Carboxymethyl chitosan: A new water soluble binder for Si anode of Li-ion batteries

被引：200

作者：

Yue, Lu ^{[1
,2
]}

Zhang, Lingzhi ^{[1
]}

Zhong, Haoxiang ^{[1
]}

机构：

[1] Chinese Acad Sci, Guangzhou Inst Energy Convers, CAS Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100039, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2014年 / 247卷

基金：

美国国家科学基金会;

关键词：

Nanosize Si; Carboxymethyl chitosan; Binder; Anode; Li-ion battery; NEGATIVE ELECTRODES; NANOWIRES;

D O I：

10.1016/j.jpowsour.2013.08.073

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Carboxymethyl chitosan (C-chitosan) is investigated as a new water soluble binder for Si anode of Li-ion batteries. The Fourier transformation infrared spectroscopy (FIR) and X-ray photoelectron spectroscopy (XPS) measurements reveal that the strong hydrogen bonding is formed between the hydroxylated Si surface and the polar groups (-OH, -COOH and -NH2) of C-chitosan. The Si/C-chitosan anode (Si:carbon black:C-chitosan = 62:30:8 in weight ratio) exhibits a high first discharge capacity (4270 mAh g(-1)) with a first coulombic efficiency of 89%, and maintains a capacity of 950 mAh g(-1) at the current density of 500 mA g(-1) over 50 cycles. Crown Copyright (C) 2013 Published by Elsevier B.V. All rights reserved.

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页码：327 / 331

页数：5

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