中文摘要：

以氧化石墨烯为前驱体、Co(N03)2.6H20为钴源、对苯二甲酸（H2BDC)为配体、三乙胺为添加剂、N,N-二甲基甲酰胺（DMF)为溶剂，通过一步溶剂热法制备了具有微纳结构C〇2(OH)2BDC/rGO复合电极材料。C〇2(OH)2BDC/rG0复合材料是由微米级的Co-MOF颗粒直接锚定式生长在还原氧化石墨烯表面形成的，而C〇2(OH)2BDC是由定向排列的纳米棒自组装形成的类球形颗粒。研究结果表明：不同的GO的浓度对复合材料的物相结构、形貌及电化学性能有很大的影响。当GO的浓度为2mg/ml时，在110T，24h溶剂热合成得到的C〇2(OH)2BDC/rGO复合材料在电解液为1MK0H，5mV/S下比电容为225F/g。在恒流充放电测试中，当电流密度从3A/g增加到10A/g时，C〇2(OH)2BDC/rGO的电容保持率为83.5%。在3A/g下经过500次充放电循环后电容的保持率为93.9%。

英文摘要：

The Co2(0H)2BDC/rG0electrode materials with micro-nano structure have been obtained using a facile synergistic self-assembly solvothermal route.The desired control of coordination between1,4-DBC with cobalt ions enables the macroscopic self-as-sembly of crystal orientation-ordered Co2(〇H)2BDC nanorod-bundles to be tailored into round and elongated micron-sized parti-cles.As the electrode materials for supercapacitor,it exhibited large specific capacitance,high rate capability and good cycling sta-bility.The GO loading are important factors in determining the phase,morphology and electrochemical property of as-prepared Co2(0H)2BDC/rG0composites.The optimum condition was achieved by the synthesis temperature of110,reaction time24h and2mg/ml of graphene oxide addition.Co2(0H)2BDC/rG0composite deliver a large specific capacitance of225F/g at a scan rate of5mV/s in1M KOH electrolyte,superior rate capability with a stable capacity of83.5%when the current density increase from3A/g to10A/g.Also,it displays good electrochemical stability with93.9%of the initial capacitance over consecutive500cycles at3A/g.