以乙酸锰和草酸为原料制备了草酸锰前驱体, 并在氩气保护下将其焙烧得到了具有超电容特性的氧化亚锰, 并对草酸锰前驱体的TG-DSC曲线和XRD谱以及氧化亚锰的SEM形貌、EDS结果和电化学性能进行了分析。结果表明: 在氩气气氛中焙烧草酸锰前驱体能够生成面心立方结构的氧化亚锰; 500 ℃焙烧可得到粒径为0.5~2.0 μm的小颗粒状氧化亚锰, 其电容特性分布在0 ~ -0.8 V电位范围内, 在1 mol·L-1 Li2SO4溶液中、0.1 A·g-1电流密度下其比容量约为49.7 F·g-1, 经200次循环充放电后比容量衰减率仅为1.1%, 适合用作超级电容器的负极材料。

Taking manganese acetate and oxalate as raw materials to prepare manganese oxalate precursor, and the precursor was roasted at argon atmosphere to obtain manganous oxide with supercapacitive characteristics. The TG-DSC curves and XRD patterns of manganese oxalate precursor, and the SEM morphology, EDS results and electrochemical performance were analyzed. The results show that manganous oxide with face-centered cubic structure was obtained by roasting manganese oxalate precursor at argon atmosphere. The small granular manganous oxide with diameter 0.5-2.0 μm was got after roasting at 500 ℃, its capacitive characteristics distributed in the range of 0-0.8 V. The specific capacity was about 49.7 F·g-1 under the condition of 1 mol·L-1 Li2SO4 solution and 0.1 A·g-1current density, and the lost rate of specific capacitance was only 1.1% after 200 charge-discharge cycles, so it could be used as anode material of supercapacitor.