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A new application of metal organic framework(MOF) as a pseudo-capacitive material for supercapacitors is investigated.To this end,a simple nickel-based MOF,formulated Ni_3(btc)_2-12H_2O,is synthesized via a hydrothermal reaction.As an electro-active material,such nickel-based MOF exhibits superior pseudocapacitive behavior in KOH aqueous electrolyte with a high specific capacitance of 726 Fg~(-1).Also,it displays good electrochemical stability with 94.6%of the initial capacitance over consecutive 1000 cycles.In addition,a simple asymmetric supercapacitor with a high energy density of 16.5 Wh kg~(-1) is successfully built using the nickel-based MOF as positive electrode and commercial activated carbon as negative electrode in KOH electrolyte.
A new application of metal organic framework (MOF) as a pseudo-capacitive material for supercapacitors is investigated.To this end, a simple nickel-based MOF, formulated Ni_3 (btc) _2-12H_2O, was synthesized via a hydrothermal reaction. Asan electro-active material, such as nickel-based MOF exhibits superior pseudocapacitive behavior in KOH aqueous electrolyte with a high specific capacitance of 726 Fg ~ (-1) .Also, it displays good electrochemical stability with 94.6% of the initial capacitance over consecutive 1000 cycles .In addition, a simple asymmetric supercapacitor with a high energy density of 16.5 Wh kg -1 was successfully built using the nickel-based MOF as positive electrode and commercial activated carbon as a negative electrode in KOH electrolyte.