二氧化锰/生物碳电极材料的制备及电容性能研究

Preparation of manganese dioxide/biocarbon electrode materials and its capacitive performance

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MnO_(2)/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MnO_(2)/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 MnO_(2)/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 MnO_(2)/C composite electrode is an excellent electrode material with good application in electrochemical energy storage.