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Fast ion diffusion in anode hosts enabling uniform distribution of Li/Na/K is essential for achieving dendrite‐free alkali‐metal batteries. Common strategies, e.g. expanding the interlayer spacing of anode materials, can enhance bulk diffusion of Li but are less efficient for Na and K due to their larger ionic radius. Herein, a universal strategy to drastically improve the mass‐transport efficiency...
Dendrite‐Free Metal Batteries
In article number 2210447, Yong Cheng, Quanfeng Dong, Ming‐Sheng Wang, and co‐workers reveal the Na/K plating/stripping behaviors in carbon capsules with open mesochannels by in situ electron microscopy. These mesochannels can boost surface ion diffusion, and, after metal filling, they become superfast channels for Na/K transport via interfacial diffusion. Such pore‐modified...
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