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中文摘要：
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.
英文摘要：
The Ni3S4 microspheres have been synthesized via a facile solvothermal method. The crystal struc- ture and surface morphology are characterized by X-ray diffraction （XRD） and scanning electron microscopy （SEM）. Microspherical Ni3 S4 exhibits good electrochemical capacitance validated by electrochemical measure- ments. 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 ca- pacitance retention of 89.37% and 84.88% were obtained after 1000 cycles,respectively. The electrochemi- cal reaction is expected due to the transformation of Ni （OH） 2 and NiOOH based on the XRD, XPS and CV a- nalysis results.
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