【摘要】 金属氧化物/碳复合材料的设计与制备在超级电容器应用中具有至关重要的作用。为了研究钴氧化物对碳材料的电化学性能的影响，采用静电纺丝法对聚丙烯腈（PAN）、聚甲基丙烯酸甲酯（PMMA）和钴金属有机骨架材料（ZIF-67）的混合溶液进行纺丝，制备复合纳米纤维膜。对此纤维膜进行高温碳化与氧化处理，从而获得钴氧化物/碳复合材料，并对其形貌结构与电化学性能进行表征。结果表明：钴氧化物能明显提高碳材料的电化学性能。当ZIF-67的负载量为20%时，获得的钴氧化物/碳复合材料电化学性能最优，其在1 A/g的电流密度下比电容可达187 F/g，约是无负载钴氧化物的碳材料的4倍。更多还原

【Abstract】 The design and preparation of cobalt oxide/carbon composites plays a vital role in the application of supercapacitors. In order to study the influence of cobalt oxide on the electrochemical performance of carbon materials,the composite nanofiber membranes were prepared by spining the mixed solution of polyacrylonitrile(PAN),polymethyl methacrylate(PMMA)and cobalt metal organic framework material(ZIF-67)with electrospining technique. Then the membranes were carbonized and oxidized to obtain the cobalt oxide/carbon composites,and their morphologies and electrochemical performance were characterized. The results show that cobalt oxide can significantly improve the electrochemical performance of carbon materials. When the loading amount of ZIF-67 is 20%,the electrochemical performance of the obtained cobalt oxide/carbon composite is the best. Its specific capacitance can reach 187 F/g at a current density of 1 A/g,which is about four times as much as the carbon materials without cobalt oxide.更多还原