1,3,5-Trihydroxybenzene as a film-forming additive for high-voltage positive electrode

被引：39

作者：

Kang, Yoon-Sok ^{[1
]}

Yoon, Taeho ^{[3
,4
]}

Lee, Seok Soo ^{[1
]}

Mun, Junyoung ^{[1
]}

Park, Min Sik ^{[1
]}

Park, Jin-Hwan ^{[1
]}

Doo, Seok-Gwang ^{[1
]}

Song, In-Yong ^{[2
]}

Oh, Seung M. ^{[3
,4
]}

机构：

[1] Samsung Elect Co Ltd, Battery Grp, SAIT, Gyeonggi Do 446712, South Korea

[2] Samsung Elect Co Ltd, Analyt Sci Grp, SAIT, Gyeonggi Do 446712, South Korea

[3] Seoul Natl Univ, Dept Chem & Biol Engn, Seoul 151744, South Korea

[4] Seoul Natl Univ, WCU Program C2E2, Seoul 151744, South Korea

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2013年 / 27卷

关键词：

1,3,5-Trihydroxybenzene; Additive; Over-lithiated layered oxide; High-voltage positive electrode; Lithium-ion battery; LITHIUM-ION BATTERIES; OVERCHARGE PROTECTION; LIQUID; CELLS;

D O I：

10.1016/j.elecom.2012.10.029

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

1,3,5-trihydroxybenzene (THB) is examined as a film-forming additive for over-lithiated layered oxide positive electrode. The surface film generated from the carbonate-based electrolyte (THB-free) is thermally/electrochemically unstable to be dissolved or decomposed during elevated-temperature cycling. Due to this instability, electric charges are consumed in every cycle for electrolyte decomposition to give a low coulombic efficiency. In contrast, the protective film that is generated by oxidative decomposition of the additive (THB) prior to the carbonate electrolyte is robust enough to remain intact. As a result, a full-cell comprising graphite/over-lithiated layered oxide gives a higher coulombic efficiency and longer life cycle. (c) 2012 Elsevier B.V. All rights reserved.

引用

页码：26 / 28

页数：3

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