WO2010021205A1 - 非水電解質二次電池及びその製造方法 - Google Patents
非水電解質二次電池及びその製造方法 Download PDFInfo
- Publication number
- WO2010021205A1 WO2010021205A1 PCT/JP2009/061849 JP2009061849W WO2010021205A1 WO 2010021205 A1 WO2010021205 A1 WO 2010021205A1 JP 2009061849 W JP2009061849 W JP 2009061849W WO 2010021205 A1 WO2010021205 A1 WO 2010021205A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- positive electrode
- solid electrolyte
- secondary battery
- layer
- electrolyte secondary
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0561—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of inorganic materials only
- H01M10/0562—Solid materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/131—Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/362—Composites
- H01M4/366—Composites as layered products
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
- H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/624—Electric conductive fillers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Definitions
- the present invention relates to a non-aqueous electrolyte secondary battery having a positive electrode, a negative electrode, and a solid electrolyte layer, and a method for producing the same.
- the present invention relates to a non-aqueous electrolyte secondary battery that can smoothly exchange lithium ions between a positive electrode and a solid electrolyte layer, that is, has an improved internal resistance.
- Non-aqueous electrolyte secondary batteries especially lithium ion secondary batteries, have a long life, high efficiency, and high capacity, and are used as power sources for mobile phones, laptop computers, digital cameras, and the like.
- a non-aqueous electrolyte secondary battery performs charge and discharge by exchanging lithium ions between a positive electrode and a negative electrode through an electrolyte layer.
- nonaqueous electrolyte secondary batteries using non-flammable inorganic solid electrolytes instead of organic solvent electrolytes have been proposed (see, for example, Patent Documents 1 to 4).
- Patent Documents 1 to 4 disclose that a sintered body produced by firing a positive electrode active material powder is used for the positive electrode.
- Non-Patent Documents 1 and 2 describe that the surface of LiCoO 2 powder is used by electrostatic spraying for the purpose of reducing the interface resistance at the interface between LiCoO 2 (positive electrode active material) and sulfide solid electrolyte. Describes forming a buffer layer of Li 4 Ti 5 O 12 or LiNbO 3 .
- a non-aqueous electrolyte secondary battery using a solid electrolyte since all the materials constituting the battery are solid, the interface between the positive electrode and the solid electrolyte layer is a bonding surface between solids.
- a positive electrode made of a sintered body is porous, when viewed microscopically, the surface roughness is rough, and numerous fine pores exist on the surface. Therefore, in the conventional non-aqueous electrolyte secondary battery, it is difficult to form a good bonding interface between the positive electrode and the solid electrolyte layer, so that the lithium ion migration resistance at the interface increases, and as a result The internal resistance of the battery increases.
- the present invention has been made in view of the above circumstances, and one of its purposes is that lithium ions can be exchanged smoothly between the positive electrode and the solid electrolyte layer, that is, the internal resistance is improved. It is to provide a nonaqueous electrolyte secondary battery.
- the nonaqueous electrolyte secondary battery of the present invention has a positive electrode, a negative electrode, and a solid electrolyte layer interposed between these positive and negative electrodes.
- a positive electrode is equipped with the positive electrode sintered compact formed by baking the powder containing a positive electrode active material, and is equipped with the coating layer containing a positive electrode active material on the surface at the side of the solid electrolyte layer of this positive electrode sintered body. .
- the non-aqueous electrolyte secondary battery manufacturing method of the present invention includes a sintering step in which a powder containing a positive electrode active material is fired to form a positive electrode sintered body, and a surface on the solid electrolyte layer side of the positive electrode sintered body. And a coating step of forming a coating layer containing a positive electrode active material using a vapor phase method.
- the coating layer is formed on the surface of the positive electrode sintered body on the solid electrolyte layer side, the conventional positive electrode using the sintered body without the coating layer formed.
- the surface of the positive electrode on the solid electrolyte layer side can have a smooth and dense surface structure. Accordingly, since a good bonding interface can be formed between the positive electrode and the solid electrolyte layer, the lithium ion migration resistance (interface resistance) at the interface is reduced. As a result, lithium ions can be exchanged smoothly between the positive electrode and the solid electrolyte layer.
- the soot coating layer is a smooth and dense layer, and has excellent surface smoothness compared to the positive electrode sintered body.
- a coating layer can be formed using a vapor phase method or the like.
- the vapor phase method include a physical vapor deposition (PVD) method such as a vacuum vapor deposition method, a sputtering method, an ion plating method, and a pulse laser deposition method, and a chemical vapor deposition (CVD) method.
