Electrochemical characteristics of new electric double layer capacitor with acidic polymer hydrogel electrolyte
Electrochemical characteristics of new electric double layer capacitor with acidic polymer hydrogel electrolyte
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DOI：
10.1016/j.jpowsour.2005.11.073
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发表时间：
2006-09-22
影响因子：
9.2
通讯作者：
Iwakura, Chiaki
中科院分区：
文献类型：
--
作者：
Wada, Hajime;Yoshikawa, Kumiko;Iwakura, Chiaki
以1M H2SO4水溶液、聚乙烯醇（PVA）和戊二醛（GA）为原料，制备了酸性聚合物水凝胶电解质。采用聚合物水凝胶电解质组装了一种新型双电层电容器，并对其电化学性能进行了研究。结果表明，采用聚合物水凝胶电解质的EDLC电池与采用1 M H2SO4水溶液作为电解质的EDLC电池表现出几乎相同的放电容量和高倍率放电能力。还发现，通过使用聚合物水凝胶电解质，自放电被显著抑制。(c)2005 Elsevier B.V.保留所有权利。
The acidic polymer hydrogel electrolyte was prepared from 1M H2SO4 aqueous solution, poly(vinyl alcohol) (PVA) and glutaraldehyde (GA). A new electric double layer capacitor (EDLC) with the polymer hydrogel electrolyte was assembled, and its electrochemical characteristics were investigated. As a result, the EDLC cell with the polymer hydrogel electrolyte exhibited almost the same discharge capacitance and high-rate dischargeability as that with a 1M H2SO4 aqueous solution as an electrolyte. It was also found that the self-discharge was remarkably suppressed by using the polymer hydrogel electrolyte. (c) 2005 Elsevier B.V. All rights reserved.