SUN Jing，AI Jingui，ZHANG Jinfeng，YANG Shuhua，CAO Bingqiang

(School of Material Science and Engineering, University of Jinan, Jinan 250022，China)

Abstract: Carbon microspheres were firstly synthesized using glucose as carbon source by hydrothermal method, and then activated carbon microspheres were prepared into hierarchical porous activated carbon by KOH re-activation method. Finally, the electrochemical properties of hierarchical porous activated carbons as super-capacitor electrode material were tested and characterized. The results show that the KOH re-activation method has the dual functions of expanding and reconstructing holes, and the hierarchical porous activated carbon materials with high specific surface area, suitable hierarchical porous structure and good graphitization degree can be obtained. In the neutral electrolyte Na2SO4, the specific capacitance of hierarchical porous activated carbon material can reache 209 F/g at the current density of 1 A/g, indicating excellent electrochemical performance.

Keywords: glucose; carbon microsphere; re-activation; hierarchical porous activated carbon; super-capacitor

中图分类号：TJ430.4                             文献标志码：A

文章编号：1008-5548(2019)06-0056-06

DOI:10.13732/j.issn.1008-5548.2019.06.010

收稿日期： 2019-05-27， 修回日期：2019-07-08，在线出版时间：2019-09-29 13:27。

基金项目：国家自然科学基金项目，编号：51702123；山东省自然科学基金项目，编号：ZR2017ZB0315。

第一作者简介：孙靖(1992—)，女，硕士研究生，研究方向为新能源材料与器件。E-mail：934103645@qq.com。

通信作者简介：

杨树华(1986—)，男，博士，副教授，硕士生导师，研究方向为新能源材料与器件。E-mail：yangshuhua78@163.com。

曹丙强(1978—)，男，博士，教授，博士生导师，研究方向为新能源材料与器件。E-mail：mse_caobq@ujn.edu.cn。