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Indexed by:期刊论文

Date of Publication:2014-10-20

Journal:ELECTROCHIMICA ACTA

Included Journals:SCIE、EI、Scopus

Volume:144

Page Number:376-382

ISSN No.:0013-4686

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

Abstract: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.