Controllable preparation of Co3O4 nanosheets and their electrochemical performance for Li-ion batteries

被引:36
作者
Hao, Qin [1 ]
Li, Menghua [2 ]
Jia, Suzhen [1 ]
Zhao, Xiaoyun [1 ]
Xu, Caixia [1 ]
机构
[1] Univ Jinan, Sch Chem & Chem Engn, Key Lab Chem Sensing & Anal Univ Shandong, Jinan 250022, Shandong, Peoples R China
[2] Qilu Normal Univ, Dept Chem, Jinan 250011, Shandong, Peoples R China
基金
美国国家科学基金会;
关键词
THIN-FILMS; LITHIUM; ANODES; CARBON; NANOTUBES;
D O I
10.1039/c3ra23448g
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Co3O4 nanosheets were prepared by selectively dealloying CoAl alloys at room temperature, and their thicknesses could be easily controlled to be similar to 6 nm, similar to 100 nm and similar to 500 nm. Then they were employed as anodes for lithium-ion batteries to study the electrochemical performance as a function of the thickness of the nanosheets. The results showed that the thinner they were, the better performance they presented, especially at high current density. Thereinto, the obtained similar to 6 nm-thick Co3O4 sheets demonstrated an initial capacity of 1259.5 mA h g(-1) as well as an excellent capacity stability.
引用
收藏
页码:7850 / 7854
页数:5
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