KR101285171B1 - 리튬티탄산화물 제조방법, 이에 의하여 제조된 리튬티탄산화물 및 이를 포함하는 리튬 이차전지 - Google Patents
리튬티탄산화물 제조방법, 이에 의하여 제조된 리튬티탄산화물 및 이를 포함하는 리튬 이차전지 Download PDFInfo
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- KR101285171B1 KR101285171B1 KR1020110080023A KR20110080023A KR101285171B1 KR 101285171 B1 KR101285171 B1 KR 101285171B1 KR 1020110080023 A KR1020110080023 A KR 1020110080023A KR 20110080023 A KR20110080023 A KR 20110080023A KR 101285171 B1 KR101285171 B1 KR 101285171B1
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- titanium oxide
- lithium titanium
- lithium
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- FDLZQPXZHIFURF-UHFFFAOYSA-N [O-2].[Ti+4].[Li+] Chemical compound [O-2].[Ti+4].[Li+] FDLZQPXZHIFURF-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 31
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 28
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 239000002994 raw material Substances 0.000 claims abstract description 15
- 238000002156 mixing Methods 0.000 claims abstract description 11
- 238000001035 drying Methods 0.000 claims abstract description 9
- 239000011363 dried mixture Substances 0.000 claims abstract description 6
- 239000007772 electrode material Substances 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 238000010304 firing Methods 0.000 claims description 16
- 239000010936 titanium Substances 0.000 claims description 12
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 claims description 8
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 8
- 229910052719 titanium Inorganic materials 0.000 claims description 8
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 4
- 229910013553 LiNO Inorganic materials 0.000 claims description 3
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 3
- FUJCRWPEOMXPAD-UHFFFAOYSA-N lithium oxide Chemical compound [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 claims 2
- 229910001947 lithium oxide Inorganic materials 0.000 claims 2
- 239000000463 material Substances 0.000 abstract description 16
- 238000006243 chemical reaction Methods 0.000 abstract description 8
- 238000010438 heat treatment Methods 0.000 abstract description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract 1
- 229910052698 phosphorus Inorganic materials 0.000 abstract 1
- 239000011574 phosphorus Substances 0.000 abstract 1
- 239000002245 particle Substances 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 9
- 239000007773 negative electrode material Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000002425 crystallisation Methods 0.000 description 4
- 230000008025 crystallization Effects 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 239000003575 carbonaceous material Substances 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 229910018095 Ni-MH Inorganic materials 0.000 description 2
- 229910018477 Ni—MH Inorganic materials 0.000 description 2
- 239000011149 active material Substances 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 210000004027 cell Anatomy 0.000 description 2
- 239000006258 conductive agent Substances 0.000 description 2
- 230000001186 cumulative effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000002427 irreversible effect Effects 0.000 description 2
- 238000003921 particle size analysis Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229910012851 LiCoO 2 Inorganic materials 0.000 description 1
- 229910015643 LiMn 2 O 4 Inorganic materials 0.000 description 1
- 229910013290 LiNiO 2 Inorganic materials 0.000 description 1
- 229910001290 LiPF6 Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 210000001787 dendrite Anatomy 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- VGYDTVNNDKLMHX-UHFFFAOYSA-N lithium;manganese;nickel;oxocobalt Chemical compound [Li].[Mn].[Ni].[Co]=O VGYDTVNNDKLMHX-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 239000011255 nonaqueous electrolyte Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 239000011164 primary particle Substances 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 229910000314 transition metal oxide Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G23/00—Compounds of titanium
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G23/00—Compounds of titanium
- C01G23/003—Titanates
- C01G23/005—Alkali titanates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/06—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances
- H01B1/08—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances oxides
-
- 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
- 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
- H01M4/485—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/04—Particle morphology depicted by an image obtained by TEM, STEM, STM or AFM
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/51—Particles with a specific particle size distribution
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
-
- 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
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Manufacturing & Machinery (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
본 발명에 따른 리튬티탄산화물 제조방법은 리튬티탄산화물 제조를 위한 원료물질을 혼합하는 단계; 상기 혼합물질을 건조시키는 단계; 및 상기 건조된 혼합물질을 이동시키면서 소성시키는 단계를 포함하는 것을 특징으로 하며, 본 발명에 리튬티탄산화물 제조방법은 이동되는 과정에서 반응, 건조 및 열처리가 이루어지므로, 종래의 회분방식에 비하여 보다 경제적인 방식으로, 대용량의 리튬티탄산화물을 제조할 수 있다. 더 나아가, 이러한 연속 반응 방식으로 제조된 리튬티탄산화물은 전극 재료로서 회분 반응 방식으로 제조된 리튬티탄산화물에 비하여 우수한 전극 특성을 나타낸다.
Description
도 2는 본 발명에 따른 방법에 따라 제조된 재료에 대한 입자 이미지이다.
도 3은 비교 물질에 대한 입자 이미지이다.
도 4는 전압에 따른 전지 비용량 그래프이다.
