Abstract：Amorphous hydrous nanostructured MnO2 was synthesized in chemical coprecipitation method by mixing KMnO4 and manganese acetate aqueous solution using polyethylene glycol(PEG) as disperser.The product was characterized by SEM, TEM, FT-IR, XRD and BET.The results show that the amorphous hydrous nanoparticles with the mean particle size of 10～30 nm were obtained and BET specific surface areas are 160.7 m2/g.Electrochemical characterization was carried out by cyclic voltammetry (CV).Amorphous α-MnO2·nH2O in 1 mol/L Na2SO4 aqueous electrolyte was proved to be an excellent electrode material for supercapacitor.The specific capacitance of 203.4 F/g was obtained at the scan rate of 4 mV/s in the range of -0.2～0.9 V (vs.SCE).
张治安, 杨邦朝, 邓梅根, 胡永达, 汪斌华. 超级电容器纳米氧化锰电极材料的合成与表征[J]. 化学学报, 2004, 62(17): 1617-1620.
ZHANG Zhi-An, YANG Bang-Chao, DENG Mei-Gen, HU Yong-Da, WANG Bin-Hua. Synthesis and Characterization of Nanostructured MnO2 for Supercapacitor. Acta Chimica Sinica, 2004, 62(17): 1617-1620.