【摘要】 采用液相沉积法在二硫化钼（MoS₂）上负载二氧化锰（MnO₂）以获得更好的电化学性能,利用多技术表征了样品的物相和形貌,并利用低温氮吸附BET模型测试了样品的比表面积和孔容。结果表明,复合材料继承了MoS₂的球花状形貌,大量MnO₂纳米颗粒沉积在纳米MoS₂片层表面和充填于层间,增大了材料的比表面积和孔容。电化学测试表明:在1mol·L^-1 Na₂SO₄电解液中,复合材料的比电容可达265.7F·g^-1(电流密度为0.3A·g^-1),界面转移电阻R_ct约为1.64Ω;经过1000次循环充放电,比电容保持率达92.3%,说明复合材料具有良好的电化学性能。更多还原

【Abstract】 Manganese dioxide（MnO₂） was deposited on molybdenum disulfide（MoS₂） nanosheets via liquid phase deposition（LPD） to enhance the electrochemical performance. The material phase, morphology, specific surface area and pore volume of the samples were characterized and measured experimentallyThe results indicate that the composite material inherits the spherical flower-like morphology of MoS₂. In addition, a large number of the MnO₂ nanoparticles deposited onto the surface of the MoS₂ nanosheets are intercalated within its layers, thus enhancing the specific surface area and pore volume of the material. The electrochemical properties of the samples were also tested. In 1 mol·L^-1 Na₂SO₄ electrolyte, the composite material has a single electrode specific capacitance of 265.7 F·g^-1(with a current density of 0.3 A·g^-1), and a charge transfer resistance(R_ct) of 1.64Ω; the capacitance of the material remains at 92.3% after 1000 charge-discharge cycles. It is demonstrated that the composite material synthesized in this study exhibits an excellent electrochemical performance.更多还原