High energy and high power density electrochemical capacitors

被引：256

作者：

Zheng, JP

Jow, TR

机构：

[1] Army Research Laboratories, Electronics and Pwr. Sources Dept., Fort Monmouth

来源：

JOURNAL OF POWER SOURCES | 1996年 / 62卷 / 02期

关键词：

capacitors; ruthenium; energy density;

D O I：

10.1016/S0378-7753(96)02424-X

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

High energy density electrochemical capacitors were built with a newly discovered electrode material (amorphous RuO2 . xH(2)O). Energy densities as high as 96 J/g (26 Wh/kg) were obtained based on the RuO2 . xH(2)O electrode material alone. However, the power density of the capacitor is low. By mixing RuO2 . xH(2)O powders with about 20% weight of carbon black, power densities greater than 10 kW/kg could be achieved at a delivered energy density of about 72 J/g (20 Wh/kg). Capacitance as a function of cycle life was studied for up to 60 000 cycles. The temperature dependence of capacitance and resistance of the capacitor are also reported in this paper.

引用

页码：155 / 159

页数：5

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