- PVD physical vapor deposition
- CVD chemical vapor deposition
- the vapor phase method is considered to be most suitable, but besides the vapor phase method, a coating layer is formed by using a sol-gel method or a spin coating method. Also good.
- the surface roughness of the coating layer is preferably 0.1 ⁇ m or less in terms of Ra.
- the surface roughness mentioned here is based on the definition of arithmetic mean roughness (Ra) according to JIS B 0601: 2001.
- Positive electrode active materials constituting the positive electrode sintered body and the coating layer include lithium cobaltate (LiCoO 2 ), lithium nickelate (LiNiO 2 ), lithium manganate (LiMn 2 O 4 , LiMnO 2 ), lithium nickel manganate ( LiNi 0.5 Mn 0.5 O 2 ), nickel cobalt lithium manganate (LiNi 0.33 Co 0.33 Mn 0.33 O 2 ) and oxides such as manganese oxide (MnO 2 ), phosphate compounds such as olivine-type lithium iron phosphate (LiFePO 4 ) Alternatively, a mixture of these can be used.
- sulfur S
- sulfides such as iron sulfide (FeS), iron disulfide (FeS 2 ), lithium sulfide (Li 2 S) and titanium sulfide (TiS 2 ), or mixtures thereof Also good.
- the positive electrode sintered body and the coating layer may be composed of different types of positive electrode active materials.
- the positive electrode sintered body and the coating layer are composed of different types of positive electrode active materials, for example, the positive electrode sintered body is composed of a high capacity or low cost material, and the coating layer has a small lithium ion migration resistance.
- the positive electrode sintered body is made of LiMn 2 O 4 and the coating layer is made of LiCoO 2 can be mentioned.
- the positive electrode sintered body and the coating layer may further contain a conductive additive.
- a conductive additive carbon black such as acetylene black, natural graphite, thermally expanded graphite, carbon fiber, ruthenium oxide, titanium oxide, metal fiber such as aluminum and nickel, and the like can be used.
- the coating layer contains a compound having a layered rock salt type structure as the positive electrode active material, and the c-axis direction of the crystal of the compound is not oriented perpendicular to the surface of the positive electrode sintered body. preferable.
- the compound having a layered rock salt structure has high lithium ion mobility due to its crystal structure, and contributes to the improvement of the discharge characteristics of the battery.
- the coating layer includes a compound having a layered rock salt structure
- the c-axis direction of the crystal of the compound is not oriented perpendicularly to the surface of the positive electrode sintered body. Since the insertion and removal of lithium ions on the surface is easy, the interface resistance becomes smaller.
- the c-axis direction of the crystal is not oriented perpendicularly to the surface of the positive electrode sintered body” means that the c-axis of the crystal is inclined with respect to the surface of the positive electrode sintered body, It means that the crystal structure is oriented more strongly in the ab axis direction than in the c axis direction.
- the ratio of peak intensities as measured by X-ray diffraction (XRD) satisfies (003) / (101) ⁇ 2.
- LiCoO 2 , LiNiO 2 , or a mixture thereof having a layered rock salt structure is particularly suitable as a positive electrode active material because it can obtain a high voltage and is excellent in electron and lithium ion conductivity.
- Examples of the method for making the crystal structure of the positive electrode active material constituting the cocoon coating layer into a layered rock salt structure include a method in which the coating layer is annealed after the coating layer is formed by using the above-described vapor phase method.
- the annealing conditions are preferably 400 to 700 ° C. and 1 to 10 hours, for example.
- the thickness of the coating layer is preferably 0.02 ⁇ m or more.
- the thickness of the coating layer By setting the thickness of the coating layer to 0.02 ⁇ m or more, a coating layer having sufficient surface smoothness is formed, so that the surface of the positive electrode on the solid electrolyte layer side can be easily made a smooth and dense surface structure.
- the upper limit of the thickness of the coating layer is not particularly limited, but is preferably 10 ⁇ m or less from the viewpoint of thinning the battery and productivity.
- the solid electrolyte layer contains a sulfide-based solid electrolyte.
- the solid electrolyte constituting the solid electrolyte layer a Li-PS or Li-PSO sulfide solid electrolyte, or a Li-PO or Li-PON oxide solid electrolyte can be used.
- the sulfide-based solid electrolyte is suitable as a material constituting the solid electrolyte layer because it exhibits high lithium ion conductivity.
