煤基活性炭的制备及其作为超级电容器电极材料的研究  

Preparation and Research of Coal-based Active Carbon as a Supercapacitor Electrode Material

作　　者：张高峰[1] 张治国[2] 高艳芳[2] 刘进荣[2] 

机构地区：[1]内蒙古科技大学包头师范学院,包头014030 [2]内蒙古工业大学化工学院,呼和浩特010051

出　　处：《内蒙古工业大学学报（自然科学版）》2014年第4期273-277,共5页Journal of Inner Mongolia University of Technology：Natural Science Edition

基　　金：国家自然科学基金(21266018/B060901)

摘　　要：本文选用NaOH与KOH为活化剂,通过化学活化法制备煤基活性炭,分析了活化剂对活性炭电化学性能的影响。通过XRD分析可知,自制活性炭属于无定型炭。从电化学性能图分析,部分活性炭具有明显的氧化还原峰,能够提供较高的赝电容,电化学性能较好。NaOH:KOH:煤=2∶2∶1样品随着电流密度的增大,比电容衰减较小,电容保持率高,电化学性能优异。By selecting NaOH and KOH as chemical activators to prepare coal-based activated carbon,this paper analyzed the electrochemical performance of the activated carbon with different proportion of quality activator.The XRD pattern showed that the self-made activated carbon belongs to the amorphous carbon.The electrochemical performance chart shows that part of the activated carbon has obvious redox peak,capable of providing a higher pseudo capacitance as depicted.The electrochemical performance is better for a sample of the composition of NaOH∶KOH∶coal=2∶2∶1.With the increase of current density,the specific capacitance attenuates,and high capacitance retention is maintanined.

关 键 词：超级电容器 煤基活性炭 NAOH KOH 

分 类 号：TQ15[化学工程—电化学工业]