石墨电极的电化学改性及其电学性能  

Electrochemical Modification of Graphite Electrode and Its Electrical Performance

作　　者：崔怡然 秦琦[1] 皇甫娟娟 牛珂爽 王梦强 陈文文 王晶[1] 李纪渊 CUI Yi-ran;QIN Qi;HUANG-FU Juan-juan;NIU Ke-shuang;WANG Meng-qiang;CHEN Wen-wen;WANG Jing;LI Ji-yuan(Zhongyuan University of Technology,Zhengzhou 450007,China)

机构地区：[1]中原工学院,郑州450007

出　　处：《当代化工》2021年第5期1056-1059,共4页Contemporary Chemical Industry

基　　金：河南省高等学校大学生实践创新训练计划(项目编号:201910465001)。

摘　　要：采用恒电位电化学剥离的方法,分别在2.0、2.5、3.0、3.1、3.2V电压下进行电化学剥离,选用循环伏安法、恒流充放电测试等表征手段,根据图像计算在不同电位下改性石墨烯的电导率,比较各个电压处理的石墨烯电极的电学性能。测试结果表明:对施加3.0V电压处理的电极会使石墨烯部分表面脱落,说明处理电压过高;在3.1 V恒电压下处理的石墨电极,设置电压范围为-0.3~0.3 V时,并施加0.49 mA的阳极电流和0.49 mA的阴极电流,测试结果的质量比电容达到18.845 F·g^(-1),该电容值符合小型电子器件的标准,符合电池行业的储能要求。In order to further explore the electrical properties of graphene, the constant potential electrochemical modification method was used to modify graphite with different potentials, and then modified graphite was characterized by cyclic voltammetry test, constant current charging and discharging. Their electrical properties of modified graphite at different potentials were compared. The test results showed that after the graphite electrode was treated under the constant voltage of 3.1 V, voltage range of-0.3~0.3 V, 0.49 mA anode current and 0.49 mA cathode current, the measured mass ratio capacitance reached 18.845 F·g^(-1), meeting the energy storage requirements of the battery industry.

关 键 词：石墨烯电极 电容性能 超级电容器 电化学剥离法 

分 类 号：TB324[一般工业技术—材料科学与工程]