二氧化锰/生物碳电极材料的制备及电容性能研究

吉林建筑大学 建筑节能技术工程实验室,长春 130118

超级电容器; 生物碳; 二氧化锰; 电极材料

Preparation of manganese dioxide/biocarbon electrode materials and its capacitive performance
ZHU Hao-peng,WANG Hong-wei,ZHAO Li*

Engineering laboratory of building energy saving technology,Jilin Jianzhu University,Changchun 130118,China

supercapacitors; biocarbon; manganese dioxide; electrode materials

备注

为提高超级电容器的电化学性能,利用木屑在氮气气氛下碳化后制得具有碳微米管结构的生物碳,进而采用电沉积法在生物碳上沉积二氧化锰.中空多孔的碳结构具有更多的活性点位和离子传输途径,为离子的存储和运输提供了便利.所制备的MnO2/C复合材料用作超级电容器电极,在1 A/g的电流密度下,比电容达到 800.3 F/g,该MnO2/C复合电极是一种优异的电极材料,在电化学储能领域具有良好的应用前景.

Wood chips were carbonized under nitrogen atmosphere to produce biochar with carbon micron tube structure,and then manganese dioxide was deposited on the biochar using electrodeposition method.The hollow and porous carbon structure exhibits more active sites and ion transport pathways for ion storage and transport.The prepared MnO2/C composite was used as a supercapacitor electrode with a specific capacitance of 800.3 F/g at a current density of 1A/g.The MnO2/C composite electrode is an excellent electrode material with good application in electrochemical energy storage.