花生壳基活性炭的制备及其电化学性能研究

Preparation of peanut shell-based activated carbon and its electrochemical performance

以花生壳为碳源,氯化锌为活化剂制备了花生壳基活性炭材料。采用扫描电子显微镜(SEM)、比表面积及孔径分析仪和电化学工作站分别对材料的结构和电化学性能进行了测试。结果表明,所制得材料具有丰富的孔隙结构。随着活化剂比例的增加,活化程度加深,微孔比例减小,外部孔比例增加,比表面积可达1821m2/g;材料具有良好的储电性能,比电容可达325F/g。

Peanut shell-based activated carbon material was successfully prepared from peanut shell by ZnCl2 activated method.The structure of obtained material was studied by scanning electron microscopy（SEM）and a surface area and pore size analysis method.Electrochemical performance of material was evaluated by electrochemical workstation.Results showed that the material had abundant pore structure.With increasing the activator proportion,the activation degree increased,the micropores proportion decreased and external pores proportion increased.The Brunauer-Emmett-Teller specific surface area can be up to 1821m^2/g.Electrochemical tests showed that the material had good energy storage performance.The specific capacitance can be up to 325F/g.