Explore the electrochemical performance of a novel metal copper-sodium battery

摘要

Exploring novel metal-metal batteries with a facile manufacturing process and low production cost is crucial for the development of next-generation energy storage systems. In this work, the electrochemical performance of a novel Cu-Na battery with Cu foil as a cathode and Na foil as an anode is explored for the first time. The Cu-Na battery exhibits good electrochemical reaction reversibility and cycling stability, which delivers a Coulombic efficiency of 61.5% under a charge capacity limitation of 0.02 mA h cm(- 2) with a current density of 0.01 mA cm(- 2) after 50 cycles. EIS analysis reveals that the Cu-Na battery maintains a stable electrochemical reaction resistance upon repeated cycles. The present work demonstrates that this Cu-Na battery could be a promising candidate for the next-generation energy storage system.

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