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通过液相共沉淀法及高温热解法制备了裂开球形氧化镍氧化铜复合物.采用了X射线衍射光谱(XRD)、扫描电子显微镜(SEM)及透射电子显微镜(TEM)表征了该材料的结构.采用恒流充放电法研究了制备的NiO-CuO复合物在6 mol·L-1KOH溶液中的电化学行为.实验结果表明:这种裂开球形复合氧化物由氧化镍、氧化铜组成.该材料在1 A·g-1的电流密度下所得复合氧化物单电级比电容为735 F·g-1,并且在580次充放电循环后,容量保持率为98%,远远高于氧化镍(351 F·g-1)和氧化铜(262 F·g-1)的比容量.
The debonded spherical nickel oxide-copper oxide composites were prepared by liquid coprecipitation and high temperature pyrolysis. The materials were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) The electrochemical behavior of the prepared NiO-CuO composite in 6 mol·L-1 KOH solution was studied by means of constant-current charge-discharge method.The experimental results show that the split spherical composite oxide consists of nickel oxide, copper oxide The material had a single-stage specific capacitance of 735 F · g-1 at a current density of 1 A · g-1 and a capacity retention of 98% after 580 charge-discharge cycles Higher than the specific capacity of nickel oxide (351 F · g-1) and copper oxide (262 F · g-1).