Hybrid capacitor with activated carbon electrode, Ni(OH)2 electrode and polymer hydrogel electrolyte
Hybrid capacitor with activated carbon electrode, Ni(OH)2 electrode and polymer hydrogel electrolyte
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DOI：
10.1016/j.jpowsour.2005.07.024
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发表时间：
2006-06
影响因子：
9.2
通讯作者：
S. Nohara;T. Asahina;Hajime Wada;N. Furukawa;H. Inoue;N. Sugoh;H. Iwasaki;C. Iwakura
中科院分区：
文献类型：
--
作者：
S. Nohara;T. Asahina;Hajime Wada;N. Furukawa;H. Inoue;N. Sugoh;H. Iwasaki;C. Iwakura
以活性炭（AC）为负极，Ni（OH）2为正极，以交联聚丙烯酸钾（PAAK）和KOH水溶液为电解质，组装了一种新型的混合电容器（HC）电池。HC电池的特征在于与使用两个AC电极和聚合物水凝胶电解质的双电层电容器（EDLC）相比。发现HC电池成功地工作在更大的电压范围内，并且表现出约100V的电压。2.4比EDLC单元的电容高10倍。HC电池的高倍率放电能力也上级EDLC电池。这些改进的特性强烈表明HC电池可以是具有高能量和功率密度的有前途的电容器系统。
A new hybrid capacitor (HC) cell was assembled using an activated carbon (AC) negative electrode, an Ni(OH)2positive electrode and a polymer hydrogel electrolyte prepared from crosslinked potassium poly(acrylate) (PAAK) and KOH aqueous solution. The HC cell was characterized compared with an electric double layer capacitor (EDLC) using two AC electrodes and the polymer hydrogel electrolyte. It was found that the HC cell successfully worked in the larger voltage range and exhibited ca. 2.4 times higher capacitance than the EDLC cell. High-rate dischargeability of the HC cell was also superior to that of the EDLC cell. These improved characteristics strongly suggest that the HC cell can be a promising system of capacitors with high energy and power densities.