【摘要】 应用溶剂热法合成Ni3S4微米球,采用XRD和SEM表征样品物相结构、观察其微观形貌.电化学性能测试表明Ni3S4电极有较好的比电容性能,0.5和4 A.g-1放电电流密度下,其比容量分别为1120.6和433.4 F.g-1;1000周循环充放电后,其容量保持率为89.37%和84.88%.XRD、XPS和CV测试结果表明,其电化学反应机理为Ni(OH)2与NiOOH的相互转化.更多还原

【Abstract】 The Ni3S4 microspheres have been synthesized via a facile solvothermal method.The crystal structure and surface morphology are characterized by X-ray diffraction(XRD) and scanning electron microscopy(SEM).Microspherical Ni3S4 exhibits good electrochemical capacitance validated by electrochemical measurements.The specific capacities of 1120.6 F·g-1 at 0.5 F·g-1 and 433.4 F·g-1 at 4 A·g-1 with the capacitance retention of 89.37% and 84.88% were obtained after 1000 cycles,respectively.The electrochemical reaction is expected due to the transformation of Ni(OH)2 and NiOOH based on the XRD,XPS and CV analysis results.更多还原