Self-powered electrochemical deposition of Cu@Ni(OH)(2) nanobelts for high performance pseudocapacitors

Two aluminum-driven spontaneous electrochemical reactions are developed for depositing Cu@Ni(OH)(2) nanobelts on carbon/aluminum electrodes. The Cu@Ni(OH)(2) NBs function as pseudocapacitor electrodes, which exhibit a high specific capacitance of 2426 F g(-1) and a remarkable rate performance.