Electrochemical characteristics of tin-coated MCMB graphite as anode in lithium-ion cells

被引：44
|
作者：
Wang, GX
Yao, J
Liu, HK
Dou, SX
Ahn, JH
机构：
[1] Univ Wollongong, Battery Technol Res Program, Inst Superconducting & Elect Mat, Wollongong, NSW 2522, Australia
[2] Andong Natl Univ, Dept Mat Engn, Andong 760749, Gyungbuk, South Korea
来源：
ELECTROCHIMICA ACTA | 2004年 / 50卷 / 2-3期
关键词：
mesocarbon microbeads; micro-encapsulation; Sn-coating; lithium-ion battery;
D O I：
10.1016/j.electacta.2004.01.105
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Several Sn-coated MCMB (mesocarbon microbeads) graphite anode materials were prepared by microencapsulating nanosize Sn particles in MCMB. The nanosized tin particles are homogeneously dispersed in MCMB graphite matrix via electroless in situ chemical reduction. X-ray diffraction and EDS measurement confirms the presence of Sn in MCMB matrix. A systematic electrochemical testing has been performed on the Sn-coated MCMB graphite electrodes. The tin-coated MCMB graphite electrodes demonstrated an improvement in lithium storage capacity. The reaction process of lithium intercalation and de-intercalation in MCMB structure and lithium alloying with tin has been identified by cyclic voltammetry measurement. The micro-encapsulation of Sn in MCMB graphite can enhance the electrochemical properties of MCMB graphite anodes. (C) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码：517 / 522
页数：6
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