Preparation of rod δ-MnO2 electrode material and its application in water cell
The rod-like δ-MnO2 electrode material was prepared by a simple one-step hydrothermal synthesis method.The samples were characterized by XRD,XPS and SEM,and then assembled into water zinc-ion batteries for testing.The electrochemical properties were studied by CV and GCD.The test results showed that the rod-likeδ-MnO2 electrode material had a discharge capacity of 194.6 mAh/g when the current density was 0.1 A/g.The capacity retention rate of δ-MnO2 was 95.4％,and the results showed that δ-MniO2 had good stability.
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