- Li 2 S-P 2 S 5 based solid electrolyte mainly composed of Li 2 S and P 2 S 5, Li 2 S-P 2 S 5 containing SiS 2 those -SiS 2 system, further Al 2 S 3 that of the Li 2 S-P 2 S 5 -SiS 2 -Al 2 S 3 system comprising, or P 2 O containing 5 Li 2 S-P 2 S 5 - those of P 2 O 5 systems.
- a buffer layer for reducing the interface resistance is provided between the positive electrode and the solid electrolyte layer.
- the oxide ion attracts lithium ions more strongly than the sulfide ion, so that the solid electrolyte layer at the junction interface between the positive electrode and the solid electrolyte layer.
- Lithium ions may move from the anode to the positive electrode.
- a charge depletion layer is formed in the vicinity of the interface of the solid electrolyte layer in contact with the positive electrode due to the occurrence of charge bias, and the interface resistance increases. Accordingly, the interface resistance can be further reduced by providing a buffer layer between the positive electrode and the solid electrolyte layer.
- the thickness of the buffer layer is preferably 2 nm or more in order to obtain the effect of reducing the interface resistance. From the viewpoint of thinning the battery and ensuring the mobility of lithium ions during charge / discharge, the thickness is preferably less than 1 ⁇ m. In the present invention, since the solid electrolyte layer side of the positive electrode is excellent in surface smoothness, even with such a thin buffer layer, the solid electrolyte side surface of the positive electrode can be uniformly coated. Therefore, the interface resistance can be effectively reduced.
- the thickness of the buffer layer is more preferably 5 nm or more and 50 nm or less.
- the battery of the present invention is excellent in productivity.
- the thickness of the positive electrode can be reduced.
- carbon (C) such as graphite, silicon (Si), and indium (In) are used in addition to lithium metal (Li metal simple substance) or lithium alloy (alloy composed of Li and an additive element).
- Li metal simple substance lithium metal simple substance
- lithium alloy alloy composed of Li and an additive element.
- a material containing lithium, particularly metallic lithium is preferable because it is advantageous in terms of increasing the capacity and voltage of the battery.
- an additive element of the lithium alloy aluminum (Al), silicon (Si), tin (Sn), bismuth (Bi), zinc (Zn), indium (In), or the like can be used.
- the nonaqueous electrolyte secondary battery of the present invention is provided with a coating layer on the surface of the positive electrode sintered body on the solid electrolyte side, so that the interface resistance between the positive electrode and the solid electrolyte layer is reduced. As a result, lithium ions can be exchanged smoothly between the positive electrode and the solid electrolyte layer. That is, the internal resistance of the battery can be reduced.
- a non-aqueous electrolyte secondary battery with improved internal resistance can be manufactured.
- FIG. 1 is a schematic sectional view showing an example of the nonaqueous electrolyte secondary battery of the present invention.
- the basic structure of the nonaqueous electrolyte secondary battery of the present invention is a structure in which a positive electrode 1, an electrolyte layer 3, and a negative electrode 2 are laminated in this order.
- the positive electrode 1 includes a positive electrode sintered body 10 and a coating layer 11 formed on the surface of the positive electrode sintered body 10 on the solid electrolyte layer 3 side.
- FIG. 1 shows a configuration in which a buffer layer 4 is further provided between the positive electrode 1 and the solid electrolyte layer 3.
- Example 1 A lithium ion secondary battery having a laminated structure shown in FIG. 1 was produced, and the internal resistance of the battery was evaluated by conducting a charge / discharge cycle test.
- ⁇ Battery preparation procedure> 0.5 g of LiCoO 2 powder was weighed, placed in a 20 mm diameter mold, and pressurized with a pressure of 300 MPa to obtain a pressure molded body. The pressure-molded body was placed in an electric furnace and fired at 1100 ° C. for 6 hours to produce a positive electrode sintered body 10. The surface of the positive electrode sintered body 10 was polished to a thickness of 200 ⁇ m.
- the positive electrode 1 is completed by performing an annealing treatment at 500 ° C. for 3 hours. It was. At this time, the coating layer 11 was formed by inclining the coating surface of the positive electrode sintered body 10 on which the coating layer 11 is formed by 60 ° with respect to the vapor deposition source. The thickness of the coating layer 11 was 1 ⁇ m.
