CAJ | 학술논문

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-1 KOH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。
통과액상공침정법급고온열해법제비료렬개구형양화얼양화동복합물。채용료X 사선연사광보（XRD）、소묘전자현미경（SEM）급투사전자현미경（TEM）표정료해재료적결구。채용항류충방전법연구료제비적NiO-CuO복합물재6 mol· L-1 KOH용액중적전화학행위。실험결과표명：저충렬개구형복합양화물유양화얼、양화동조성。해재료재1 A· g-1적전류밀도하소득복합양화물단전급비전용위735 F· g-1，병차재580차충방전순배후，용량보지솔위98％，원원고우양화얼（351 F· g-1）화양화동（262 F· g-1）적비용량。
Split sphere-like NiO-CuO composites were successfully prepared by thermal decomposi-tion of mixed oxalate precursors in air.The synthesized NiO-CuO composites were characterized by X-ray diffraction ( XRD ) , Scanning electron microscopy ( SEM ) , and Transmission electron microscopy ( TEM) .The capacitive behavior of NiO-CuO composites was studied by galvanostatic charge-discharge studies in 6 mol· L-1 KOH solution at different current density.The results show that the split sphere-like composites at 350 ℃show good capacitive behavior with a specific capacitance of 735 F· g -1 and the capacitance loss after 580 cycles is only 2%, which was far higher than pure NiO(351 F· g -1 ) and pure CuO(262 F· g-1 ) .