As electrode materials, metal-organic frameworks always have low electrical conductivity and poor structural stability, which limits its applications in electrochemical fields. Here, Ni-BPDC/GO composites are synthesized using graphene oxide (GO) as a substrate and 4,4′-biphenyldicarboxylic acid (BPDC) as an organic ligand via a hydrothermal approach. The growth mechanism of the Ni-BPDC and Ni-BPDC/GO composites is proposed. In the composites, highly dispersed Ni-BPDC macro-nanostrips are supported on the GO surface in parallel. The presence of GO does not affect the growth and crystalline structure of Ni-BPDC. Compared with the Ni-BPDC, Ni-BPDC/GO composites exhibit higher specific capacitance, rate capability, and operating current density through lowering intrinsic resistance, charge-transfer resistance, and ion diffusion impedance. Moreover, the assembled Ni-BPDC/GO-3//reduced graphene oxide (rGO) asymmetric supercapacitor has large specific capacitance, good cycling stability, and high energy density (16.5 W h/kg at 250 W/kg). Hence, Ni-BPDC/GO composites are a potential electrode material for supercapacitors.

作为电极材料，金属有机骨架始终具有较低的电导率和较差的结构稳定性，这限制了其在电化学领域的应用。在此，Ni-BPDC / GO复合材料是通过水热法，以氧化石墨烯（GO）为底物和4,4'-联苯二甲酸（BPDC）作为有机配体来合成的。提出了Ni-BPDC和Ni-BPDC / GO复合材料的生长机理。在复合材料中，高度分散的Ni-BPDC宏观纳米带平行支撑在GO表面上。GO的存在不影响Ni-BPDC的生长和晶体结构。与Ni-BPDC相比，Ni-BPDC / GO复合材料通过降低固有电阻，电荷转移电阻和离子扩散阻抗，具有更高的比电容，倍率能力和工作电流密度。此外，组装好的Ni-BPDC / GO-3 //氧化石墨烯（rGO）不对称超级电容器具有大的比电容，良好的循环稳定性和高能量密度（250 W / kg时为16.5 W h / kg）。因此，Ni-BPDC / GO复合材料是超级电容器的潜在电极材料。