期刊
ELECTROCHIMICA ACTA
卷 186, 期 -, 页码 142-150出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2015.10.169
关键词
Graphene wrapped multiwalled carbon; nanotubes; wrinkles; defect sites; anode material; Li ion battery
A 1-D monohybrid of multiwalled carbon nanotubes and graphene sheets, graphene wrapped multiwalled carbon nanotubes (gC) structure, synthesized in a template-free simple chemical vapor deposition technique without any chemical functionalization, was employed as efficient anode material for Li ion battery. Graphene nanosheets affixed to the multiwalled carbon nanotubes (MWNTs) surface by van der Waal's attraction gives a wrinkled surface to the final 1-D gC configuration. The protrusions on the surface of the tube enhances the porosity of the system and also acts as defects, enhancing lithium adsorption sites while the inner MWNT core gives high electrical conductivity, resulting enhanced electrochemical performance of 373 mAh g(-1) at 100 mA g(-1) current density after 150 cycles. (C) 2015 Elsevier Ltd. All rights reserved.
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