1. Self-assembled sandwich-like NiO film and its application for Li-ion batteries
- Author
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Zhong, J., Wang, X.L., Xia, X.H., Gu, C.D., Xiang, J.Y., Zhang, J., and Tu, J.P.
- Subjects
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MOLECULAR self-assembly , *SANDWICH construction (Materials) , *LITHIUM-ion batteries , *INORGANIC synthesis , *METALLIC oxides , *ANODES , *THIN films , *AMMONIA , *CHEMICAL processes - Abstract
Abstract: NiO film with sandwich-like morphology is fabricated on nickel foam by a simple ammonia-evaporation process. Ammonia plays a major role in controlling the final geometry during this template- and surfactant-free synthesis. The obtained NiO film is constructed by regular triangular prisms with side length of 500nm. Each triangular prism is self-assembled by single crystalline platelets. As an anode for lithium ion battery, this NiO film electrode exhibits high discharge capacity and excellent cycling performance. The reversible capacity of the sandwich-like NiO film sustains 400mAhg−1 even after 50 cycles at 2C, much higher than that of the dense NiO film prepared by eletrodeposition (198mAhg−1). The high rate capability and reversibility of this NiO film can be attributed to its unique sandwich-like architecture. [Copyright &y& Elsevier]
- Published
- 2011
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