Assembly of Tin Oxide/Graphene Nanosheets into 3D Hierarchical Frameworks for High-Performance Lithium Storage

被引：92

作者：

Huang, Yanshan ^{[1
]}

Wu, Dongqing ^{[1
]}

Han, Sheng ^{[1
]}

Li, Shuang ^{[1
]}

Xiao, Li ^{[1
]}

Zhang, Fan ^{[1
]}

Feng, Xinliang ^{[1
,2
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Chem & Chem Engn, Shanghai 200240, Peoples R China

[2] Max Planck Inst Polymer Res, D-55128 Mainz, Germany

来源：

CHEMSUSCHEM | 2013年 / 6卷 / 08期

关键词：

electrochemistry; graphene; mesoporous materials; nanoparticles; tin; GRAPHENE NANOSHEETS; REDUCED GRAPHENE; COAXIAL NANOCABLES; CYCLE PERFORMANCE; ANODE MATERIAL; SNO2; OXIDE; NANOPARTICLES; CARBON; NANOCOMPOSITES;

D O I：

10.1002/cssc.201300109

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

3D hierarchical tin oxide/graphene frameworks (SnO2/GFs) were built up by the insitu synthesis of 2D SnO2/graphene nanosheets followed by hydrothermal assembly. These SnO2/GFs exhibited a 3D hierarchical porous architecture with mesopores (approximate to 3nm), macropores (3-6m), and a large surface area (244m(2)g(-1)), which not only effectively prevented the agglomeration of SnO2 nanoparticles, but also facilitated fast ion and electron transport in 3D pathways. As a consequence, the SnO2/GFs exhibited a high capacity of 830mAhg(-1) for up to 70 charge-discharge cycles at 100mAg(-1). Even at a high current density of 500mAg(-1), a reversible capacity of 621mAhg(-1) could be maintained for SnO2/GFs with excellent cycling stability. Such performance is superior to that of previously reported SnO2/graphene and other SnO2/carbon composites with similar weight contents of SnO2.

引用

页码：1510 / 1515

页数：6

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