Iron Selenide Microcapsules as Universal Conversion‐Typed Anodes for Alkali Metal‐Ion Batteries

Rechargeable alkali metal‐ion batteries (AMIBs) are receiving significant attention owing to their high energy density and low weight. The performance of AMIBs is highly dependent on the electrode materials. It is, therefore, quite crucial to explore suitable electrode materials that can fulfil the future requirements of AMIBs. Herein, a hierarchical hybrid yolk–shell structure of carbon‐coated iron selenide microcapsules (FeSe 2 @C‐3 MCs) is...