KR20160032632A - 리튬 이차 전지 - Google Patents
리튬 이차 전지 Download PDFInfo
- Publication number
- KR20160032632A KR20160032632A KR1020140123030A KR20140123030A KR20160032632A KR 20160032632 A KR20160032632 A KR 20160032632A KR 1020140123030 A KR1020140123030 A KR 1020140123030A KR 20140123030 A KR20140123030 A KR 20140123030A KR 20160032632 A KR20160032632 A KR 20160032632A
- Authority
- KR
- South Korea
- Prior art keywords
- lithium
- negative electrode
- weight
- parts
- lithium secondary
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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- MCVFFRWZNYZUIJ-UHFFFAOYSA-M lithium;trifluoromethanesulfonate Chemical compound [Li+].[O-]S(=O)(=O)C(F)(F)F MCVFFRWZNYZUIJ-UHFFFAOYSA-M 0.000 claims abstract description 38
- 239000002210 silicon-based material Substances 0.000 claims abstract description 26
- 239000003960 organic solvent Substances 0.000 claims abstract description 18
- 239000007773 negative electrode material Substances 0.000 claims abstract description 17
- 239000000654 additive Substances 0.000 claims abstract description 11
- 230000000996 additive effect Effects 0.000 claims abstract description 11
- 229910003002 lithium salt Inorganic materials 0.000 claims abstract description 11
- 159000000002 lithium salts Chemical class 0.000 claims abstract description 11
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- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 6
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- 229910008326 Si-Y Inorganic materials 0.000 claims description 3
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- 229910006773 Si—Y Inorganic materials 0.000 claims description 3
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Images
Classifications
-
- 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
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0566—Liquid materials
- H01M10/0567—Liquid materials characterised by the additives
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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Abstract
Description
도 2 내지 5는 각각 실시예 1, 비교예 1, 비교예 3 및 비교예 5에 따른 리튬 이차 전지의 사이클릭 볼타메트리(cyclic voltammetry) 분석 그래프이다.
도 6은 실시예 2 및 비교예 2에 따른 리튬 이차 전지의 수명 특성을 나타내는 그래프이다.
도 7은 실시예 1, 3 및 4에 따른 리튬 이차 전지의 수명 특성을 나타내는 그래프이다.
도 8은 실시예 3, 5 및 6에 따른 리튬 이차 전지의 수명 특성을 나타내는 그래프이다.
도 9는 실시예 1과 비교예 1, 3 및 5에 따른 리튬 이차 전지의 수명 특성을 나타내는 그래프이다.
음극 활물질 | 전해액 첨가제(중량부) | ||
리튬 트리플레이트 | 플루오로에틸렌 카보네이트 | ||
실시예 1 | Si계 물질 | 1 | 10 |
실시예 2 | Si계 물질 | 2 | 10 |
실시예 3 | Si계 물질 | 3 | 10 |
실시예 4 | Si계 물질 | 5 | 10 |
실시예 5 | Si계 물질 | 5 | 7 |
실시예 6 | Si계 물질 | 7 | 5 |
비교예 1 | Si계 물질 | 0 | 10 |
비교예 2 | Si계 물질 | 2 | 0 |
비교예 3 | 흑연 | 0 | 10 |
비교예 4 | 흑연 | 1 | 0 |
비교예 5 | 흑연 | 1 | 10 |
10: 전극 조립체
20: 전지 용기
13: 전극탭
Claims (7)
- 음극 활물질을 포함하는 음극;
양극; 및
리튬염, 유기용매 및 첨가제를 포함하는 전해액을 포함하고,
상기 음극 활물질은 Si계 물질을 포함하고,
상기 첨가제는 리튬 트리플레이트(lithium triflate) 및 플루오로에틸렌 카보네이트를 포함하는 리튬 이차 전지. - 제1항에 있어서,
상기 리튬 트리플레이트는 상기 유기용매 100 중량부에 대하여 0.5 내지 10 중량부로 포함되는 리튬 이차 전지. - 제1항에 있어서,
상기 리튬 트리플레이트는 상기 유기용매 100 중량부에 대하여 3 내지 5 중량부로 포함되는 리튬 이차 전지. - 제1항에 있어서,
상기 플루오로에틸렌 카보네이트는 상기 유기용매 100 중량부에 대하여 5 내지 20 중량부로 포함되는 리튬 이차 전지. - 제1항에 있어서,
상기 플루오로에틸렌 카보네이트는 상기 유기용매 100 중량부에 대하여 10 내지 20 중량부로 포함되는 리튬 이차 전지. - 제1항에 있어서,
상기 리튬 트리플레이트 및 상기 플루오로에틸렌 카보네이트의 중량비는 1:2 내지 1:10 인 리튬 이차 전지. - 제1항에 있어서,
상기 Si계 물질은 Si, SiOx(0<x≤2), Si-Y 합금(Y는 알칼리 금속, 알칼리 토금속, 13족 내지 16족 원소, 전이금속, 희토류 원소 및 이들의 조합으로 이루어진 군에서 선택되는 원소이며, Si은 아님), Si-C 복합체, 또는 이들의 조합을 포함하는 리튬 이차 전지.
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KR1020140123030A KR102272271B1 (ko) | 2014-09-16 | 2014-09-16 | 리튬 이차 전지 |
EP15169979.0A EP2999033B1 (en) | 2014-09-16 | 2015-05-29 | Rechargeable lithium battery |
US14/729,000 US9755275B2 (en) | 2014-09-16 | 2015-06-02 | Rechargeable lithium battery |
CN201510430819.6A CN105428712B (zh) | 2014-09-16 | 2015-07-21 | 可再充电锂电池 |
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KR20230068666A (ko) * | 2021-11-11 | 2023-05-18 | 주식회사 엘지에너지솔루션 | 리튬 이차전지 |
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US20160172661A1 (en) | 2014-12-12 | 2016-06-16 | Pellion Technologies, Inc. | Electrochemical cell and method of making the same |
JP6737333B2 (ja) * | 2016-04-12 | 2020-08-05 | ダイキン工業株式会社 | 電解液、電気化学デバイス、リチウムイオン二次電池、及び、モジュール |
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CN106099174A (zh) * | 2016-08-26 | 2016-11-09 | 东莞市凯欣电池材料有限公司 | 一种硅基负极高电压锂离子电池 |
KR102570117B1 (ko) * | 2017-11-07 | 2023-08-22 | 삼성에스디아이 주식회사 | 리튬 이차 전지용 전극 및 이를 포함하는 리튬 이차 전지 |
CN112310475B (zh) * | 2019-07-31 | 2023-08-18 | 新亚杉杉新材料科技(衢州)有限公司 | 一种锂离子电池非水电解液及锂离子电池 |
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