CN102403537A - Method for manufacturing lithium iron phosphate battery - Google Patents
Method for manufacturing lithium iron phosphate battery Download PDFInfo
- Publication number
- CN102403537A CN102403537A CN2011103889682A CN201110388968A CN102403537A CN 102403537 A CN102403537 A CN 102403537A CN 2011103889682 A CN2011103889682 A CN 2011103889682A CN 201110388968 A CN201110388968 A CN 201110388968A CN 102403537 A CN102403537 A CN 102403537A
- Authority
- CN
- China
- Prior art keywords
- specific area
- lithium iron
- iron phosphate
- slurry
- carbon
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 title abstract 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 14
- 239000000843 powder Substances 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 11
- 229910021389 graphene Inorganic materials 0.000 claims description 10
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- 239000003575 carbonaceous material Substances 0.000 claims description 5
- 229910001386 lithium phosphate Inorganic materials 0.000 claims description 4
- LLYXJBROWQDVMI-UHFFFAOYSA-N 2-chloro-4-nitrotoluene Chemical compound CC1=CC=C([N+]([O-])=O)C=C1Cl LLYXJBROWQDVMI-UHFFFAOYSA-N 0.000 claims description 2
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 2
- 239000004917 carbon fiber Substances 0.000 claims description 2
- 239000002002 slurry Substances 0.000 abstract description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 7
- 239000011889 copper foil Substances 0.000 abstract description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 1
- 229910052782 aluminium Inorganic materials 0.000 abstract 1
- 239000011888 foil Substances 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 210000004027 cell Anatomy 0.000 description 20
- 239000005955 Ferric phosphate Substances 0.000 description 18
- 229940032958 ferric phosphate Drugs 0.000 description 18
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 18
- 229910000399 iron(III) phosphate Inorganic materials 0.000 description 18
- 229910052744 lithium Inorganic materials 0.000 description 18
- 238000007599 discharging Methods 0.000 description 12
- 229910052493 LiFePO4 Inorganic materials 0.000 description 8
- 239000012530 fluid Substances 0.000 description 7
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 239000005030 aluminium foil Substances 0.000 description 6
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 5
- ZSYNKHJUSDFTCQ-UHFFFAOYSA-N [Li].[Fe].P(O)(O)(O)=O Chemical compound [Li].[Fe].P(O)(O)(O)=O ZSYNKHJUSDFTCQ-UHFFFAOYSA-N 0.000 description 5
- 229910001416 lithium ion Inorganic materials 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910010707 LiFePO 4 Inorganic materials 0.000 description 1
- 239000006256 anode slurry Substances 0.000 description 1
- 239000006257 cathode slurry Substances 0.000 description 1
- 230000022131 cell cycle Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 210000001787 dendrite Anatomy 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention provides a method for manufacturing lithium iron phosphate batteries, which is characterized in that carbon elements with high specific surface area are added when mixing positive and negative electrodes, wherein the proportion of the carbon elements to the total powder weight of the electrodes is 1-15%, the carbon elements are stirred and mixed to prepare slurry, the slurry is respectively coated on an aluminum foil and a copper foil, and the lithium iron phosphate batteries are prepared by tabletting, assembling, injecting liquid, forming and sealing.
Description
Technical field
The present invention relates to the lithium ion battery production method, particularly a kind of manufacture method of ion-lithium phosphate battery with excellent fast charging and discharging performance, long circulation life.
Background technology
Environmental pollution, shortage of resources, oil crisis etc. force human cleaning, the regenerative resource used.Replace oil with electricity on the one hand, reduce municipal pollution, the development electric motor car is the task of top priority; The development and utilization new forms of energy are regulated the electrical network electricity using at the peak time on the other hand, effectively store and utilize the low ebb electric weight, and secondary cell especially large capacity version secondary cell then becomes electric motor car and the key that stores the valley electricity technology.
Lithium ion battery with monomer whose operating voltage height, high-energy-density density, have extended cycle life, advantages such as self-discharge rate is little, memory-less effect, environmental protection.Especially positive electrode uses the lithium ion battery of LiFePO4 (LiFePO4) made; Advantage such as good with its stability of material, that security performance is good, cost is low, have extended cycle life; Be more suitable for being made into great-capacity power battery, to be used in electric motor car and to store the valley electricity aspect.
