Dual-domain solvent-locked electrolyte enabled durable 4.5 V-class sodium batteries
Weihua Chen
Nature Communications, Published online: 06 May 2026; doi:10.1038/s41467-026-72849-z Traditional electrolytes are electrochemically unstable on the positive electrode surface. Here, the author designed a solvent locked electrolyte to form a stable boride/fluoride interface. The assembled Na||Na2.26Fe1.87(SO4)3 battery maintained 88.2% capacity after 16500 cycles at 1 A g-1.