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论文类型：期刊论文

发表时间：2012-11-01

发表刊物：JOURNAL OF POWER SOURCES

收录刊物：SCIE、EI、Scopus

卷号：217

页面范围：108-113

ISSN号：0378-7753

关键字：Tin; Nanomaterial; Negative electrode; Lithium secondary battery; Binder; Carboxymethyl cellulose

摘要：The influence of the binder types on the electrochemical characteristics of the tin nanoparticle negative electrode for lithium secondary batteries has been investigated using cyclic voltammetry, charge-discharge test, electrochemical impedance spectroscopy, scanning electron microscope, and transmission electron microscope. The results show that the initial capacity and the cyclic retention of the tin electrode using carboxymethyl cellulose as a binder are better than those of using polyvinylidene fluoride as a binder. Moreover, the cycle performance is further enhanced by the addition of acetylene black into the electrodes using the carboxymethyl cellulose binder. The good capacity retention in the subsequent cycles may be attributed to the formed branch-like structure on the surface of the tin nanoparticles during cycling. (C) 2012 Elsevier B.V. All rights reserved.