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Ultrathin Solid Electrolyte Interphase
In article number 2106194, Shandong Li, Xia Wang, Xing‐Long Wu, and co‐workers design a 3D hierarchical porous ZnSe@N‐doped carbon hybrid as an anode material for sodium‐ion batteries, and simultaneously optimize electrolytes, resulting in rapid Na+ diffusion kinetics and an ultrathin solid electrolyte interphase film.
Transition metal selenides have been widely used in alkali metal ion batteries owing to their high specific capacities and low cost. However, their reaction kinetics and structural stability are usually poor during cycling, along with ambiguous differences in Li/Na/K‐storage behaviors. Herein, it is revealed that ZnSe possesses better Na+‐diffusion kinetics (including lower diffusion barrier, smaller...
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