期刊
ELECTROCHIMICA ACTA
卷 76, 期 -, 页码 145-151出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2012.04.127
关键词
NiO-NiS; Thin film; Rechargeable lithium batteries; Pulsed laser deposition
资金
- 973 Program of China [2011CB933300]
- Science & Technology Commission of Shanghai Municipality [08DZ2270500, 11JC1400500]
NiO, NiS and NiO-NiS nanocomposite thin films have been successfully fabricated by pulsed laser deposition. Their electrochemical properties are evaluated by galvanostsic cycling and cyclic voltammograms. Compared with NiO and NiS thin films, NiO-NiS nanocomposite thin film shows an improved electrochemical performance with a reversible specific capacity around 500 mAh g(-1) and good cyclability. Scanning electron microscopy, high-resolution transmission electron microscopy and selected area electron diffraction measurements are employed to study the electrochemical reaction mechanism of NiO-NiS nanocomposite electrode. These results reveal that NiO and NiS in the mixture films react with lithium separately and could be reversibly reproduced. (C) 2012 Elsevier Ltd. All rights reserved.
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