【摘要】 以乙酸锰、乙酸锌和自制氧化石墨烯为原料,分别采用溶剂热法和水热法制备了ZnMn₂O₄/RGO复合材料,并对其电化学性能进行对比分析.结果表明:RGO的加入,增大了ZnMn₂O₄/RGO复合材料的比表面积,改善了ZnMn₂O₄材料的电化学性能;在电流密度为2 A/g的条件下,采用溶剂热法和水热法所制ZnMn₂O₄/RGO复合材料的比电容分别为763. 4 F/g和127. 8 F/g,经500次循环实验后,这两种方法所制备的复合材料的电容保持率分别为84. 9%和83. 0%,综合考虑,溶剂热法所制ZnMn₂O₄/RGO复合材料的综合性能较好.更多还原

【Abstract】 Using manganese acetate,zinc acetate and self-made graphene oxide as raw materials,ZnMn₂O₄/RGO composites were prepared by solvothermal method and hydrothermal method,respectively,and their electrochemical properties were studied comparatively. The results showed that the addition of RGO increased the specific surface area of the ZnMn₂O₄/RGO composites and improved the electrochemical properties of the ZnMn₂O₄ material; under the condition of a current density of 2 A/g,the ZnMn₂O₄/RGO composites prepared by solvothermal method and hydrothermal method had specific capacitances of 763. 4 F/g and 127. 8 F/g,respectively. After 500 cycles of experiments,the capacitance retention rates of the composites made by these two methods were 84. 9% and 83. 0%,respectively. The ZnMn₂O₄/RGO composites made by thermal method had better comprehensive properties.更多还原