Preparation method of porous carbon-loaded manganese dioxide nano material

The invention discloses a preparation method of a porous carbon-loaded manganese dioxide nano material. The method comprises the following steps of performing grinding on porous carbon and potassium permanganate according to the mass ratio of 1:4 to 1:16, and dispersing in water, adding concentrated sulfuric acid, carrying out stirring and uniformly mixing, and then carrying out water bath heatingreaction to obtain the porous carbon-loaded manganese dioxide nano material. The method disclosed by the invention is simple and feasible, the physical properties of the synthesized nano material arerelatively stable, and the specific capacitance can reach 337 F/g; and when the nano material is used as a supercapacitor material, relatively high electrochemical performance is shown. 本发明公开了一种多孔碳负载二氧化锰纳米材料的制备方法。所述方法将多孔碳和高锰酸钾按质量比为1:4～1:16研磨，分散于水中，并加入浓硫酸搅拌混合均匀后，水浴加热反应得到多孔碳负载二氧化锰纳米材料。本发明方法简便易行，合成的纳米材料的物理性质较为稳定，比电容可达337F/g，作为超级电容器材料具有较好的电化学性能。