KR101483123B1 - 금속 나노결정 복합체를 포함하는 음극 활물질, 그 제조방법 및 이를 채용한 음극과 리튬 전지 - Google Patents
금속 나노결정 복합체를 포함하는 음극 활물질, 그 제조방법 및 이를 채용한 음극과 리튬 전지 Download PDFInfo
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Abstract
Description
사용된 음극활물질 | 초기용량 (mAh/g) |
50회 충방전 후 용량 유지율(%) |
실시예 1 | 600 | 91 |
실시예 2 | 1020 | 86 |
실시예 3 | 708 | 90 |
실시예 4 | 450 | 86 |
실시예 5 | 560 | 91 |
실시예 6 | 730 | 62 |
실시예 7 | 760 | 63 |
실시예 8 | 320 | 96 |
실시예 9 | 1100 | 80 |
실시예 10 | 990 | 60 |
실시예 11 | 735 | 54 |
비교예 1 | 225 | 10 |
비교예 2 | 600 | 17 |
Claims (32)
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- 유기 분자로 캡핑된 금속 나노결정을 준비하는 단계; 및상기 금속 나노결정에 캡핑된 유기 분자를 탄화시켜 탄소층으로 코팅된 금속 나노결정 복합체를 제조하는 단계;를 포함하는 음극 활물질 제조 방법.
- 제 15 항에 있어서, 상기 유기 분자로 캡핑된 금속 나노결정이 화학적으로 습식 합성된 것을 특징으로 하는 음극 활물질 제조 방법.
- 제 15 항에 있어서, 상기 캡핑된 유기 분자가 탄소수 2 내지 10 의 알킬기, 탄소수 3 내지 10 의 아릴알킬기, 탄소수 3 내지 10 의 알킬아릴기, 또는 탄소수 2 내지 10의 알콕시기를 포함하는 것을 특징으로 하는 음극 활물질 제조 방법.
- 제 15 항에 있어서, 상기 금속 나노결정의 평균 입경이 20nm 이하인 것을 특징으로 하는 음극 활물질 제조 방법.
- 제 15 항에 있어서, 상기 캡핑된 유기 분자의 탄화가 상기 유기 분자로 캡핑된 금속 나노결정을 불활성 분위기에 소성시켜 행해지는 것을 특징으로 하는 음극 활물질 제조 방법.
- 제 19 항에 있어서, 상기 소성 온도가 500 내지 1000℃인 것을 특징으로 하는 음극 활물질 제조 방법.
- 제 19 항에 있어서, 상기 소성 시간이 1 내지 5 시간인 것을 특징으로 하는 음극 활물질 제조 방법.
- 제 15 항에 있어서, 상기 유기 분자로 캡핑된 금속 나노결정을 준비하는 단계가 금속 나노결정 전구체 및 환원제를 용액상에서 반응시키는 단계를 포함하는 것을 특징으로 하는 음극 활물질 제조 방법.
- 제 22 항에 있어서, 상기 금속 나노결정 전구체의 금속이 2족 금속, 3족 금속, 4족 금속 또는 이들의 합금인 것을 특징으로 하는 음극 활물질 제조 방법.
- 제 22 항에 있어서, 상기 금속 나노결정 전구체의 금속이 Si, Sn, Ge, Al, Pb 및 이들의 합금으로 이루어진 군에서 선택되는 1이 상의 금속인 것을 특징으로 하는 캡핑된 음극 활물질 제조 방법.
- 제 22 항에 있어서, 상기 금속 나노결정 전구체의 금속이 리튬과 반응하지 않는 금속을 포함하는 것을 특징으로 하는 음극 활물질 제조 방법.
- 제 25 항에 있어서, 상기 리튬과 반응하지 않는 금속이 Co, Fe, Ni, Cu 및 Ti 로 이루어진 군에서 선택된 1 이상의 금속인 것을 특징으로 하는 음극 활물질 제조 방법.
- 제 22 항에 있어서, 상기 금속 나노결정 전구체가 금속 할로겐화물로 이루어진 군에서 선택되는 1 이상의 화합물인 것을 특징으로 하는 음극 활물질 제조 방법.
- 제 22 항에 있어서, 상기 환원제가 유기금속 화합물인 것을 특징으로 하는 음극 활물질 제조 방법.
- 제 28 항에 있어서, 상기 유기금속 화합물이 나트륨 나프탈렌화물, 칼륨 나프탈렌화물, 나트륨 안트라센화물 및 칼륨 안트라센화물로 이루어진 군에서 선택되는 1 이상의 화합물인 것을 특징으로 하는 음극 활물질 제조 방법.
- 제 22 항에 있어서, 상기 금속 나노결정 전구체 및 환원제를 용액상에서 반응시키는 단계가 상기 용액에 상기 금속 나노결정을 캡핑하는 작용기를 포함하는 화합물이 첨가되는 단계를 추가적으로 포함하는 것을 특징으로 하는 음극 활물질 제조 방법.
- 제 15 항에 있어서, 상기 유기 분자로 캡핑된 금속 나노결정을 준비하는 단계가 금속 나노결정 전구체 및 환원제를 백금 촉매 존재하에서 용액상에서 반응시키는 단계를 포함하는 것을 특징으로 하는 음극 활물질 제조 방법.
