微波法中用NaOH和KOH改性活性炭的电化学性能的比较  

Comparison between Electrochemical Performances of NaOH-and KOH-Activated Carbons of Microwave Method

作　　者：钟欣[1] 吴季怀[1] 范乐庆[1] 许开卿[1] 黄妙良[1] 

机构地区：[1]华侨大学材料物理化学研究所,泉州326021

出　　处：《材料导报》2011年第22期104-106,共3页Materials Reports

基　　金：国家863项目(2009AA03Z217);国家自然科学基金重大研究计划(90922028)

摘　　要：通过微波法,以KOH、NaOH为活化剂,分别按照不同的比例对活性炭进行改性。对改性后的活性炭进行循环伏安、恒流充放电、交流阻抗等电化学性能的测试。结果表明,两组活性炭的质量比电容均随着活化剂用量的增加先增加后减小,电阻均随着活化剂用量的增加而增加。相比KOH而言,NaOH改性的活性碳质量比电容更大,电阻更小,有更好的电化学性能。Activated carbons（AC） were obtained by microwave-assisted activation using KOH and NaOH as actvation agent with different activation agent/carbon ratio. The electrochemical performances of the AC were tested with cyclic voltammetry, galvanostatic charge-discharge and electrochemical impedancespectroscopy. The resules show that the specific capacitance of two series first increase, then decreases as the activation agent/carbon ratio increases, and the resistance is increases. Compared with KOH, the AC of actvation with NaOH has higher specific capacitance and lower resistance.

关 键 词：超级电容器 化学改性 微波 

分 类 号：TM533[电气工程—电器]