- XRD X-ray diffraction
- the peak intensity ratio (003) / (101) of (003) to (101) was 1.7. Furthermore, the surface roughness Ra of the covering layer 11 was measured using a surface roughness measuring instrument (product name “DEKTAK3030” manufactured by Sloan Co.) in accordance with JIS B 0601: 2001, and was 20 nm.
- a buffer layer 4 made of LiNbO 3 was formed on the positive electrode 1 (coating layer 11) by sputtering.
- the thickness of the buffer layer 4 was 20 nm.
- a solid electrolyte layer 3 made of a Li 2 S—P 2 S 5 based solid electrolyte was formed on the buffer layer 4 using a vacuum deposition method.
- the thickness of the solid electrolyte layer 3 was 10 ⁇ m.
- a negative electrode active material layer made of Li metal was formed on the solid electrolyte layer 3 using a vacuum deposition method.
- This negative electrode active material layer was designated as negative electrode 2.
- the thickness of the negative electrode 2 was 10 ⁇ m.
- Example 2 A lithium ion secondary battery was produced in the same manner as in Example 1 except that the c-axis direction of the crystal structure of the coating layer 11 was oriented perpendicularly to the surface of the positive electrode sintered body 10. At this time, the coating layer 11 was formed by making the coating surface of the positive electrode sintered body 10 on which the coating layer 11 is formed face the vapor deposition source. Further, the peak intensity ratio (003) / (101) of the coating layer 11 was 2.8. The surface roughness of the coating layer 11 was 20 nm in Ra.
- Example 1 A lithium ion secondary battery was produced in the same manner as in Example 1 except that the formation of the coating layer 11 and the annealing treatment were not performed. At this time, the surface roughness of the positive electrode 1 (positive electrode sintered body 10) was 310 nm in Ra. The surface roughness is a value measured after the surface of the positive electrode sintered body 10 is polished.
- the batteries of Examples 1 and 2 180Omucm 2 internal resistance value, respectively, is 620Omucm 2, were both low resistance.
- the battery of Comparative Example 1 had a high resistance with an internal resistance value of 28000 ⁇ cm 2 .
- the nonaqueous electrolyte secondary battery of the present invention is provided with the coating layer 11 having excellent smoothness on the surface of the solid electrolyte layer 3 side of the positive electrode sintered body 10, whereby the positive electrode 1 and the solid electrolyte layer 3 are provided.
- the internal resistance can be reduced because the interfacial resistance is reduced and, as a result, lithium ions move smoothly.
- the interface resistance is smaller when the c-axis direction of the crystal of the coating layer 11 is not oriented perpendicularly to the surface of the positive electrode sintered body 10, and as a result, the internal resistance can be further reduced.
- Example 3 Each battery was fabricated in the same manner as in Example 1 except that the thickness of the covering layer 11 was changed. The internal resistance value of each battery was calculated by performing a charge / discharge cycle test under the same conditions as above for each obtained battery. The results are shown in Table 1.
- the thickness of the coating layer is preferably 0.02 ⁇ m or more and 3.0 ⁇ m or less.
- the present invention is not limited to the above-described embodiment, and can be modified as appropriate without departing from the gist of the present invention.
- the thickness of the coating layer may be changed as appropriate, or a material other than LiCoO 2 may be used as the positive electrode active material.
- the non-aqueous electrolyte secondary battery of the present invention can be suitably used for a power source of an electric vehicle, in addition to a mobile phone, a notebook computer, a digital camera.
