过渡金属/活性炭电极的电容性能研究  

Study on electrochemical properties of transition metal/activated carbon electrodes for supercapacitor

作　　者：孟庆函[1] 刘玲[1] 宋怀河[2] 

机构地区：[1]北京化工大学新型高分子材料的制备与加工北京市重点实验室,北京100029 [2]北京化工大学可控化学反应科学与技术基础教育部重点实验室,北京100029

出　　处：《材料科学与工艺》2006年第2期193-196,共4页Materials Science and Technology

基　　金：中国博士后科学基金资助项目(2004036200);国家自然科学基金资助项目(50502004)

摘　　要：选用微孔和中孔活性炭采用浸渍法负载金属离子,考察在水性电解质中用于超级电容器的活性炭复合电极的电化学性能,探讨活性炭在负载前后的放电容量变化情况.采用低温氮吸附和直流恒流循环实验考察活性炭复合电极的孔结构及电容性能.研究表明:金属Cu、Mn具有比较明显的准电容效应,Co、N i可提高中孔活性炭的放电容量,而金属Mo、Fe和Y的准电容效应不显著;中孔活性炭负载金属的作用明显强于微孔活性炭;中孔活性炭负载金属Cu时,放电容量随负载量的增加而上升.Two activated carbons （AC） with different seven species of metals, which were used as electrode pore size distribution were selected to impregnate with materials of a supercapacitor in an aqueous electrolytic solution. The effect of loaded metals on the characterization of AC as polarizable electrodes was investigated. The porous structures and electrochemical double-layer capacitance of activated carbons were investigated using nitrogen gas adsorption and constant current cycling （CCC） methods. It was found that Cu and Mn had obvious pseudo-capacitance effect, and Co and Ni could improve the discharge capacitance of mesopore activated carbon, but Mo, Fe and Y had not contribution to discharge capacitance. The increased extent of the capacitance of mesopore activated carbon was higher than that of micropore activated carbon. The capacitances of Cu/mesopore activated carbon increased with the increase of the loaded weight of metal Cu.

关 键 词：活性炭 过渡金属 超级电容器 

分 类 号：TM53[电气工程—电器]