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论文类型：期刊论文

发表时间：2014-10-20

发表刊物：ELECTROCHIMICA ACTA

收录刊物：SCIE、EI、Scopus

卷号：144

页面范围：376-382

ISSN号：0013-4686

关键字：Lithium-ion battery; Carbon nanotube; Direct current arc-discharge method; Cyclic voltammetry; Electrochemical impedance spectroscopy

摘要：Direct current (DC) arc-discharge method is used to fabricate Sn-carbon nanotube nanocapsules (Sn-CNT NCs). The Sn is partially-filled into multi-walled CNTs, as an ideal configuration for the active materials as lithium-ion battery anode; Sn nanoparticles provide large storage capacity and CNTs confine and accommodate the volume expansion of Sn as well as provide the conductive network and contribute their own capacity. Large initial specific capacity and stable cyclic performance are identified in the electrochemical tests. Such novel nanostructure provides a solution to the volume expansion issue of a high-capacity electrode. (C) 2014 Elsevier Ltd. All rights reserved.