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Composite Materials (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
Description
図1に示す積層構造のリチウムイオン二次電池を作製して、充放電サイクル試験を行うことにより電池の内部抵抗を評価した。
LiCoO2の粉末0.5gを秤量し、直径20mmの金型に入れ、300MPaの圧力で加圧して加圧成形体を得た。この加圧成形体を、電気炉に入れ、1100℃で6時間焼成することで正極焼結体10を作製した。この正極焼結体10の表面を研磨し、厚みを200μmとした。
被覆層11の結晶構造のc軸方向を正極焼結体10の表面に対して垂直に配向させた以外は、実施例1と同様にして、リチウムイオン二次電池を作製した。このとき、被覆層11の形成は、被覆層11が形成される正極焼結体10の被覆面を蒸着源に対向させることにより行った。また、被覆層11のピーク強度比(003)/(101)は2.8であった。被覆層11の表面粗さはRaで20nmであった。
被覆層11の形成及びアニール処理を行わなかった以外は、実施例1と同様にして、リチウムイオン二次電池を作製した。このとき、正極1(正極焼結体10)の表面粗さはRaで310nmであった。なお、この表面粗さは、正極焼結体10の表面を研磨した後に測定した値である。
実施例1、2及び比較例1の各電池について、カットオフ電圧:3V~4.2V、電流密度:0.05mA/cm2の条件で充放電サイクル試験を実施した。放電開始後60秒間の電圧降下を測定することにより電池の内部抵抗値を算出した。
被覆層11の厚みを変えた以外は実施例1と同様にして各電池を作製した。得られた各電池について上記と同じ条件の充放電サイクル試験を実施することにより、各電池の内部抵抗値を算出した。その結果を表1に示す。
2 負極
3 固体電解質層
4 緩衝層
Claims (8)
- 正極、負極、及びこれら正負極間に介在される固体電解質層を有する非水電解質二次電池であって、
前記正極は、正極活物質を含む粉末を焼成してなる正極焼結体を備え、この正極焼結体の固体電解質層側の表面に正極活物質を含む被覆層を備えることを特徴とする非水電解質二次電池。 - 前記被覆層が、層状岩塩型構造の化合物を含み、該化合物の結晶のc軸方向が、上記正極焼結体の表面に対して垂直に配向していないことを特徴とする請求項1に記載の非水電解質二次電池。
- 前記被覆層の厚みが、0.02μm以上であることを特徴とする請求項1又は2に記載の非水電解質二次電池。
- 前記化合物が、コバルト酸リチウム、ニッケル酸リチウム、又はこれらの混合物であることを特徴とする請求項2又は3に記載の非水電解質二次電池。
- 前記固体電解質層が、硫化物系固体電解質を含むことを特徴とする請求項1~4のいずれか一項に記載の非水電解質二次電池。
- 前記正極と前記固体電解質層との間に界面抵抗を低減するための緩衝層が設けられていることを特徴とする請求項1~5のいずれか一項に記載の非水電解質二次電池。
- 正極と負極、及びこれら正負極間に介在される固体電解質層を有する非水電解質二次電池の製造方法であって、
正極活物質を含む粉末を焼成して正極焼結体を形成する焼結工程と、
前記正極焼結体の固体電解質層側の表面に気相法を用いて正極活物質を含む被覆層を形成する被覆工程と、
を含むことを特徴とする非水電解質二次電池の製造方法。 - 前記被覆層をアニール処理することを特徴とする請求項7に記載の非水電解質二次電池の製造方法。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200980100740XA CN101828295B (zh) | 2008-08-18 | 2009-06-29 | 非水电解质二次电池及其制造方法 |
US12/743,287 US20100279176A1 (en) | 2008-08-18 | 2009-06-29 | Nonaqueous electrolyte secondary battery and method for producing the same |
EP09808141.7A EP2315298A4 (en) | 2008-08-18 | 2009-06-29 | RECHARGEABLE BATTERY WITH NONAQUEOUS ELECTROLYTE AND METHOD FOR MANUFACTURING THE RECHARGEABLE BATTERY |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008210131 | 2008-08-18 | ||
JP2008-210131 | 2008-08-18 | ||
JP2009-105601 | 2009-04-23 | ||
JP2009105601 | 2009-04-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010021205A1 true WO2010021205A1 (ja) | 2010-02-25 |
Family
ID=41707084
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2009/061849 WO2010021205A1 (ja) | 2008-08-18 | 2009-06-29 | 非水電解質二次電池及びその製造方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20100279176A1 (ja) |
EP (1) | EP2315298A4 (ja) |
JP (1) | JP2010272494A (ja) |
KR (1) | KR20100057678A (ja) |
CN (1) | CN101828295B (ja) |
WO (1) | WO2010021205A1 (ja) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120121978A1 (en) * | 2010-11-17 | 2012-05-17 | Ngk Insulators, Ltd. | Lithium secondary battery cathode |
CN103534863A (zh) * | 2011-05-18 | 2014-01-22 | 丰田自动车株式会社 | 制备固体硫化物电解质材料的方法及固体硫化物电解质材料 |
JP2015028854A (ja) * | 2013-07-30 | 2015-02-12 | 日本特殊陶業株式会社 | 全固体電池 |
