Honeycomb-like Ni3(NO3)2(OH)4@Ni/Co-BTC composites as electrode materials for high performance supercapacitors

Featuring abundant pore structure, the metal?organic frameworks (MOFs) have invoked new feasibilities to the full potential of electrode materials in emerging supercapacitors. Here, a novel honeycomb-like Ni-3(NO3)(2)(OH)(4)@Ni/Co-BTC is elaborately fabricated by growing Ni-3(NO3)(2)(OH)(4) on the surface of Ni/CoMOF substrate by solvent thermal method. The Ni-3(NO3)(2)(OH)4@Ni/Co-BTC-based supercapacitor with extremely high specific capacity (1959 F g(-1) at 1 A g(-1)) is contributed to the unique honeycomb-like structure of electrode. The capacitance contribution analysis indicates that Ni-3(NO3)(2)(OH)(4)@Ni/Co-BTC belongs to pseudocapacitive materials. The reported strategy is expected to provide new insight into electrode designing for high-capacity supercapacitors, thus broadening the application of MOFs in this field.