Aqueous emulsion of conductive polymer binders for Si anode materials in lithium ion batteries

被引：24

作者：

Zheng, Tianyue ^{[1
]}

Zhang, Ting ^{[2
]}

de la Fuente, Mauricio Solis ^{[1
]}

Liu, Gao ^{[1
]}

机构：

[1] Lawrence Berkeley Natl Lab, Energy Storage & Distributed Resources Div, 1 Cyclotron Rd, Berkeley, CA 94720 USA

[2] Beijing Inst Technol, Sch Opt & Photon, 5 South Zhongguancun St, Beijing 100081, Peoples R China

来源：

EUROPEAN POLYMER JOURNAL | 2019年 / 114卷

基金：

中国国家自然科学基金;

关键词：

Emulsion polymer; Conductive polymer binder; Silicon material; Lithium ion battery; CARBOXYMETHYL CELLULOSE; NEGATIVE ELECTRODES; SILICON ANODES; PERFORMANCE; GENERATION; LI;

D O I：

10.1016/j.eurpolymj.2019.02.041

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

To combine the advantages of conductive polymer binders and aqueous battery electrode coating processes, a versatile emulsion polymerization method is developed to prepare conductive polymer binder emulsions in water for lithium ion battery applications. These polymer emulsions are used as-is as the binder for silicon containing anode materials. In the resulting electrodes, the binder particles and the active material particles are adhered through "point contact". Increasing the content of aromatic units in the polymer binders can improve the battery performance. After optimization of the material composition in the electrodes, the batteries can achieve about 880 mAh.g(-1) initial capacity for graphite/silicon composite materials at a ratio of 73/15 with about 75% capacity retention after 200 cycles.

引用

页码：265 / 270

页数：6

共 23 条

[1]

[Anonymous], 1940, CHEM ED, DOI DOI 10.1021/ED018P249.1

[2] Building better batteries [J].