水热法二次活化超级电容器用活性炭研究  

Reactivation of activated carbon for supercapacitor under hydrothermal conditions

作　　者：何铁石[1,2] 杜微[1] 郭中台 蔡克迪[1,2] 金振兴[1,2] 

机构地区：[1]渤海大学化学化工与食品安全学院,辽宁锦州121013 [2]渤海大学辽宁省超级电容器工程技术中心,辽宁锦州121013 [3]中国石油锦州石化公司,辽宁锦州121001

出　　处：《电子元件与材料》2013年第11期35-38,共4页Electronic Components And Materials

基　　金：辽宁省教育厅资助项目(No.L2012398;No.LJQ2011121);国家高技术研究发展计划(863计划)资助项目(No.2012AA110302);国家自然科学基金资助项目(No.21373002;No.21003081)

摘　　要：利用水热法对超级电容器用活性炭进行二次活化处理。对不同温度下水热处理后的活性炭进行FTIR、TGA、BET、SEM和电化学性能分析测试。结果显示水热处理可以去除活性炭表面含氧基团、疏通炭颗粒孔道、去除炭颗粒中吸附杂质和增加活性炭表面惰性,得到比容量高且电化学性能稳定的二次改性超级电容活性炭。在180℃水热处理12 h后的活性炭具有较好的二次活化效果,其比容量为175 F/g,阻抗为1.1,2 000次恒电流充放电循环后的充放电效率为93.5%。The activated carbon （AC） for supercapacitor was reactivated by hydrothermal treatment under different temperatures. The reactivated AC was investigated with FTIR, TGA, BET, SEM and the electrochemical properties analysis The experimental results show that hydrothermal treatment could eliminate the surface oxygen functional groups, dredge the channel, remove the impurities, and improve the surface stability of AC, thus the reactivated AC with higher specific capacity and better electrochemical stability is achieved for supercapacitor. Reactivated AC prepared by hydrothermal treatment at 180 ℃ for 12 h possesses good reactivation effect, and its specific capacity is 175 F/g, electrochemical impedance is 1.1 Ω and charge-discharge efficiency is 93.5% after 2 000 cycles constant current charge-discharge tests.

关 键 词：水热法 活性炭 二次活化 超级电容器 比容量 电化学稳定性 

分 类 号：TM53[电气工程—电器]