武汉工程大学学报2024，Vol.46Issue(4)：382-389,8.DOI:10.19843/j.cnki.CN42-1779/TQ.202310011
锰氧化物/N-掺杂碳复合材料的制备及电化学性能研究
Preparation and electrochemical properties of manganese oxide/N-doped carbon composites
摘要
Abstract
To obtain an electrode material with high power density,high specific capacitance,and long cycle life,manganese dioxide/polyaniline(MnO2@PANI)nanocomposite materials were synthesized through the gas-liquid interface reaction between aniline(An)gas and potassium permanganate(KMnO4)aqueous solution.The MnO2@PANI nanocomposite materials were then placed in a tubular furnace and annealed at a constant temperature of 700℃under argon protection for 2 hours,resulting in the formation of manganese oxide/carbon(MnOx@C)composite materials.The composition,structure,and microstructure of the products were analyzed using scanning electron microscope,X-ray diffractometer,specific surface area and pore size analyzer,Fourier transform infrared spectrometer,and X-ray photoelectron spectrometer.The electrochemical test results show that MnOx@C has a higher voltage range(-1-1 V),excellent specific capacitance(215 F/g,1 A/g),ideal rate performance(the specific capacitance retention is 56%when the current density increases from 1 A/g to 10 A/g),and a longer cycle life(after 5 000 charge-discharge cycles,the specific capacitance retention remains 96.2%at a current density of 5 A/g).Thus the introduction of carbon materials can effectively improve the specific capacitance,rate performance,and cycling stability of manganese-based supercapacitor electrode materials.关键词
聚苯胺/锰氧化物/N-掺杂碳材料/超级电容器Key words
polyaniline/manganese oxide/N-doped carbon material/supercapacitor分类
化学化工引用本文复制引用
罗剑,田宝妍,吕彦,郑春鹏,黄华波..锰氧化物/N-掺杂碳复合材料的制备及电化学性能研究[J].武汉工程大学学报,2024,46(4):382-389,8.基金项目
湖北省自然科学基金(2021CFB507) （2021CFB507）
