An ionic self-assembly approach towards sandwich-like graphene/SnO2/graphene nanosheets for enhanced lithium storage

被引：9

作者：

Wang, Jinzuan ^{[1
]}

Liu, Ping ^{[2
]}

Huang, Yanshan ^{[2
]}

Jiang, Jianzhong ^{[1
]}

Han, Sheng ^{[1
]}

Wu, Dongqing ^{[1
,2
]}

Feng, Xinliang ^{[2
,3
]}

机构：

[1] Shanghai Inst Technol, Sch Chem & Environm Engn, Shanghai 201418, Peoples R China

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

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

来源：

RSC ADVANCES | 2014年 / 4卷 / 101期

关键词：

ANODE MATERIAL; ELECTROCHEMICAL LITHIATION; NANOSTRUCTURED MATERIALS; GRAPHENE NANOSHEETS; ENERGY-CONVERSION; AMORPHOUS OXIDE; SNO2; NANOWIRE; PERFORMANCE; CAPACITY; NANOPARTICLES;

D O I：

10.1039/c4ra10573g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Two-dimensional graphene/SnO2/graphene (G/SnO2/G) hybrids with SnO2 nanoparticles sandwiched in graphene sheets have been constructed by a facile ionic self-assembly process. The resulting G/SnO2/G hybrids possessed flexible and ultrathin graphene shells that effectively enwrapped the SnO2 nanoparticles. When the hybrids were used as the anode materials in lithium-ion batteries (LIBs), their unique core-shell architecture provided double protection against the aggregation and volume changes of SnO2 nanoparticles, and ensured favorable transport kinetics for charge carriers. As a result, the hybrids exhibited a superior cycling stability (600 mA h g(-1) over 60 cycles) and excellent rate capability (120 mA h g(-1) at 5.0 A g(-1)).

引用

页码：57869 / 57874

页数：6

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