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Rechargeable Magnesium Batteries
In article number 2202250, Hong‐Yi Li, Xie Zhang, and co‐workers reveal the function of Mg2+ as a key to unlock the nano‐highways for Mg2+ diffusion in lamellar‐structured Cu3V2O7(OH)2·2H2O (CVOH). The Mg2+ self‐induced diffusion highways enable high specific capacity, excellent rate capability, and cycling stability of CVOH as a cathode for rechargeable magnesium...
Rechargeable magnesium batteries (RMBs) suffer from low capacity and poor cyclability of cathode materials, which is due to the sluggish Mg2+ diffusion kinetics and large lattice strain. Here, a layer‐interweaving mechanism in lamellar cathode to simultaneously facilitate Mg2+ diffusion and release Mg2+‐insertion strain is reported. In the Cu3V2O7(OH)2·2H2O (CVOH) cathode, Mg2+ diffusion highways...
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