Because the shortcoming of LiFePO4 (LiFePO4) material self, lithium ion is lower in LiFePO4 (LiFePO4) material granule diffusion inside speed, and the electron conduction of material is also relatively poor.Though now people adopt to the shortcoming of LiFePO 4 material mix, the surface coats, reduce method such as material particle size handles; But in the present ferric phosphate lithium cell manufacturing process; The most specific area of carbon substance conductance agent that is added during the both positive and negative polarity batch mixing is lower; Therefore, present ferric phosphate lithium cell is when the electrokinetic cell, and the performances such as cycle life when its cryogenic property, fast charging and discharging performance, fast charging and discharging still are difficult to the level that reaches higher.
Summary of the invention
The object of the present invention is to provide a kind of manufacture method of ferric phosphate lithium cell of the long circulation life with excellent fast charging and discharging performance.
Technical scheme of the present invention relates to the mixing of materials when anode and cathode slurry prepares in the ferric phosphate lithium cell making; By existing technological preparation both positive and negative polarity material, its improvements add total powder weight 1.0%～15% when being the both positive and negative polarity mixing of materials specific area is the carbon material of 80～5000 ㎡/g.
The above-mentioned high specific area carbon elemental substance that adds is the mixture of a kind of or several kinds of arbitrary proportions in active carbon, CNT, carbon fiber, Graphene, the conductive carbon black.
The present invention is when the both positive and negative polarity batch mixing; The carbon material that all adds high-specific surface area; Process slurry through mixing; Slurry is coated in respectively on aluminium foil and the Copper Foil, passes through compressing tablet, film-making, assembling, fluid injection then, change into, seal, promptly process the ferric phosphate lithium cell of long circulation life with excellent fast charging and discharging performance.Compressing tablet, film-making, assembling, fluid injection, the normal ferric phosphate lithium cell manufacture craft of process using such as change into, seal.
The present invention adds the latter made ferric phosphate lithium cell of high specific area carbon material and compares with common ferric phosphate lithium cell and have following two advantages in the both positive and negative polarity material:
(1) has excellent fast charging and discharging performance;
The carbon element material that adds high-specific surface area; To increase LiFePO4 (LiFePO4) positive electrode and the particle of negative material and the contact area of high surface area carbon elemental substance; Thereby strengthen the conductivity that is made into pole piece, make ferric phosphate lithium cell can realize the fast charging and discharging performance of 3C～20C.
(2) cycle life of ferric phosphate lithium cell in the time of can significantly improving fast charging and discharging.
The carbon element material that adds high-specific surface area; Strengthened the conductivity that is made into pole piece; Lithium ion reduces the possibility that Li dendrite forms in the pole piece surface time of staying when shortening fast charging and discharging, thereby improves the cycle life of ferric phosphate lithium cell when fast charging and discharging.
Embodiment
Instance 1: making can be carried out the long-life ferric phosphate lithium cell of 3～5 rate charge-discharges circulation.
When anodal batch mixing, add total powder (press common process and prepare, down together), 1% specific area of weight is 250m
2The CNT of/g and 2% specific area are 360m
2The mixture of/g Graphene; 1% specific area that when the negative pole batch mixing, adds total powder weight is 250m
2/ g CNT and 1.5% specific area are 100m
2The mixture of/g conductive carbon black; Process slurry through mixing, slurry is coated in respectively on aluminium foil and the Copper Foil, pass through conventional compressing tablet, film-making, assembling, fluid injection then, change into, seal promptly to process and to carry out 3～5 rate charge-discharge recycled phosphoric acid lithium iron batteries.Battery circulates after 2000 times when carrying out 3 rate charge-discharge loop tests, and the discharge capacity of battery still remains on more than 90% of initial capacity.
Instance 2: making can be carried out the long-life ferric phosphate lithium cell of 7～10 rate charge-discharges circulation.
3% specific area that when anodal batch mixing, adds total powder weight is 4000m
2The active carbon of/g and 2% specific area are 360m
2The mixture of/g Graphene; 1.5% specific area that when the negative pole batch mixing, adds total powder weight is 360m
2/ g Graphene and 2% specific area are 100m
2The mixture of/g conductive carbon black; Process slurry through mixing, slurry is coated in respectively on aluminium foil and the Copper Foil, pass through conventional compressing tablet, film-making, assembling, fluid injection then, change into, seal promptly to process and to carry out 7～10 rate charge-discharge recycled phosphoric acid lithium iron batteries.Battery circulates after 3000 times when carrying out 8 rate charge-discharge loop tests, and the discharge capacity of battery still remains on more than 88% of initial capacity.