- 제 31 항에 있어서, 상기 백금 촉매가 H2PtCl6, (NH4)2PtCl4, (NH4)2PtCl6, K2PtCl4, 및 K2PtCl6 로 이루어진 군에서 선택된 1 이상의 화합물인 것을 특징으로 하는 음극 활물질 제조 방법.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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KR20060041640A KR101483123B1 (ko) | 2006-05-09 | 2006-05-09 | 금속 나노결정 복합체를 포함하는 음극 활물질, 그 제조방법 및 이를 채용한 음극과 리튬 전지 |
CN2007100014362A CN101222039B (zh) | 2006-05-09 | 2007-01-08 | 包含金属纳米晶体复合物的负极活性物质及其制法以及包含该负极活性物质的阳极和锂电池 |
JP2007060380A JP5642918B2 (ja) | 2006-05-09 | 2007-03-09 | 金属ナノ結晶複合体を含む負極活物質、その製造方法及びそれを採用した負極とリチウム電池 |
US11/736,549 US20070264574A1 (en) | 2006-05-09 | 2007-04-17 | Negative active material including metal nanocrystal composite, method of preparing the same, and anode and lithium battery including the negative active material |
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KR20060041640A KR101483123B1 (ko) | 2006-05-09 | 2006-05-09 | 금속 나노결정 복합체를 포함하는 음극 활물질, 그 제조방법 및 이를 채용한 음극과 리튬 전지 |
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KR20070109118A KR20070109118A (ko) | 2007-11-15 |
KR101483123B1 true KR101483123B1 (ko) | 2015-01-16 |
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KR20060041640A Expired - Fee Related KR101483123B1 (ko) | 2006-05-09 | 2006-05-09 | 금속 나노결정 복합체를 포함하는 음극 활물질, 그 제조방법 및 이를 채용한 음극과 리튬 전지 |
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US (1) | US20070264574A1 (ko) |
JP (1) | JP5642918B2 (ko) |
KR (1) | KR101483123B1 (ko) |
CN (1) | CN101222039B (ko) |
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GB2395059B (en) * | 2002-11-05 | 2005-03-16 | Imp College Innovations Ltd | Structured silicon anode |
GB0601318D0 (en) | 2006-01-23 | 2006-03-01 | Imp Innovations Ltd | Method of etching a silicon-based material |
GB0601319D0 (en) | 2006-01-23 | 2006-03-01 | Imp Innovations Ltd | A method of fabricating pillars composed of silicon-based material |
AU2007256628A1 (en) * | 2006-06-06 | 2007-12-13 | Nanoscale Corporation | Synthesis of high surface area nanogrystalline materials useful in battery applications |
GB0709165D0 (en) | 2007-05-11 | 2007-06-20 | Nexeon Ltd | A silicon anode for a rechargeable battery |
GB0713895D0 (en) | 2007-07-17 | 2007-08-29 | Nexeon Ltd | Production |
GB0713898D0 (en) | 2007-07-17 | 2007-08-29 | Nexeon Ltd | A method of fabricating structured particles composed of silcon or a silicon-based material and their use in lithium rechargeable batteries |
GB0713896D0 (en) | 2007-07-17 | 2007-08-29 | Nexeon Ltd | Method |
US8399147B2 (en) * | 2007-12-28 | 2013-03-19 | Honda Motor Co., Ltd. | Electrolyte-electrode assembly comprising an apatite-type oxide electrolyte and method for manufacturing the same |
JP4725585B2 (ja) * | 2008-02-01 | 2011-07-13 | トヨタ自動車株式会社 | 負極活物質、リチウム二次電池、および負極活物質の製造方法 |
KR101407650B1 (ko) | 2008-04-04 | 2014-06-13 | 성균관대학교산학협력단 | 나노입자 제조방법, 나노입자 및 이를 포함한 전극을구비한 리튬 전지 |
CN102017246A (zh) * | 2008-04-30 | 2011-04-13 | 住友电木株式会社 | 锂二次电池负极用碳材及其制造方法、锂二次电池负极以及锂二次电池 |
US8574337B2 (en) | 2008-06-18 | 2013-11-05 | Board Of Trustees Of The University Of Arkansas | Renewable resource-based metal-containing materials and applications of the same |
US9095837B2 (en) | 2008-06-18 | 2015-08-04 | Broad of Trustees of the University of Arkansas | Renewable resource-based metal oxide-containing materials and applications of the same |
EP2297030A1 (en) | 2008-06-18 | 2011-03-23 | Board of Trustees of the University of Arkansas | Microwave-assisted synthesis of carbon and carbon-metal composites from lignin, tannin and asphalt derivatives and applications of same |
US8647512B2 (en) | 2008-06-18 | 2014-02-11 | Board Of Trustees Of The University Of Arkansas | Use of magnetic carbon composites from renewable resource materials for oil spill clean up and recovery |
US8920688B2 (en) * | 2008-06-18 | 2014-12-30 | Board Of Trustees Of The University Of Arkansas | Microwave-assisted synthesis of transition metal phosphide |
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Also Published As
Publication number | Publication date |
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CN101222039A (zh) | 2008-07-16 |
JP2007305569A (ja) | 2007-11-22 |
CN101222039B (zh) | 2011-05-04 |
KR20070109118A (ko) | 2007-11-15 |
JP5642918B2 (ja) | 2014-12-17 |
US20070264574A1 (en) | 2007-11-15 |
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