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中文摘要：
采用Ni（OH）2和比表面积为1114 m^2/g的活性炭分别作正、负电极材料,不对称电化学电容器（67 mm×20 mm×170 mm）在0.24 A/s的放电速率下,电容量达14000 F,6000次反复充放电的容量衰减为9.4%,72 h后的自放电为17%。分析表明：高比表面积活性炭的表面化学性质、杂质含量以及测试温度都将影响不对称电化学电容器的容量稳定性。
英文摘要：
Electrochemical capacitor with 67 mm length, 20 mm width and 170 mm height, was assembled with asymmetry electrode, in which Ni（OH）2 and activated carbon was used as the anode and cathode electrode materials, respectively. High capacitance was given of 14 000 F with the high discharge velocity of 0.24 A/s if activated carbon with the specific surface area of 1 114 m^2/g was chosen. Moreover, its capacitance would keep high and decrease only 9.4 % even if it was charged and discharged repeatedly from 1.6 to 0.8 V for 6 000 times, and its voltage still could keep 1.33 V after self-discharged for 72 h. The results indicate that the surface chemical groups and impurities of activated carbon, as well as the measurement temperature, will effect the capacitance stability of asymmetry electrochemical capacitor.
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