高比表面积活性炭电极的电化学性能研究  

STUDY ON THE ELECTROCHEMICAL CHARACTERIZATION OF HIGH SURFACE AREA ACTIVATED CARBON ELECTRODES FOR ELECTRIC DOUBLE-LARYER CAPACITORS

作　　者：孟庆函[1] 李宝华[1] 李开喜[1] 吕春祥[1] 凌立成[1] 

机构地区：[1]中国科学院山西煤炭化学研究所煤转化国家重点实验室

出　　处：《煤炭转化》2001年第4期75-79,共5页Coal Conversion

基　　金：中国科学院院长青年创新基金资助项目;山西省青年基金资助项目;太原市科委资助项目.

摘　　要：选用比表面积为２５９０ｍ２／ｇ的石油焦基活性炭作为双电层电容器的炭电极材料，用直流恒流循环实验考察双电层电容器在不同充放电条件下的电化学性能．实验发现，活性炭电极具有良好的循环充放电性能，充放电效率高达９７％，远高于普通电池．不同充放电电流有不同的充放电容量，恒流１ｍＡ充放电容量大于２ｍＡ和５ｍＡ时的充放电容量．活性炭的比电容为６０Ｆ／ｇ，且电化学性能稳定，有良好的应用前景．The activated carbon(AC) with BET surface area 2 590 m2/g obtained from petroleum coke was used as the electrode materials for the electric double layer capacitors (EDLC)in an aqueous electrolytic solution. The electrochemical characterization and the double-layer capacitance of AC were investigated using constant current cycling (CCC) methods. It was found that AC electrodes had excellent charge-discharge properties and the efficiency is 97% after 20 cycles which much higher than that of the conventional battery. The EDLC had the different charge-discharge capacities with the different currents and the capacity with 1 mA current was larger than the capacity of 2 and 5 mA. The leakage current and constant power test had also been investigated to prove that AC electrodes had the good application performance.

关 键 词：双电层电容器 活性炭 电化学性能 高比表面积 电极 

分 类 号：TQ424.1[化学工程] TM53[电气工程—电器]