Synthesis and Lithium Storage Properties of Hollow Fe2O3/Graphene Nanocomposites

被引：0
|
作者：
Zou Qiong [1 ]
Zai Jian-Tao [1 ]
Liu Ping [1 ]
Qian Xue-Feng [1 ]
机构：
[1] Shanghai Jiao Tong Univ, Natl Key Lab Metall Matrix Composite Mat, Sch Chem & Chem Engn, Shanghai 200240, Peoples R China
来源：
CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE | 2011年 / 32卷 / 03期
关键词：
Fe2O3/GNS nanocomposite; Lithium-ion battery; Graphene; Hollow material; REVERSIBLE CAPACITY; ANODE MATERIAL; ION BATTERIES; GRAPHENE; OXIDE; SHEETS;
D O I：
暂无
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Hollow Fe2O3/graphene nanocomposites were synthesized by a hydrothermal method, and they were characterized by XRD and SEM. A plausible formation mechanism for the nanocomposites could be based on the catalytic oxidation of carboxyl groups of graphite oxide(GO) in the presence of Fe3+ ions to form graphene nanosheets(GNS), and the released CO2 provided templates for the formation of hollow Fe2O3, and then hollow Fe2O3/graphene nanocomposites were formed in-situ. The obtained nanocomposites show excellent Li storage performances. After 50 cycles, a capacity of 520 mA . h/g(437 mA . h/g) was kept at a high current density of 200 mA/g(400 mA/g).
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页码：630 / 634
页数：5
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