A combination of lithium difluorophosphate and vinylene carbonate as reducible additives to improve cycling performance of graphite electrodes at high rates

被引：89

作者：

Kim, Ko-Eun ^{[1
]}

Jang, Jun Yeong ^{[1
]}

Park, Inbok ^{[1
]}

Woo, Myung-Heui ^{[2
]}

Jeong, Myung-Hwan ^{[2
]}

Shin, Woo Cheol ^{[2
]}

Ue, Makoto ^{[2
]}

Choi, Nam-Soon ^{[1
]}

机构：

[1] Ulsan Natl Inst Sci & Technol UNIST, Sch Energy & Chem Engn, Ulsan 689798, South Korea

[2] Samsung SDI, Battery R&D Ctr, Suwon 443803, Gyeonggi Do, South Korea

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2015年 / 61卷

基金：

新加坡国家研究基金会;

关键词：

Lithium-ion battery; Graphite; Anode; Electrolyte; Additive; LI-ION BATTERIES; RATE CAPABILITY; ANODE; SULTONE; CELLS;

D O I：

10.1016/j.elecom.2015.10.013

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Lithium difluorophosphate (LiDFP) as a reducible additive is employed to overcome the unsatisfactory rate capability and cycling instability of highly pressed graphite electrodes with high mass loading (8.1 mg/cm(2)) with a vinylene carbonate (VC)-derived surface film that hampers the charge transport at the graphite electrolyte interface at high rates. Our investigation reveals that LiDFP modifies the surface chemistry induced by VC and makes a more ionically conductive surface film on graphite, ensuring good rate capability. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：121 / 124

页数：4

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