无机材料学报

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新型氧化镍超电容器电极材料的研究

王晓峰; 孔祥华   

  1. 北京科技大学固体电解质研究室 北京 100083
  • 收稿日期:2000-08-15 修回日期:2000-09-26 出版日期:2001-09-20 网络出版日期:2001-09-20

Research on New Type NiOx/KOH/C Supercapacitor

WANG Xiao-Feng; KONG Xiang-Hua   

  1. State Support Laboratory on Solid Electrolytes and Metallurgical Testing Techniques; University of Sci- ence & Technology Beijing; Beijing 100083; China
  • Received:2000-08-15 Revised:2000-09-26 Published:2001-09-20 Online:2001-09-20

摘要: 使用传统的水解方法制备了氢氧化镍胶体,在300℃下进行热处理后得到具有特殊材料微结构以及表面特性的超细氧化镍材料,电化学方法证明该材料制备的电极具有典型的电容性能,“准电容”比容量达到240F/g以上,优于普通的双电层电容器活性炭电容材料比容量,本文首次提出了电容器的正负极采用不同材料的新技术,有效的解决了电容器工作电位范围相对较窄的不足,并且明显的改善了电容器的大功率放电特性,是一种极具有发展潜力的储能器件.

关键词: 氧化镍, 电化学电容, 超电容, 准电容

Abstract: orous nickel oxides were prepared by hydrolysis and furtherheat treatment of nickel acetate in air at 300℃. An new type electrochemical capacitor system with
an asymmetric configuration was demonstrated. The nickel oxides prepared and active carbon wereapplied to the positive and negative electrodes respectively. These oxides can provide a specific capacitance of
240F/g, and maintain high utilization at high rates of discharge (i.e., high power density).The maximum operational voltage of the capacitor can be improved effectively and high power discharge attained.

Key words: nickel oxide, active carbon, electrochemical capacitor, supercapacitor, pseudocapci- tiance

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