使用化学刻蚀镍集流体的EDLC的性能  

The performance of EDLC using chemical etched nickel foil current collector

作　　者：王力臻[1,2] 方华[1] 谷书华[1] 张林森[1] 

机构地区：[1]郑州轻工业学院材料与化学工程学院,河南郑州450002 [2]河南省表界面重点实验室,河南郑州450002

出　　处：《电池》2010年第6期317-319,共3页Battery Bimonthly

基　　金：河南省科技攻关项目子项目(062421004)

摘　　要：在70℃下用95 g/L(NH4)2S2O8+0.3 g/L OP-10+3%H2SO4+15 g/L Ni2SO4的溶液对镍箔集流体进行化学刻蚀,研究了化学刻蚀对电化学双电层电容器(EDLC)电化学性能的影响。化学刻蚀提高了镍箔集流体的表面粗糙度,与未刻蚀时相比,电极的等效串联内阻由2.11Ω降至0.88Ω。以0.2 A/g的电流在0.05～1.00 V循环,活性炭的单极比电容为163.0 F/g,比未刻蚀时提高50.9%,循环200次的电容保持率为91.3%;当电流增加至6.0 A/g时,比电容为127.8 F/g。Nickel foil current collector was chemical etched with the solution of 95 g/L（NH4）2S2O8＋0.3 g/L OP-10＋3% H2SO4＋15 g/L Ni2SO4 at 70 ℃,the effects of chemical etching on the electrochemical performance of electrochemical double layer capacitor（EDLC） was studied.Chemical etching increased the surface roughness of the nickel foil.Compared with unetched one,the equivalent series resistance of the electrode reduced from 2.11 Ω to 0.88 Ω.When cycled at the current 0.2 A/g in 0.05～1.00 V,the single electrode specific capacitance of active carbon was 163.0 F/g,increased 50.9% than the unetched one,the capacitance retention rate was 91.3% after 200 cycles.As the current increased to 6.0 A/g,the specific capacitance was 127.8 F/g.

关 键 词：集流体 化学刻蚀 等效串联内阻(ESR) 功率性能 

分 类 号：TM533[电气工程—电器]