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Sodium‐metal batteries (SMBs) are considered as a compliment to lithium‐metal batteries for next‐generation high‐energy batteries because of their low cost and the abundance of sodium (Na). Herein, a 3D nanostructured porous carbon particle containing carbon‐shell‐coated Fe nanoparticles (PC‐CFe) is employed as a highly reversible Na‐metal host. PC‐CFe has a unique 3D hierarchy based on sub‐micrometer‐sized...
Sodium‐Metal Batteries
In article number 2109767, Byung‐Hyun Kim, Bumjoon J. Kim, Seung Woo Lee, and co‐workers report anode‐free sodium‐metal batteries. The cover image depicts two batteries: the left shows typical sodium‐metal batteries, where the continuous dendrite growth in the sodium‐metal anodes causes a short‐circuit, resulting in battery failure. Contrarily, the right shows highly reversible...
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