期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 509, 期 9, 页码 3889-3893出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2010.12.151
关键词
Nickel oxide; Self-assembled film; Anode; Li-ion battery
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 500 nm. 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 400 mAhg (1) even after 50 cycles at 2 C, much higher than that of the dense NiO film prepared by eletrodeposition (198 mAhg(-1)). The high rate capability and reversibility of this NiO film can be attributed to its unique sandwich-like architecture. (C) 2010 Elsevier B. V. All rights reserved.
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