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A facile novel preparation of three-dimensional Ni@graphene by catalyzed glucose blowing for high-performance supercapacitor electrodes

Three-dimensional Ni@graphene (NG) was prepared for the first time at a low temperature by a one-step facile calcination method. The obtained NG showed a high specific capacitance of 765 F g−1 at a current density of 1 A g−1 and only 5% loss of the initial specific capacitance after 3000 charge–discharge cycles.