US9356279B2 (en) | 2012-08-03 | 2016-05-31 | Toyota Jidosha Kabushiki Kaisha | Electrode body, method for producing electrode body, and battery provided with electrode body |
CN112635815A (zh) * | 2019-10-09 | 2021-04-09 | 中国科学院宁波材料技术与工程研究所 | 一种具有电化学缓冲层的复合电解质材料、其制备方法及锂金属电池 |
WO2024190265A1 (ja) * | 2023-03-10 | 2024-09-19 | 国立大学法人東北大学 | 全固体セルにおける固体電解質の配置構造および電池 |
Families Citing this family (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103250278B (zh) * | 2010-12-10 | 2015-07-01 | 丰田自动车株式会社 | 电极体和全固体电池 |
JP5556797B2 (ja) * | 2010-12-17 | 2014-07-23 | トヨタ自動車株式会社 | 二次電池 |
KR101440886B1 (ko) | 2011-06-22 | 2014-09-18 | 삼성에스디아이 주식회사 | 고체 전해질, 그 제조방법 및 이를 채용한 리튬 전지 |
JP5141805B1 (ja) * | 2011-08-02 | 2013-02-13 | トヨタ自動車株式会社 | 固体二次電池、および電池システム |
JP6016597B2 (ja) * | 2011-12-16 | 2016-10-26 | 株式会社半導体エネルギー研究所 | リチウムイオン二次電池用正極の製造方法 |
JP5943624B2 (ja) * | 2012-02-10 | 2016-07-05 | 日立造船株式会社 | 被覆正極活物質、および該被覆正極活物質を用いてなる全固体リチウム二次電池 |
EP2811570B1 (en) * | 2012-04-17 | 2016-09-14 | LG Chem, Ltd. | Lithium secondary battery exhibiting excellent performance |
KR101502832B1 (ko) * | 2012-04-17 | 2015-03-17 | 주식회사 엘지화학 | 성능이 우수한 리튬 이차전지 |
JP5846307B2 (ja) | 2012-06-28 | 2016-01-20 | 株式会社村田製作所 | 全固体電池 |
WO2014002857A1 (ja) * | 2012-06-29 | 2014-01-03 | 株式会社 村田製作所 | 全固体電池 |
JP6109672B2 (ja) * | 2012-11-07 | 2017-04-05 | 日本碍子株式会社 | セラミック正極−固体電解質複合体 |
JP6168690B2 (ja) * | 2012-11-07 | 2017-07-26 | 日本碍子株式会社 | セラミック正極−固体電解質複合体 |
US9761861B1 (en) | 2013-06-25 | 2017-09-12 | Quantumscape Corporation | Pulse plating of lithium material in electrochemical devices |
US9692041B2 (en) | 2013-10-02 | 2017-06-27 | Samsung Electronics Co., Ltd. | Lithium battery and method of preparing cathode active material for the lithium battery |
JP6340955B2 (ja) * | 2014-07-01 | 2018-06-13 | 株式会社豊田中央研究所 | 複合積層体の製造方法、複合積層体及びリチウム電池 |
US10116003B2 (en) | 2015-02-03 | 2018-10-30 | Quantumscape Corporation | Metal sulfide anolytes for electrochemical cells |
JP6565207B2 (ja) * | 2015-02-20 | 2019-08-28 | 富士通株式会社 | 全固体電池 |
KR102435473B1 (ko) | 2015-08-04 | 2022-08-23 | 삼성전자주식회사 | 다결정 소결체를 갖는 이차전지 양극, 상기 이차전지 양극을 포함하는 이차전지, 및 상기 이차전지 양극을 제조하는 방법 |
JP6264350B2 (ja) * | 2015-09-24 | 2018-01-24 | トヨタ自動車株式会社 | 電極積層体及び全固体電池の製造方法 |
JPWO2017065034A1 (ja) * | 2015-10-15 | 2018-08-02 | 日本碍子株式会社 | 全固体リチウム電池の製造方法 |
JP6730584B2 (ja) * | 2016-02-19 | 2020-07-29 | 富士通株式会社 | 全固体電池、及び全固体電池の製造方法 |
CN109643824A (zh) * | 2016-06-28 | 2019-04-16 | 加利福尼亚大学董事会 | 具有钼硫化物电极的蓄电池和方法 |
DE102016015191B3 (de) | 2016-12-21 | 2018-06-14 | Forschungszentrum Jülich GmbH | Lithium- lonen- Festkörperakkumulator sowie Verfahren zur Herstellung desselben |
WO2018165606A1 (en) | 2017-03-10 | 2018-09-13 | Quantumscape Corporation | Metal negative electrode ultrasonic charging |
CN109935796A (zh) * | 2017-12-19 | 2019-06-25 | 成都亦道科技合伙企业(有限合伙) | 一种全氧化物固态锂电池结构及其制备方法 |
JP7269020B2 (ja) * | 2019-01-31 | 2023-05-08 | 株式会社日本マイクロニクス | 二次電池 |
