Abstract
The pursuit of novel cathode materials with excellent performance is the key to promoting the application of rechargeable magnesium batteries (RMBs). Herein, bimetallic copper-cobalt selenide (CuCo2Se4) as a cathode material for RMBs, synthesized via a microwave-assisted method. In contrast to the monometallic selenide (Co0.85Se), CuCo2Se4 exhibits a high reversible capacity of 108 mAh g−1 at 50 mA g−1 after 80 cycles, and a superior rate capability (90 mAh g−1 at 200 mA g−1). The crystal phase transition of the conversion electrode material during the cycles is analyzed using ex-situ XRD technology. The enhanced stability of bimetallic selenide provides a good experimental support for the preparation of high-performance rechargeable magnesium batteries based on bimetallic strategy.
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