Instance 3: making can be carried out the long-life ferric phosphate lithium cell of 13～15 rate charge-discharges circulation.
6% specific area that when anodal batch mixing, adds total powder weight is 4000m
2The active carbon of/g and 3% specific area are 360m
2The mixture of/g Graphene; 2.5% specific area that when the negative pole batch mixing, adds total powder weight is 360m
2/ g Graphene and 4% specific area are 250m
2The mixture of the CNT of/g; Process slurry through mixing, slurry is coated in respectively on aluminium foil and the Copper Foil, pass through conventional compressing tablet, film-making, assembling, fluid injection then, change into, seal promptly to process and to carry out 13～15 rate charge-discharge recycled phosphoric acid lithium iron batteries.Battery circulates after 3500 times when carrying out 13 rate charge-discharge loop tests, and the discharge capacity of battery still remains on more than 88% of initial capacity.
Instance 4: making can be carried out the long-life ferric phosphate lithium cell of 20～25 rate charge-discharges circulation.
10% specific area that when anodal batch mixing, adds total powder weight is 4000m
2The active carbon of/g and 5% specific area are 360m
2The mixture of/g Graphene; 3.5% specific area that when the negative pole batch mixing, adds total powder weight is 360m
2/ g Graphene and 6% specific area are 250m
2The mixture of the CNT of/g; Process slurry through mixing, slurry is coated in respectively on aluminium foil and the Copper Foil, pass through conventional compressing tablet, film-making, assembling, fluid injection then, change into, seal promptly to process and to carry out 13～15 rate charge-discharge recycled phosphoric acid lithium iron batteries.Battery circulates after 5000 times when carrying out 25 rate charge-discharge loop tests, and the discharge capacity of battery still remains on more than 91% of initial capacity.
Instance 5: making can be carried out the long-life ferric phosphate lithium cell of 15～25 rate charge-discharges circulation.
15% specific area that when anodal batch mixing, adds total powder weight is 360m
2/ g Graphene; 8% specific area that when the negative pole batch mixing, adds total powder weight is 3500m
2The active carbon of/g; Process slurry through mixing, slurry is coated in respectively on aluminium foil and the Copper Foil, pass through conventional compressing tablet, film-making, assembling, fluid injection then, change into, seal promptly to process and to carry out 15～25 rate charge-discharge recycled phosphoric acid lithium iron batteries.Battery circulates after 5000 times when carrying out 20 rate charge-discharge loop tests, and the discharge capacity of battery still remains on more than 90% of initial capacity.
The ferric phosphate lithium cell that a large amount of experiment proofs adopts the inventive method to process has excellent fast charging and discharging performance, and the cycle life of battery is also well a lot of than the ferric phosphate lithium cell cycle life that conventional method is made during fast charging and discharging.
Claims (2)
1. a manufacture method of ion-lithium phosphate battery comprises the both positive and negative polarity mixing of materials, and the specific area that adds total powder weight 1.0%～15% when it is characterized in that the both positive and negative polarity mixing of materials is the carbon material of 80～5000 ㎡/g.
2. by the described manufacture method of ion-lithium phosphate battery of claim 1, it is characterized in that said carbon material is the mixture of one or more arbitrary proportions in active carbon, CNT, carbon fiber, Graphene, the conductive carbon black.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103889682A CN102403537A (en) | 2011-11-30 | 2011-11-30 | Method for manufacturing lithium iron phosphate battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103889682A CN102403537A (en) | 2011-11-30 | 2011-11-30 | Method for manufacturing lithium iron phosphate battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102403537A true CN102403537A (en) | 2012-04-04 |
Family
ID=45885502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103889682A Pending CN102403537A (en) | 2011-11-30 | 2011-11-30 | Method for manufacturing lithium iron phosphate battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102403537A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050292A (en) * | 2012-12-20 | 2013-04-17 | 上海奥威科技开发有限公司 | High-power double-electric layer capacitor |
| CN106058252A (en) * | 2016-08-17 | 2016-10-26 | 江苏金坛绿能新能源科技有限公司 | Lithium ion battery cathode slurry and preparation method thereof |
