熔盐法制备氮掺杂多孔石墨烯及电化学性能研究
Preparation of nitrogen-doped porous graphene by molten-salt method and its electrochemical properties
胡文博 1邢艳伟 1辛国祥 1刘金鑫 1孙伟1
作者信息
- 1. 内蒙古科技大学材料科学与工程学院,内蒙古包头 014010
- 折叠
摘要
采用熔盐法,以氧化石墨烯为原料、尿素为氮源成功制备了氮掺杂多孔石墨烯(NPG-1)材料.通过XRD、SEM、TEM、XPS、BET、CV、GCD和EIS对NPG-1 进行物理性能分析和电化学性能测试.测试结果显示其具有丰富褶皱、互连网络多孔结构以及优异的电化学性能.由于NPG-1 互连网络多孔结构以及氮原子掺杂产生的赝电容,NPG-1 在0.5 A/g时具有264 F/g的高比电容,经10000 次恒流充放电循环,NPG-1 电容保持率达到 94.9%,表明其拥有良好的循环稳定性.综上所述,这种电极材料在超级电容器领域中具有实用价值和广阔前景.
Abstract
With graphene oxide as raw material and urea as nitrogen source,Nitrogen-doped porous graphene(NPG-1)material was successfully prepared by adopting the molten salt method.The physical property analysis and electrochemical property tests of the NPG-1 was performed by XRD,SEM,TEM,XPS,BET,CV,GCD and EIS.The test results showed that it has abundant folds,inter-connected network porous structure and excellent electrochemical properties.The NPG-1 has a high specific capacitance of 264 F/g at 0.5 A/g due to the porous structure of the NPG-1 interconnection network and the pseudo-capacitance generated by nitrogen atom do-ping.After10000 constant current charge-discharge cycles,the capacitance retention rate of the NPG-1 reaches 94.9%,indicating that it possesses good cycling stability.In summary,this electrode material possesses practical value and broad prospects in the field of supercapacitors.
关键词
熔盐法/氮掺杂/多孔石墨烯/超级电容器Key words
molten-salt method/nitrogen-doped/porous graphene/supercapacitor引用本文复制引用
基金项目
内蒙古自治区自然科学基金(2021MS05011)
内蒙古自治区自然科学基金(2020ZD17)
内蒙古自治区自然科学基金(2019MS02023)
出版年
2024
NETL
NSTL
万方数据