Synthesis of Co2SnO4 hollow cubes encapsulated in graphene as high capacity anode materials for lithium-ion batteries

被引：68
|
作者：
Zhang, Jingjing [1 ,2 ]
Liang, Jianwen [1 ,2 ]
Zhu, Yongchun [1 ,2 ]
Wei, Denghu [1 ,2 ]
Fan, Long [1 ,2 ]
Qian, Yitai [1 ,2 ,3 ]
机构：
[1] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Peoples R China
[2] Univ Sci & Technol China, Dept Chem, Hefei 230026, Peoples R China
[3] Shandong Univ, Sch Chem & Chem Engn, Jinan 250100, Peoples R China
来源：
JOURNAL OF MATERIALS CHEMISTRY A | 2014年 / 2卷 / 08期
关键词：
HYDROTHERMAL SYNTHESIS; NEGATIVE-ELECTRODE; MIXED OXIDES; STORAGE; NANOCRYSTALS; NANOSTRUCTURES; NANOPARTICLES; NANOBOXES; SPINEL;
D O I：
10.1039/c3ta13228e
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：
A Co2SnO4 hollow cube/graphene composite (Co2SnO4 HC@rGO) was synthesized by pyrolysis-induced transformation from the hydrothermally synthesized hollow cubic precursor and subsequent combination with graphene sheets via the analogous mechanism of electrostatic interactions. The Co2SnO4 HCs with a size of 240 nm and the shell of 50-70 nm thickness were uniformly encapsulated in the graphene sheets. As an anode material for lithium-ion batteries, the Co2SnO4 HC@rGO exhibited significantly enhanced cyclability and superior rate capability compared to the pure Co2SnO4 counterpart. Even after 100 cycles, it still delivered a capacity over 1000 mA h g(-1) at 100 mA g(-1).
引用
收藏
页码：2728 / 2734
页数：7
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