| CN107256966A (en) * | 2017-05-17 | 2017-10-17 | 常州第六元素材料科技股份有限公司 | A kind of anode slice of lithium ion battery and preparation method thereof, lithium ion battery anode glue size and its method |
| RU2674167C2 (en) * | 2014-12-23 | 2018-12-05 | Нр Электрик Ко., Лтд. | Method of switching passive section to connection to power system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060166093A1 (en) * | 2002-11-13 | 2006-07-27 | Hydro-Quebec | Electrode coated with a film obtained from an aqueous solution comprising a water-soluble binder, production method thereof and uses of same |
| CN101207204A (en) * | 2006-12-22 | 2008-06-25 | 比亚迪股份有限公司 | Lithium ion battery anode material and lithium ion battery and anode containing the material |
| CN101510625A (en) * | 2009-03-26 | 2009-08-19 | 西安瑟福能源科技有限公司 | Ultra-high magnification lithium ion battery |
| JP2009295465A (en) * | 2008-06-06 | 2009-12-17 | Iwate Univ | Positive electrode active material for lithium secondary battery and manufacturing method |
-
2011
- 2011-11-30 CN CN2011103889682A patent/CN102403537A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060166093A1 (en) * | 2002-11-13 | 2006-07-27 | Hydro-Quebec | Electrode coated with a film obtained from an aqueous solution comprising a water-soluble binder, production method thereof and uses of same |
| CN101207204A (en) * | 2006-12-22 | 2008-06-25 | 比亚迪股份有限公司 | Lithium ion battery anode material and lithium ion battery and anode containing the material |
| JP2009295465A (en) * | 2008-06-06 | 2009-12-17 | Iwate Univ | Positive electrode active material for lithium secondary battery and manufacturing method |
| CN101510625A (en) * | 2009-03-26 | 2009-08-19 | 西安瑟福能源科技有限公司 | Ultra-high magnification lithium ion battery |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050292A (en) * | 2012-12-20 | 2013-04-17 | 上海奥威科技开发有限公司 | High-power double-electric layer capacitor |
| RU2674167C2 (en) * | 2014-12-23 | 2018-12-05 | Нр Электрик Ко., Лтд. | Method of switching passive section to connection to power system |
| CN106058252A (en) * | 2016-08-17 | 2016-10-26 | 江苏金坛绿能新能源科技有限公司 | Lithium ion battery cathode slurry and preparation method thereof |
| CN107256966A (en) * | 2017-05-17 | 2017-10-17 | 常州第六元素材料科技股份有限公司 | A kind of anode slice of lithium ion battery and preparation method thereof, lithium ion battery anode glue size and its method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104779394A (en) | Aqueous lithium (sodium) ion battery mixed negative material | |
| CN102969548B (en) | A kind of lithium-ion energy storage device and preparation method thereof | |
| Wang et al. | Enhancing cycle performance of lead-carbon battery anodes by lead-doped porous carbon composite and graphite additives | |
| CN106129455A (en) | Lithium-sulfur cell | |
| CN104600315A (en) | Flake MoS2/graphene composite aerogel and preparation method thereof | |
| CN102280656A (en) | Preparation method of lithium ion battery with positive electrode covered by conductive polymer | |
| CN101221853A (en) | Semi-solid state or full-solid state water system super capacitor | |
| CN102768901A (en) | Long-life capacitance battery | |
| CN202308155U (en) | High-security capacitor battery | |
| CN101764263A (en) | Super lead carbon battery with active carbon negative electrode and preparation method thereof | |
| CN101197442A (en) | Lithium iron phosphate lithium ion battery | |
| US20240063361A1 (en) | Negative electrode, preparation method therefor, and application thereof | |
| CN101567469A (en) | Power polymer lithium ion battery and fabricating process thereof | |
| CN106384855A (en) | Recovery method of waste lithium iron phosphate positive electrode material | |
| CN106654154A (en) | Water-based ion battery plate manufacturing process | |
| CN106025194A (en) | Black-phosphorus-based composite negative electrode material and preparing method thereof | |
| CN101262056A (en) | A water solution chargeable lithium ion battery | |
| CN102263280A (en) | Flow aqueous chargeable alkali metal ion battery | |
| CN105742695A (en) | Lithium-ion battery and preparation method thereof | |
| CN108172744B (en) | Sb for lithium-sulfur battery diaphragm2Se3Method for preparing composite material | |
| CN212907803U (en) | Lithium ion battery with high-rate charge and discharge | |
| CN101262076A (en) | A water solution chargeable lithium battery | |
| CN102403537A (en) | Method for manufacturing lithium iron phosphate battery | |
| CN102290566B (en) | Lithium battery anode preparing method and lithium battery | |
| CN101894686A (en) | Super capacitor battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120404 |