【摘要】 超大容量电容器亦称双电层电容器,具有比传统电容器高得多的能量密度和比电池高得多的功率密度。采用活性炭作电极活性物质,得到单体比容量为52F·g-1,并通过并联、串联组装出了电压为3V、容量为1000F左右的超大容量电容器,经过测试得其等效串联内阻(ESR)为56mΩ,等效漏电电阻约为170Ω,漏电电流为15mA。测试了双电层电容器的充放电性能、负载性能、漏电特性等,并对双电层电容器充放电和漏电过程进行了讨论。更多还原

【Abstract】 Supercapacitors,known as Double -Layer Capacitors,have higher energ y density than conventional capacitors and higher power density than batteries.Specific capacitance of 52F ·g -1 in a single cell was achieved In this work,by using activated carbon as ele ctrode material.Further -more,a 3V capacitor with the capacit ance of 1000F was prepared in series a nd parallel connec -tion.Its equivalent series resista nce(ESR)was measured to be 56mΩ,the equivalent leakage resistance and leakage current were170Ωand 15mA respectively.The performa nces of charge /discharge cycle,load and leakage we re also studied.Some discussion was made in the galvan -static charge /discharge and leak pr ocess.更多还原