Study on Electrochemical Properties of Starch-Based Biochar Materials Prepared by Molten Salt Method
The mixed salt of KCl and NaCl was used to carbonize and activate the starch precursor in molten state,and it was modified by muffle furnace in air atmosphere,which saved a lot of inert gas.The fused salt formed a hierarchical pore structure on the surface of the material through etching effect.The high specific surface area and abundant pore structure could improve the electrochemical performance of activated carbon.At the current density of 0.5A·g-1,the capacity of CMS-3 was 230 F·g-1.The assembled symmetrical capacitor had the current density of 0.5 A·g-1 and the specific capacitance of the symmetrical device was 155 F·g-1,showing good electrochemical performance.In addition,CMS-3 showed excellent cycle life,with a high volume retention rate of 99.4%after 10 000 cycles.
StarchMolten salt processSupercapacitorPorous carbon
万方数据
维普
