分级多孔活性炭的KOH再活化法制备及其电化学性能  

Preparation and electrochemical performance of hierarchical porous activated carbon by KOH re-activation method

作　　者：孙靖 艾金贵 张津凤 杨树华 曹丙强[1] SUN Jing;AI Jingui;ZHANG Jinfeng;YANG Shuhua;CAO Bingqiang(School of Material Science and Engineering,University of Jinan,Jinan 250022,China)

机构地区：[1]济南大学材料科学与工程学院

出　　处：《中国粉体技术》2019年第6期56-61,共6页China Powder Science and Technology

基　　金：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

摘　　要：首先利用水热法以葡萄糖为碳源合成炭微球,然后采用KOH再活化法将炭微球制备成分级多孔活性炭,最后测试并表征其作为超级电容器电极材料的电化学性能。结果表明:KOH再活化法具有扩孔和再造孔的双重作用,可获得具有较高的比表面积、合适的分级多孔结构和良好的石墨化程度的分级多孔活性炭材料;在Na2SO4中性电解液中,在电流密度为1 A/g时,分级多孔活性炭材料的比电容可达209 F/g,表现出优异的电化学性能。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 Na2 SO4,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.

关 键 词：葡萄糖 炭微球 再活化 分级多孔活性炭 超级电容器 

分 类 号：TJ430.4[兵器科学与技术—火炮、自动武器与弹药工程]