KR20090001316A - 탄소 나노 섬유를 혼성화시킨 실리콘계 리튬 이차전지용음극 활물질 - Google Patents
탄소 나노 섬유를 혼성화시킨 실리콘계 리튬 이차전지용음극 활물질 Download PDFInfo
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- KR20090001316A KR20090001316A KR1020070065592A KR20070065592A KR20090001316A KR 20090001316 A KR20090001316 A KR 20090001316A KR 1020070065592 A KR1020070065592 A KR 1020070065592A KR 20070065592 A KR20070065592 A KR 20070065592A KR 20090001316 A KR20090001316 A KR 20090001316A
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- South Korea
- Prior art keywords
- active material
- silicon
- negative electrode
- carbon nanofibers
- secondary battery
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 42
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 39
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Classifications
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- 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
- H01M4/04—Processes of manufacture in general
- H01M4/0402—Methods of deposition of the material
- H01M4/0421—Methods of deposition of the material involving vapour deposition
- H01M4/0428—Chemical vapour deposition
-
- 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
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
-
- 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
- H01M4/133—Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
-
- 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
- H01M4/139—Processes of manufacture
- H01M4/1393—Processes of manufacture of electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
-
- 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
-
- 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
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/661—Metal or alloys, e.g. alloy coatings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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- 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
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- 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
Abstract
Description
구분 | 합제밀도 (g/cc) | 방전용량 (mAh/cc) | 초기효율 (%) | 2C/0.2C 고율 (%) | 50사이클 수명 (%) |
실시예 1 | 1.12 | 927 | 82.2 | 78.8 | 82 |
비교예 1 | 1.25 | 740 | 55.3 | 11.3 | 12 |
실시예 2 | 1.28 | 1,198 | 78.1 | 86.3 | 87 |
비교예 2 | 1.03 | 864 | 56.6 | 8.7 | 6 |
실시예 3 | 1.35 | 1,180 | 71.5 | 80.5 | 81 |
비교예 3 | 0.67 | 626 | 70.2 | 83.2 | 85 |
실시예 4 | 1.44 | 713 | 73.2 | 69.9 | 58 |
비교예 4 | 1.69 | 544 | 48.5 | 5.3 | 3 |
실시예 5 | 1.33 | 1,137 | 81.2 | 82.5 | 79 |
비교예 5 | 0.95 | 626 | 59.7 | 45.5 | 27 |
실시예 6 | 1.13 | 916 | 75.8 | 81.9 | 83 |
Claims (6)
- 실리콘에 전이 금속을 함께 가공하여 만들어진 비정질성 실리콘과 합금이 공존하는 담지체 기재 표면에 촉매를 분산시켜 탄소 공급원 존재 하에서 탄소 나노 섬유를 기상 성장시켜 제조된 실리콘계 복합 음극 활물질에 있어서, 상기 담지체 기재에 대한 탄소 나노 섬유의 성장량이 2∼100 중량%임을 특징으로 하는 실리콘계 리튬 이차전지용 복합 음극 활물질
- 제 1항에 있어서, 상기 전이 금속은 주기율표상 2A, 3B, 4B, 5B족 원소 중에서 선택된 1종 이상의 전이 금속임을 특징으로 하는 실리콘계 리튬 이차전지용 복합 음극 활물질
- 제 1항에 있어서, 상기 실리콘과 실리콘 전이 금속 복합재의 비율은 X선 회절 분석법(XRD)으로 측정시 XRD 주피크의 강도의 합계비 즉 I합금 복합재/I실리콘은 0.2 이상임을 특징으로 하는 실리콘계 리튬 이차전지용 복합 음극 활물질
- 제 1항에 있어서, 상기 실리콘 담지체 분말의 개질전과 개질후의 XRD 반가폭 비교치(W후/W전)는 1.1 이상임을 특징으로 하는 실리콘계 리튬 이차전지용 복합 음극 활물질
- 제 1항에 있어서, 상기 비정질성 실리콘 또는 비정질성 실리콘과 전이 금속의 복합재 분말의 원형도는 30% 이상임을 특징으로 하는 실리콘계 리튬 이차전지용 복합 음극 활물질
- 제 1항에 있어서, 상기 실리콘계 담지체 기재 분말의 최소 입경은 탄소 나노 섬유의 최소 입경보다 큰 것을 특징으로 하는 실리콘계 리튬 이차전지용 복합 음극 활물질
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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KR1020070065592A KR100998618B1 (ko) | 2007-06-29 | 2007-06-29 | 탄소 나노 섬유를 혼성화시킨 실리콘계 리튬 이차전지용음극 활물질 |
US12/213,830 US20090053608A1 (en) | 2007-06-29 | 2008-06-25 | Anode active material hybridizing carbon nanofiber for lithium secondary battery |
PCT/KR2008/003670 WO2009005247A1 (en) | 2007-06-29 | 2008-06-26 | Anode active material hybridizing carbon nanofiber for lithium secondary battery |
Applications Claiming Priority (1)
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KR1020070065592A KR100998618B1 (ko) | 2007-06-29 | 2007-06-29 | 탄소 나노 섬유를 혼성화시킨 실리콘계 리튬 이차전지용음극 활물질 |
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KR20090001316A true KR20090001316A (ko) | 2009-01-08 |
KR100998618B1 KR100998618B1 (ko) | 2010-12-07 |
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US (1) | US20090053608A1 (ko) |
KR (1) | KR100998618B1 (ko) |
WO (1) | WO2009005247A1 (ko) |
Cited By (9)
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KR101430405B1 (ko) * | 2013-02-22 | 2014-08-14 | (주)우주일렉트로닉스 | 리튬이온전지용 음극 재료 및 그의 제조 방법 |
WO2014210015A1 (en) * | 2013-06-28 | 2014-12-31 | Intel Corporation | Robust amorphous silicon anodes, rechargable batteries having amorphous silicon anodes, and associated methods |
WO2015005648A1 (ko) * | 2013-07-09 | 2015-01-15 | 삼성정밀화학 주식회사 | 리튬이차전지용 음극 활물질, 이를 포함하는 음극용 조성물 및 리튬이차전지 |
KR20150089390A (ko) * | 2014-01-27 | 2015-08-05 | 삼성에스디아이 주식회사 | 음극 활물질, 이를 채용한 음극과 리튬 전지, 및 상기 음극 활물질의 제조방법 |
WO2016039513A1 (ko) * | 2014-09-11 | 2016-03-17 | 계명대학교 산학협력단 | 철-구리계 촉매를 이용한 실리콘계 탄소나노섬유 합성물 제조방법 및 이를 이용한 이차전지 제조방법 |
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KR100998618B1 (ko) | 2010-12-07 |
US20090053608A1 (en) | 2009-02-26 |
WO2009005247A1 (en) | 2009-01-08 |
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