CN110416637B (zh) * | 2019-06-28 | 2022-08-12 | 上海空间电源研究所 | 一种固态电池缓冲层的制备方法及其应用 |
WO2021038860A1 (ja) * | 2019-08-30 | 2021-03-04 | 株式会社 東芝 | 電極、積層体及び二次電池 |
CN117096425A (zh) * | 2020-05-12 | 2023-11-21 | 苹果公司 | 固态锂电池的正极 |
CN113140784A (zh) * | 2021-04-20 | 2021-07-20 | 惠州亿纬锂能股份有限公司 | 一种改性固态电解质及其制备方法和应用 |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000164217A (ja) | 1998-11-27 | 2000-06-16 | Kyocera Corp | リチウム電池 |
JP2001126758A (ja) * | 1999-10-28 | 2001-05-11 | Kyocera Corp | リチウム電池 |
JP2003346901A (ja) * | 2002-05-30 | 2003-12-05 | Ohara Inc | リチウムイオン二次電池 |
JP2007005279A (ja) | 2004-12-13 | 2007-01-11 | Matsushita Electric Ind Co Ltd | 活物質層と固体電解質層とを含む積層体およびこれを用いた全固体リチウム二次電池 |
WO2007066539A1 (ja) * | 2005-12-09 | 2007-06-14 | Idemitsu Kosan Co., Ltd. | リチウムイオン伝導性硫化物系固体電解質及びそれを用いた全固体リチウム電池 |
JP2007258165A (ja) | 2006-02-24 | 2007-10-04 | Ngk Insulators Ltd | 全固体電池 |
JP2007258148A (ja) | 2006-02-24 | 2007-10-04 | Ngk Insulators Ltd | 全固体電池 |
JP2007329107A (ja) * | 2006-06-09 | 2007-12-20 | Arisawa Mfg Co Ltd | リチウムイオン二次電池 |
WO2008059987A1 (en) * | 2006-11-14 | 2008-05-22 | Ngk Insulators, Ltd. | Solid electrolyte structure for all-solid-state battery, all-solid-state battery, and their production methods |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6402795B1 (en) * | 1998-02-18 | 2002-06-11 | Polyplus Battery Company, Inc. | Plating metal negative electrodes under protective coatings |
JP4174816B2 (ja) * | 2001-02-28 | 2008-11-05 | 住友電気工業株式会社 | 無機固体電解質およびリチウム電池部材 |
WO2005101549A1 (ja) * | 2004-04-01 | 2005-10-27 | Sumitomo Electric Industries Ltd. | リチウム二次電池負極部材、及びその製造方法 |
-
2009
- 2009-05-26 JP JP2009126039A patent/JP2010272494A/ja active Pending
- 2009-06-29 CN CN200980100740XA patent/CN101828295B/zh not_active Expired - Fee Related
- 2009-06-29 KR KR1020107007561A patent/KR20100057678A/ko not_active Application Discontinuation
- 2009-06-29 US US12/743,287 patent/US20100279176A1/en not_active Abandoned
- 2009-06-29 EP EP09808141.7A patent/EP2315298A4/en not_active Withdrawn
- 2009-06-29 WO PCT/JP2009/061849 patent/WO2010021205A1/ja active Application Filing
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000164217A (ja) | 1998-11-27 | 2000-06-16 | Kyocera Corp | リチウム電池 |
JP2001126758A (ja) * | 1999-10-28 | 2001-05-11 | Kyocera Corp | リチウム電池 |
JP2003346901A (ja) * | 2002-05-30 | 2003-12-05 | Ohara Inc | リチウムイオン二次電池 |
JP2007005279A (ja) | 2004-12-13 | 2007-01-11 | Matsushita Electric Ind Co Ltd | 活物質層と固体電解質層とを含む積層体およびこれを用いた全固体リチウム二次電池 |
WO2007066539A1 (ja) * | 2005-12-09 | 2007-06-14 | Idemitsu Kosan Co., Ltd. | リチウムイオン伝導性硫化物系固体電解質及びそれを用いた全固体リチウム電池 |
JP2007258165A (ja) | 2006-02-24 | 2007-10-04 | Ngk Insulators Ltd | 全固体電池 |
JP2007258148A (ja) | 2006-02-24 | 2007-10-04 | Ngk Insulators Ltd | 全固体電池 |
JP2007329107A (ja) * | 2006-06-09 | 2007-12-20 | Arisawa Mfg Co Ltd | リチウムイオン二次電池 |
WO2008059987A1 (en) * | 2006-11-14 | 2008-05-22 | Ngk Insulators, Ltd. | Solid electrolyte structure for all-solid-state battery, all-solid-state battery, and their production methods |
