KR20170037443A - 복합 음극 활물질, 상기 복합 음극 활물질을 포함하는 음극 및 상기 음극을 포함하는 리튬 이차전지 - Google Patents
복합 음극 활물질, 상기 복합 음극 활물질을 포함하는 음극 및 상기 음극을 포함하는 리튬 이차전지 Download PDFInfo
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Abstract
Description
도 2는 본 발명의 일구현예에 따른 리튬 이차전지의 개략도이다.
도 3은 실시예 1~4 및 비교예 1~4에서 제조된 코인 하프 셀의 사이클 수에 따른 용량 유지율의 변화를 나타낸 도면이다.
| 실시예 | 비교예 | ||||||
| 1 | 2 | 3 | 4 | 2 | 3 | 4 | |
| 금속 인산염의 종류 | Li0 . 5AlPO4F | Li1AlPO4F | Li1 . 2AlPO4F | Li0 . 5AlPO4F2 | Al203 | AlPO4 | AlPO4F |
| 실시예 | 비교예 | |||||||
| 1 | 2 | 3 | 4 | 1 | 2 | 3 | 4 | |
| 용량 유지율*1(%) (@ 100회) |
66 | 75 | 69 | 60 | 44 | 49 | 50 | 52 |
11a: 실리콘 11b: 탄소
12: 비금속 도핑된 금속 인산염 20: 리튬 이차전지
21: 음극 22: 분리막
23: 양극 24: 전지 케이스
25: 캡 어셈블리
Claims (9)
- 실리콘계 음극 활물질; 및
비금속 도핑된 금속 인산염(non-metal doped metal phosphate)을 포함하고,
상기 비금속 도핑된 금속 인산염은 2종 이상의 금속을 포함하는 복합 음극 활물질. - 제1항에 있어서,
상기 실리콘계 음극 활물질은 Si, SiOx(여기서, 0 < x < 2), Si-C 복합체 및 Si 합금으로부터 선택된 1종 이상을 포함하는 복합 음극 활물질. - 제2항에 있어서,
상기 Si 합금은 Fe3Si, Fe2Si, Fe5Si3, FeSi, FeSi2, FeSi3, AlSi2, Cu5Si, Mg2Si, NiSi, TiSi2 및 Si7Ti4Ni4로부터 선택된 1종 이상을 포함하는 복합 음극 활물질. - 제1항에 있어서,
상기 비금속은 F, S, N 및 B로부터 선택된 1종 이상을 포함하는 복합 음극 활물질. - 제4항에 있어서,
상기 비금속 도핑된 금속 인산염은 하기 화학식 1로 표시되는 복합 음극 활물질:
[화학식 1]
MxMePO4Ey
상기 식에서,
M은 Li, Na, Rb, La, Sr 및 Ra로부터 선택된 하나이고,
Me는 Al, Ti, Mg, Zn, V, Mn, Ga, Cr, Fe, Rh, Ni, In, Co 및 Mn으로부터 선택된 1종 이상이고,
E는 F, S, N 및 B로부터 선택된 1종 이상이고,
M과 Me는 서로 다르고,
0.01 ≤ x < 2이고, 0.01 ≤ y < 2이다. - 제1항에 있어서,
상기 비금속 도핑된 금속 인산염의 함량은 상기 실리콘계 음극 활물질 100중량부에 대하여 10중량부 미만인 복합 음극 활물질. - 제1항 내지 제6항 중 어느 한 항에 따른 복합 음극 활물질을 포함하는 음극.
- 제7항에 있어서,
상기 음극은 기타 음극 활물질을 더 포함하는 음극. - 제8항에 따른 음극을 포함하는 리튬 이차전지.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150137080A KR102557725B1 (ko) | 2015-09-25 | 2015-09-25 | 복합 음극 활물질, 상기 복합 음극 활물질을 포함하는 음극 및 상기 음극을 포함하는 리튬 이차전지 |
| US15/072,565 US10249874B2 (en) | 2015-09-25 | 2016-03-17 | Composite negative active material, negative electrode including composite negative active material, and lithium secondary battery including negative electrode |
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| Application Number | Priority Date | Filing Date | Title |
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| KR1020150137080A KR102557725B1 (ko) | 2015-09-25 | 2015-09-25 | 복합 음극 활물질, 상기 복합 음극 활물질을 포함하는 음극 및 상기 음극을 포함하는 리튬 이차전지 |
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| Publication Number | Publication Date |
|---|---|
| KR20170037443A true KR20170037443A (ko) | 2017-04-04 |
| KR102557725B1 KR102557725B1 (ko) | 2023-07-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190022342A (ko) * | 2017-08-24 | 2019-03-06 | 도요타지도샤가부시키가이샤 | 부극 활물질 입자, 부극, 리튬이온 이차 전지 및 부극 활물질 입자의 제조 방법 |
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|---|---|---|---|---|
| CN107093723B (zh) * | 2017-04-27 | 2019-06-28 | 上海电力学院 | 一种n/s双掺杂的金属碳复合物材料的制备方法 |
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| CN112216823B (zh) * | 2019-07-10 | 2022-03-08 | 上海交通大学 | 氟磷酸钒钠包覆正极材料、钠离子电池及其制备方法和应用 |
| CN110589831B (zh) * | 2019-08-26 | 2021-10-15 | 浙江工业大学 | 一种低温制备硅/碳化硅材料的方法 |
| CN111082013B (zh) * | 2019-12-18 | 2021-05-25 | 惠州亿纬创能电池有限公司 | 碳包覆氮镁掺杂多孔硅基复合材料的制备方法及锂离子电池 |
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| US10249874B2 (en) | 2019-04-02 |
| KR102557725B1 (ko) | 2023-07-24 |
| US20170092940A1 (en) | 2017-03-30 |
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