期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 589, 期 -, 页码 82-87出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2013.11.176
关键词
Nickel oxide; Electrode material; Flower-like morphology; Specific capacitance
资金
- Tongji University Research Foundation [1380219039]
NiO electrode material was prepared by a facile and environment-friendly hydrothermal method combined with subsequent calcination. The prepared samples were characterized by SEM, XRD and nitrogen adsorption. The electrochemical performances were investigated by cyclic voltammetry (CV), galvanostatic charge-discharge and cycle life. The condition of synthesis on the electrochemical performance of NiO was studied. The results show that the prepared NiO is a nanosize material with a special morphology of flower-like microspheres. It has a high specific capacitance of 762 F g(-1) at 1 A g(-1) and 598 F g(-1) at high discharge current density of 10 A g(-1). Furthermore, it exhibits an outstanding cycling performance and stability reflected by a high capacitive retention of 96% after the subsequent 1000 cycles at a high current density of 15 A g(-1). (C) 2013 Elsevier B. V. All rights reserved.
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