氢氧化镍—炭复合超级电容器的研究

Study on the hybrid supercapacitor based on Ni(OH)_2/activated carbon

用化学沉淀法制备出Ni(OH)2,以Ni(OH)2 和活性炭为正负极组成复合超级电容器。用循环伏安法和恒流充放电实验研究了电极的电化学性能和容量性质。恒流充放电实验表明,该复合超级电容器具有良好的充放电性能及循环寿命,在 6mol·L-1 KOH电解液中的最大比容量可达 450F·g-1。

A hybrid supercapacitor was fabricated using a Ni(OH)_2 positive electrode and a activated carbon negative electrode, Ni(OH)_2 prepared by chemical precipitation method. The electrochemical properties of electrodes and the capacitive behavior of the resulting supercapacitor were studied by cyclic voltammetry and constant current charge—discharge tests. The results show that the hybrid supercapacitor has good charge—discharge and cycling performance. Maximum specific capacitance of 450F·g^(-1) was obtained in 6mol·L^(-1) KOH electrolyte.