Cross-Linked Poly(acrylic acid) with Polycarbodiimide as Advanced Binder for Si/Graphite Composite Negative Electrodes in Li-Ion Batteries

被引：62

作者：

Han, Zhen-Ji ^{[1
]}

Yabuuchi, Naoaki ^{[1
]}

Hashimoto, Shota ^{[2
]}

Sasaki, Takeo ^{[2
]}

Komaba, Shinichi ^{[1
]}

机构：

[1] Tokyo Univ Sci, Dept Appl Chem, Shinjuku Ku, Tokyo 1628601, Japan

[2] Tokyo Univ Sci, Dept Chem, Shinjuku Ku, Tokyo 1628601, Japan

来源：

ECS ELECTROCHEMISTRY LETTERS | 2013年 / 2卷 / 02期

关键词：

HIGH-CAPACITY; CARBOXYMETHYL CELLULOSE; GRAPHITE ANODE; CYCLE LIFE; LITHIUM; SILICON; POLYACRYLATE; PERFORMANCE;

D O I：

10.1149/2.005302eel

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Cross-linked poly(acrylic acid) (PAA) with polycarbodiimide (PCD) is utilized as a binder for the Si/graphite composite electrode. Cross-linkage of PAA can be modulated by the addition of the PCD as a cross-linker into the slurry. Compared to PAA binder, initial reversible capacity of Si/graphite composite electrodes is increased with suppressed electrolyte decomposition by the use of cross-linked PAA. The electrode adhesion strength onto current collector is increased by the cross-linking of PAA with PCD. The Si-composite electrode with optimal amount of 1 wt% PCD cross-linker delivers more than 1,000 mAh g(-1) of reversible capacity with improved capacity retention. (c) 2012 The Electrochemical Society. All rights reserved.

引用

页码：A17 / A20

页数：4

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