Activated Carbon Prepared from Lignite as Supercapacitor Electrode Materials

作者：Li, Lijun; Wang, Xiaoyan; Wang, Shujuan; Cao, Zhenzhu; Wu, Zhaojun; Wang, Hong; Gao, Yanfang^*; Liu, Jinrong

来源：Electroanalysis, 2016, 28(1): 243-248.

DOI：10.1002/elan.201500532

• Supercapacitor
• Lignite
• Zinc chloride
• Activated carbon

Activated carbon derived from lignite is investigated as the active electrode material in supercapacitors. ZnCl2 was used as excitation agent during preparation process. XRD, BET, SEM and electrochemical performance testing carried out to characterize the structure and properties of activated carbon. Electrochemical investigations indicate that the activated carbon (AC-650 degrees) shows the maximum specific capacitance of 207.5Fg(-1) in 6M KOH electrolytes at 0.5Ag(-1). The activated carbon presents good cycle stability during 3,000 cycles at a fair current density of 5Ag(-1) and capacity rate can reach 91%, because of its specific surface area of 1024m(2)g(-1).

• 出版日期2016-1
• 单位内蒙古工业大学