Mg ion pre-intercalated MnO nanospheres as high-performance cathode materials for aqueous Zn-ion batteries.

Rechargeable Zn-MnO batteries with mild and nearly neutral aqueous electrolytes have shown great potential for large-scale energy storage because of their high safety, low cost, environmental friendliness and high energy density. However, MnO cathode materials usually have disadvantages such as low capacity and poor cycling stability, which limit the development of Zn-MnO batteries. In this study, mesoporous MnO nanospheres were prepared by Mg ion pre-intercalation a simple chemical method.

Key Factors for Binders to Enhance the Electrochemical Performance of Silicon Anodes through Molecular Design.

Silicon is considered the most promising candidate for anode material in lithium-ion batteries due to the high theoretical capacity. Unfortunately, the vast volume change and low electric conductivity have limited the application of silicon anodes. In the silicon anode system, the binders are essential for mechanical and conductive integrity.