Non-Patent Citations (2)
Title |
---|
ADVANCED MATERIALS, vol. 18, 2006, pages 2226 |
See also references of EP2315298A4 |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120121978A1 (en) * | 2010-11-17 | 2012-05-17 | Ngk Insulators, Ltd. | Lithium secondary battery cathode |
US8628881B2 (en) * | 2010-11-17 | 2014-01-14 | Ngk Insulators, Ltd. | Lithium secondary battery cathode |
CN103534863A (zh) * | 2011-05-18 | 2014-01-22 | 丰田自动车株式会社 | 制备固体硫化物电解质材料的方法及固体硫化物电解质材料 |
US9356279B2 (en) | 2012-08-03 | 2016-05-31 | Toyota Jidosha Kabushiki Kaisha | Electrode body, method for producing electrode body, and battery provided with electrode body |
JP2015028854A (ja) * | 2013-07-30 | 2015-02-12 | 日本特殊陶業株式会社 | 全固体電池 |
CN112635815A (zh) * | 2019-10-09 | 2021-04-09 | 中国科学院宁波材料技术与工程研究所 | 一种具有电化学缓冲层的复合电解质材料、其制备方法及锂金属电池 |
WO2024190265A1 (ja) * | 2023-03-10 | 2024-09-19 | 国立大学法人東北大学 | 全固体セルにおける固体電解質の配置構造および電池 |
Also Published As
Publication number | Publication date |
---|---|
EP2315298A4 (en) | 2014-04-02 |
CN101828295B (zh) | 2013-07-03 |
CN101828295A (zh) | 2010-09-08 |
KR20100057678A (ko) | 2010-05-31 |
JP2010272494A (ja) | 2010-12-02 |
US20100279176A1 (en) | 2010-11-04 |
EP2315298A1 (en) | 2011-04-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2010021205A1 (ja) | 非水電解質二次電池及びその製造方法 | |
US10985407B2 (en) | All-solid-state secondary battery including anode active material alloyable with lithium and method of charging the same | |
CN111864207B (zh) | 全固体电池 | |
KR101714882B1 (ko) | 리튬 고체 이차 전지 및 그 제조 방법 | |
WO2011145462A1 (ja) | 非水電解質電池用正極体及びその製造方法、並びに非水電解質電池 | |
JP5348607B2 (ja) | 全固体リチウム二次電池 | |
JP5623360B2 (ja) | 全固体電池 | |
JP6362371B2 (ja) | 酸化物系固体電解質及びその用途 | |
WO2012077225A1 (ja) | 電極体および全固体電池 | |
JP6102859B2 (ja) | リチウム電池用正極活物質、リチウム電池およびリチウム電池用正極活物質の製造方法 | |
JP2011096630A (ja) | 固体リチウム二次電池及びその製造方法 | |
WO2012099178A1 (ja) | 非水電解質電池 | |
JP5682318B2 (ja) | 全固体電池 | |
JP2011044368A (ja) | 非水電解質電池 | |
US11374257B2 (en) | Softened solid-state electrolytes for lithium ion batteries | |
CN112868122A (zh) | 具有改进的化学稳定性的固体电解质材料 | |
JP6748348B2 (ja) | 全固体電池 | |
JP2013089417A (ja) | 非水電解質電池 | |
KR20180082902A (ko) | 리튬 메탈 표면의 불화리튬의 증착 및 이를 이용한 리튬 이차전지 | |
JP2021034199A (ja) | 全固体電池 | |
JP2017147205A (ja) | 全固体電池 | |
JP2015072816A (ja) | 全固体二次電池の容量向上方法及び容量が向上した全固体二次電池 | |
JP7017137B2 (ja) | 全固体二次電池の製造方法 | |
JP5556252B2 (ja) | 非水電解質二次電池および非水電解質二次電池用電極 | |
JP2015115103A (ja) | 全固体電池用の電極の製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200980100740.X Country of ref document: CN |
|
ENP | Entry into the national phase |
Ref document number: 20107007561 Country of ref document: KR Kind code of ref document: A |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 09808141 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2009808141 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 12743287 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |