Chemical-free synthesis of graphene-carbon nanotube hybrid materials for reversible lithium storage in lithium-ion batteries

被引:96
作者
Chen, Shuangqiang [1 ]
Yeoh, Waikong [2 ]
Liu, Qi [3 ]
Wang, Guoxiu [1 ]
机构
[1] Univ Technol Sydney, Sch Chem & Forens Sci, Ctr Clean Energy Technol, Sydney, NSW 2007, Australia
[2] Univ Sydney, Australian Ctr Microscopy & Microanal, Sydney, NSW 2006, Australia
[3] Changzhou Univ, Sch Petrochem Engn, Changzhou 213164, Jiangsu, Peoples R China
基金
澳大利亚研究理事会;
关键词
ORGANIC-SOLVENT DISPERSIONS; RAMAN-SPECTROSCOPY; WATER; FILMS; OXIDE; ORIENTATION; SILYLATION; MEMBRANES; RELEASE; ROUTE;
D O I
10.1016/j.carbon.2012.05.040
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Graphene-carbon nanotube hybrid materials were successfully prepared through the pi-pi interaction without using any chemical reagent. We found that the ratio between carbon nanotube and graphene had critical influences on the state in aqueous solution and morphology of hybrid materials. Field emission scanning electron microscope and transmission electron microscope analysis confirmed that graphene nanosheets wrap around individual carbon nanotubes and form a homogeneous three-dimensional hybrid nano-structure. When applied as an anode material in lithium ion batteries, graphene-carbon nanotube hybrid materials demonstrated a high reversible lithium storage capacity, a high Coulombic efficiency and an excellent cyclability. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码:4557 / 4565
页数:9
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