【摘要】 通过水热法在150℃保温6h和9h制备了纳米带状氧化锰与碳复合材料（MnO（OH）/C）。表征和分析结果表明,MnO（OH）为纳米带状结构,直径为4⁸nm,长度为几微米,碳为近似球形结构,直径约为50nm。以1.0mol/L的Na₂SO₄溶液为电解液,以所制备的MnO（OH）/C复合材料为工作电极,对其超级电容器循环伏安和恒流充放电性能进行了分析。结果表明,在0.2A/g的电流密度下,电极材料的比电容可达到116.3F/g,当电流密度增加至2.0A/g时,其比电容保持率可达82.6%。更多还原

【Abstract】 Nanoribbon-like manganese oxide（MnO（OH））/carbon composites were synthesized with a hydrothermal method at 150 °C for 6 h and 9 h. The MnO（OH） is in diameters of 4⁸ nm and lengths up to several micrometers. The carbon particulates are of sphere-like morphological structures with diameters of 50 nm. With the reaction time increasing from 6 h to 9 h, the shapes of the carbon particulates turn to more regular. The cycle voltammetry and galvanostatic charge-discharge performances of the composites were analyzed with the composites as the working electrodes and nickel foam as the counter electrodes in 1.0 mol/L Na₂SO₄ electrolytes. The results show that a specific capacitance of 116.3 F/g can be obtained at a current density of 0.2 A/g and a retention of 82.6% is observed when current density increases to 2.0 A/g.更多还原