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Specific capacitance and energy density are found increasing greatly after the incorporation of certain amount of copper (Cu) into nickel oxide (NiO) electrode. In this work, a series of binary nickel copper oxides is synthesized directly on flexible lightweight carbon fiber paper substrates as binder-free electrodes. The correlation between the Ni/Cu ratio and supercapacitor performance is revealled...
With the aim of tailoring the electrochemical properties of p-type nickel oxide, the logical approach is to dope the material with a p-type acceptor to improve both the conductivity and supercapacitor performance. However, in this work, we incorporated an n-type element into p-type NiO instead. This is for examining such effect that is poorly known. Group III redox-inactive element Ga is chosen to...
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