Synthesis of mesoporous ¦Á-Ni(OH)2 for high-performance supercapacitors
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- 作者：Shengtao Xing ; Qian Wang ; Zichuan Ma ; mazc@vip.163.com ; Yinsu Wu ; Yuanzhe Gao
- 关键词：Porous materials ; Electronic properties ; Nickel hydroxide ; Electrochemical supercapacitors
- 刊名：Materials Letters
- 出版年：2012
- 出版时间：1 July, 2012
- 年：2012
- 卷：78
- 期：Complete
- 页码：99-101
- 全文大小：478 K
文摘
Mesoporous ¦Á-Ni(OH)2 was synthesized by a facile method and investigated as an electrochemical pseudocapacitor material. Structural characterizations reveal that the mesoporous ¦Á-Ni(OH)2 has a narrow pore size distribution of 16 nm and a large surface area of 349 m2 g?#xA0;1. The ¦Á-Ni(OH)2 sample exhibits excellent electrochemical performance at different current densities and good cycling ability, which can be due to its mesoporous structure and large surface area. A maximum specific capacitance of 1718 F g?#xA0;1 can be achieved at a scan rate of 5 mV s?#xA0;1. These results indicate that the mesoporous ¦Á-Ni(OH)2 is a promising candidate for the supercapacitor electrodes.