실시예 1 | 실시예 2 | 비교예1 | |
SSA [m2/g] | 60.6 | 68.2 | 69.8 |
d10 [㎛] | 0.12 | 0.13 | 0.05 |
d50 [㎛] | 0.24 | 0.26 | 0.15 |
d90 [㎛] | 0.34 | 0.35 | 0.20 |
pH | 11.94 | 11.88 | 11.67 |
실시예 1 | 실시예 2 | 비교예 1 | |||||
Cycle | Mode | [+]mAh/g | 효율 | [+]mAh/g | 효율 | [+]mAh/g | 효율 |
[-]mAh/g | [-]mAh/g | [-]mAh/g | |||||
1 | CHA | 137.7 | 89.0 | 137.9 | 89.5 | 136.4 | 88.8 |
DCH | 154.7 | 154.1 | 153.6 | ||||
2 | CHA | 138.4 | 89.5 | 138.1 | 89.4 | 136.6 | 88.9 |
DCH | 154.7 | 154.4 | 153.7 | ||||
3 | CHA | 138.2 | 89.3 | 137.4 | 89.5 | 136.0 | 88.8 |
DCH | 154.8 | 153.6 | 153.1 |
Relative Capacity [%] | |||
C-rate | 비교예 1 | 실시예 1 | 실시예 2 |
0.5C | 100.0 | 100.0 | 100.0 |
1.0C | 97.7 | 97.2 | 97.9 |
2.0C | 94.1 | 94.0 | 95.3 |
5.0C | 88.2 | 89.2 | 91.1 |
8.0C | 82.4 | 85.5 | 88.2 |
10.0C | 77.4 | 82.9 | 85.5 |
12.0C | 71.2 | 78.3 | 83.2 |
Claims (8)
- 리튬티탄산화물 제조를 위한 원료물질을 혼합하는 단계;
상기 혼합물질을 건조시키는 단계; 및
상기 건조된 혼합물질을 이동시키면서 소성시키는 단계를 포함하는 것을 특징으로 하는 리튬티탄산화물 제조방법. - 제 1항에 있어서,
상기 혼합, 건조 및 소성은 연속적으로 수행되는 것을 특징으로 하는 리튬티탄산화물 제조방법. - 제 1항에 있어서,
상기 소성 단계에서 상기 건조된 혼합물질의 이동은 중력에 의하여 진행되는 것을 특징으로 하는 리튬티탄산화물 제조방법. - 제 1항에 있어서,
상기 원료물질은 Li2CO3, LiOH, LiF, Li2SO4, LiNO3, LiCl로 이루어진 군으로부터 선택된 1종 이상의 리튬공급원 및 TiO2, TiCl4, TiOCl2, TiOSO4, TiO(OH)2로 이루어진 군으로부터 선택된 1종 이상의 티탄공급원을 포함하는 것을 특징으로 하는 리튬티탄산화물 제조방법. - 제 4항에 있어서,
상기 원료물질은 탄소를 더 포함하는 것을 특징으로 하는 리튬티탄산화물 제조방법. - 제 1항에 있어서,
상기 원료물질의 혼합은 인라인 믹서에 의하여 수행되는 것을 특징으로 하는 리튬티탄산화물 제조방법. - 제 1항 내지 제 6항 중 어느 한 항에 따른 방법에 의하여 제조되며,
pH가 11.94 또는 11.88인 리튬티탄산화물. - 제 7항에 따른 리튬티탄산화물을 전극재료로 포함하는 리튬이차전지.
Applications Claiming Priority (2)
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KR20100077375 | 2010-08-11 | ||
KR1020100077375 | 2010-08-11 |
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KR20120022622A KR20120022622A (ko) | 2012-03-12 |
KR101285171B1 true KR101285171B1 (ko) | 2013-07-11 |
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KR1020110080023A Expired - Fee Related KR101285171B1 (ko) | 2010-08-11 | 2011-08-11 | 리튬티탄산화물 제조방법, 이에 의하여 제조된 리튬티탄산화물 및 이를 포함하는 리튬 이차전지 |
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KR (1) | KR101285171B1 (ko) |
WO (1) | WO2012020998A2 (ko) |
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CN103117381B (zh) * | 2013-01-25 | 2016-08-03 | 合肥国轩高科动力能源有限公司 | 一种低能耗固相法制备纳米钛酸锂材料的方法 |
CN103326008A (zh) * | 2013-05-21 | 2013-09-25 | 合肥国轩高科动力能源股份公司 | 一种压块烧结合成钛酸锂负极材料的方法 |
CN106159250A (zh) * | 2016-08-15 | 2016-11-23 | 四川兴能新材料有限公司 | 一种偏钛酸为钛源的钛酸锂电极材料及其制备方法 |
KR102643446B1 (ko) * | 2021-09-30 | 2024-03-07 | 조영기 | 양극재 연속생산방법 |
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KR20080023831A (ko) * | 2006-09-12 | 2008-03-17 | 주식회사 엘지화학 | 리튬티탄산화물 분말, 그 제조방법, 이를 포함하는 전극,및 이차전지 |
KR100873273B1 (ko) * | 2006-02-17 | 2008-12-11 | 주식회사 엘지화학 | 리튬-금속 복합산화물의 제조방법 |
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JP4540167B2 (ja) * | 1999-02-16 | 2010-09-08 | 東邦チタニウム株式会社 | チタン酸リチウムの製造方法 |
KR100547028B1 (ko) * | 2003-10-16 | 2006-01-31 | 김중호 | 금속산화물 및 착색산화물을 이용한 흑색 벽돌 및보도블럭 제조방법 |
WO2010082761A2 (ko) * | 2009-01-13 | 2010-07-22 | 한양대학교 산학협력단 | 결정성 이산화티탄 분말의 제조 방법, 음극 활물질의 제조 방법, 음극 활물질 및 리튬 이차 전지 |
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KR100873273B1 (ko) * | 2006-02-17 | 2008-12-11 | 주식회사 엘지화학 | 리튬-금속 복합산화물의 제조방법 |
KR20080023831A (ko) * | 2006-09-12 | 2008-03-17 | 주식회사 엘지화학 | 리튬티탄산화물 분말, 그 제조방법, 이를 포함하는 전극,및 이차전지 |
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WO2012020998A3 (ko) | 2012-05-10 |
KR20120022622A (ko) | 2012-03-12 |
WO2012020998A2 (ko) | 2012-02-16 |
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