期刊
SCIENTIFIC REPORTS
卷 4, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/srep03669
关键词
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资金
- 100 Talents Program of The Chinese Academy of Sciences
- National Program on Key Basic Research Project of China [2012CB215500]
- National Natural Science Foundation of China [21101147, 21203176]
- China Postdoctoral Science Foundation [2011M500624]
- Special Foundation of China Postdoctoral Science [2012T50293]
Supercapacitors, as one of alternative energy devices, have been characterized by the rapid rate of charging and discharging, and high power density. But they are now challenged to achieve their potential energy density that is related to specific capacitance. Thus it is extremely important to make such materials with high specific capacitances. In this report, we have gained homogenous Ni(OH)(2) on graphene by efficiently using of a facile and effective electrostatic induced stretch growth method. The electrostatic interaction triggers advantageous change in morphology and the ordered stacking of Ni(OH)(2) nanosheets on graphene also enhances the crystallization of Ni(OH)(2). When the as-prepared Ni(OH)(2)/graphene composite is applied to supercapacitors, they show superior electrochemical properties including high specific capacitance (1503 F g(-1) at 2 mV s(-1)) and excellent cycling stability up to 6000 cycles even at a high scan rate of 50 mV s(-1).
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