期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 114, 期 1, 页码 251-255出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp909014w
关键词
-
资金
- 973 Program [2009CB220100]
- China-U.S. Center for Environmental Remediation and Sustainable Development in China
Two-dimensional (21)) nanoshects directly grew into three-dimensional (3D) microspheres through a one-step solvothermal route under controlled conditions; during this procedure the decomposition of hexamethylenetetramine at temperatures higher than 120 degrees C provided OH- at the rate of good diffusion, and surfactants were used as templates to provide the growth sites and control the crystalline growth direction. By means of the Ostwald ripening process, precursor microspheres formed with narrowly distributed diameters, and then NiO 3D microspheres were obtained with further calcination at 300 degrees C for 2 h. NiO microspheres presented a high initial discharge capacity as anode materials in Li ion batteries, but degraded quickly during subsequent cycles, and further improvement in cyclic stability is still needed for practical application in Li ion batteries.
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