摘要
以氧化石墨烯为原料,通过水热反应和高温焙烧过程制备了三维石墨烯柱状体材料。采用机械力学测试方法分析三维石墨烯的可压缩性能,将其作为超级电容器的电极材料测试其电化学性能。结果表明,三维石墨烯呈多孔网状结构,具有良好的可压缩性能和机械性能。电极片厚度为2 mm,铝塑外包尺寸为5 cm×6 cm的对称超级电容器在电流密度为0.1 A/g下比电容为175 F/g,在电流密度为1 A/g下充放电循环10000次后比电容保持率为81.9%。在加载不同大小压力压缩状态下,其保持了良好的电容性能。
In this study,three-dimensional graphene monolithic materials(3DG)were prepared from graphene oxide by hydrothermal reaction and high temperature annealing process.The compressible properties and electrochemical performance of 3DG using as electrode material for supercapacitor were evaluated.The 3DG material with 3D porous cross-linked networks exhibited excellent compressibility and mechanical properties.The symmetrical supercapacitor based on 3DG electrode materials with sheet thickness of 2 mm and aluminum plastic package size of 5×6 cm^2 showed a specific capacitance of 175 F/g in 6 mol/L KOH electrolyte at the current density of 0.1 A/g,along with the specific capacitance retention rate of 81.9%after 10000 cycles at current density of 1 A/g.After loading different force,the excellent capacitive performance kept well.
作者
张素玲
王松
徐强
董青
韩继勇
高俊琳
万星辰
卢艳红
ZHANG Suling;WANG Song;XU Qiang;DONG Qing;HAN Jiyong;GAO Junlin;WAN Xingchen;LU Yanhong(School of Chemistry and Material Science, Langfang Normal University, Langfang 065000, China)
出处
《功能材料》
EI
CAS
CSCD
北大核心
2020年第8期8175-8182,共8页
Journal of Functional Materials
基金
国家自然科学基金资助项目(51502125)
河北省自然科学基金资助项目(E2016408035,E2020408004)
廊坊师范学院省属高等学校基本科研业务费项目(JYT201901)
廊坊师范学院资助项目(K2018-20,LSLB201401)
南开大学功能高分子教育部重点实验室开放基金。
关键词
三维石墨烯
超级电容器
水热反应
可压缩性
电化学性能
three dimensional graphene
supercapacitor
hydrothermal reaction
compressibility
electrochemical performance
