KR100998618B1 - 탄소 나노 섬유를 혼성화시킨 실리콘계 리튬 이차전지용음극 활물질 - Google Patents
탄소 나노 섬유를 혼성화시킨 실리콘계 리튬 이차전지용음극 활물질 Download PDFInfo
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- KR100998618B1 KR100998618B1 KR1020070065592A KR20070065592A KR100998618B1 KR 100998618 B1 KR100998618 B1 KR 100998618B1 KR 1020070065592 A KR1020070065592 A KR 1020070065592A KR 20070065592 A KR20070065592 A KR 20070065592A KR 100998618 B1 KR100998618 B1 KR 100998618B1
- Authority
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- South Korea
- Prior art keywords
- silicon
- active material
- negative electrode
- carbon nanofibers
- secondary battery
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- 239000002134 carbon nanofiber Substances 0.000 title claims abstract description 86
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 81
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 41
- 239000007772 electrode material Substances 0.000 title description 2
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- 239000010703 silicon Substances 0.000 claims abstract description 58
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 54
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000002131 composite material Substances 0.000 claims abstract description 22
- 239000000956 alloy Substances 0.000 claims abstract description 21
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- 150000003624 transition metals Chemical class 0.000 claims abstract description 17
- 239000003054 catalyst Substances 0.000 claims abstract description 10
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910018067 Cu3Si Inorganic materials 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- XMWRBQBLMFGWIX-UHFFFAOYSA-N C60 fullerene Chemical class C12=C3C(C4=C56)=C7C8=C5C5=C9C%10=C6C6=C4C1=C1C4=C6C6=C%10C%10=C9C9=C%11C5=C8C5=C8C7=C3C3=C7C2=C1C1=C2C4=C6C4=C%10C6=C9C9=C%11C5=C5C8=C3C3=C7C1=C1C2=C4C6=C2C9=C5C3=C12 XMWRBQBLMFGWIX-UHFFFAOYSA-N 0.000 description 1
- 229910005347 FeSi Inorganic materials 0.000 description 1
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- WQGWDDDVZFFDIG-UHFFFAOYSA-N pyrogallol Chemical compound OC1=CC=CC(O)=C1O WQGWDDDVZFFDIG-UHFFFAOYSA-N 0.000 description 1
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- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
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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
-
- 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 실리콘과 실리콘 전이금속 합금이 공존하는 실리콘계 담지체 표면에 촉매를 분산시켜 탄소 공급원 존재 하에서 상기 실리콘계 담지체 중량 대비 탄소 나노 섬유 2∼100 중량%를 기상 성장시켜 제조된 실리콘계 리튬이차전지용 복합 음극 활물질에 있어서, 상기 실리콘계 담지체 내의 실리콘 전이금속 합금과 실리콘의 함량 비율은 X선 회절 분석법(XRD)으로 측정한 실리콘 전이금속 합금의 XRD 피크 강도 합계(I합금)가 실리콘 XRD 피크 강도 합계(I실리콘)에 대해 0.2 < I합금 / I실리콘 < 5이고, 상기 실리콘계 담지체 분말의 원형도는 30% 이상임을 특징으로 하는 실리콘계 리튬 이차전지용 복합음극 활물질
- 삭제
- 삭제
- 제 1항에 있어서, 상기 실리콘계 담지체 분말의 개질 전과 개질 후의 XRD 반가폭 비교치(W후/W전)는 1.1 이상임을 특징으로 하는 실리콘계 리튬 이차전지용 복합 음극 활물질
- 삭제
- 삭제
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
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)
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 |
Publications (2)
Publication Number | Publication Date |
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KR20090001316A KR20090001316A (ko) | 2009-01-08 |
KR100998618B1 true KR100998618B1 (ko) | 2010-12-07 |
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Country Status (3)
Country | Link |
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US (1) | US20090053608A1 (ko) |
KR (1) | KR100998618B1 (ko) |
WO (1) | WO2009005247A1 (ko) |
Cited By (1)
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US9349544B2 (en) | 2009-02-25 | 2016-05-24 | Ronald A Rojeski | Hybrid energy storage devices including support filaments |
US9979017B2 (en) | 2009-02-25 | 2018-05-22 | Cf Traverse Llc | Energy storage devices |
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US9966197B2 (en) | 2009-02-25 | 2018-05-08 | Cf Traverse Llc | Energy storage devices including support filaments |
US10056602B2 (en) | 2009-02-25 | 2018-08-21 | Cf Traverse Llc | Hybrid energy storage device production |
US10193142B2 (en) | 2008-02-25 | 2019-01-29 | Cf Traverse Llc | Lithium-ion battery anode including preloaded lithium |
US9412998B2 (en) | 2009-02-25 | 2016-08-09 | Ronald A. Rojeski | Energy storage devices |
US11233234B2 (en) | 2008-02-25 | 2022-01-25 | Cf Traverse Llc | Energy storage devices |
WO2009131700A2 (en) | 2008-04-25 | 2009-10-29 | Envia Systems, Inc. | High energy lithium ion batteries with particular negative electrode compositions |
KR101065778B1 (ko) * | 2008-10-14 | 2011-09-20 | 한국과학기술연구원 | 탄소나노튜브 피복 실리콘-구리 복합 입자 및 그 제조 방법과, 이를 이용한 이차전지용 음극 및 이차전지 |
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