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A facile and fast approach for the synthesis of a nanostructured nickel hydroxide(Ni(OH)_2) via sonochemical technique is reported in the present study. The X-ray diffraction results confirmed that the synthesized Ni(OH)_2 was oriented in β-phase of hexagonal brucite structure. The nanostructured Ni(OH)_2 electrode exhibited the maximum specific capacitance of 1256 F/g at a current density of 200 mA/g in 1 M KOH_((aq)). Ni(OH)_2 electrodes exhibited the pseudocapacitive behavior due to the presence of redox reaction. It also exhibited long-term cyclic stability of 85% after 2000 cycles, suggesting that the nanostructured Ni(OH)_2 electrode will play a promising role for high performance supercapacitor application.
A facile and fast approach for the synthesis of a nanostructured nickel hydroxide (Ni (OH) _2) via sonochemical technique is reported in the present study. The X-ray diffraction results confirmed that the synthesized Ni (OH) _2 was oriented in β- phase of hexagonal brucite structure. The nanostructured Ni (OH) _2 electrode exhibits the maximum specific capacitance of 1256 F / g at a current density of 200 mA / g in 1 M KOH _ ((aq)). the pseudocapacitive behavior due to the presence of redox reaction. It also suggests long-term cyclic stability of 85% after 2000 cycles, suggesting that the nanostructured Ni (OH) _2 electrode will play a promising role for high performance supercapacitor application.