调节正负极质量比提高电容器比能量  

Enhance the specific energy of EDLC by regulating cathode/anode mass ratio

作　　者：于丹娜[1] 张浩[2] 张世超[1] 曹高萍[2] 

机构地区：[1]北京航空航天大学,北京100083 [2]防化研究院,北京100083

出　　处：《电池》2007年第3期165-167,共3页Battery Bimonthly

基　　金：国家自然科学基金重点项目(20633040)

摘　　要：以活性炭为电极材料组装有机体系电化学双电层电容器（EDLC）,探讨了正、负极质量比对有机体系EDLC电容性能的影响.在LiPF6/EC＋DMC电解液中,活性炭正极的比电容与负极相同,但工作电位窗口小于负极,放电比容量低于负极.当m（正极）：m（负极）=1.8：1.0时,电容器可在0～3.0 V内稳定工作,比能量达36.8 Wh/kg,比正、负极质量相等的EDLC的比能量高48%.Activated carbon was used as electrode material to assemble organic system electrochemical double layer capacitor （EDLC）, the influences of cathode/anode mass ratio on the capacitor performance of organic system EDLC were investigated. In the electrolyte of LiPF6/EC ＋ DMC, the specific capacitance of activated carbon cathode was equal to that of anode, but working potential window was narrower than that of anode, thus the discharge specific capacity was lower than that of anode. When m （cathode） ： re（anode） = 1.8：1.0, the capacitor could work stably at 0 - 3.0 V, the specific energy was 36.8 Wh/kg, which was 48% higher than that of the EDLC with re（cathode） ： re（anode） = 1.0：1.0.

关 键 词：电化学双电层电容器(EDLC) 活性炭 有机电解液 

分 类 号：TM531[电气工程—电器]