Sulfur confined MXene hosts enabling the use of carbonate-based electrolytes in alkali metal (Li/Na/K)-sulfur batteries

Room-temperature alkali metal-sulfur batteries are promising alternatives to lithium-ion batteries because of their high capacity and low inherent cost. Herein, we report MXene (Ti(3)C(2)Tx) as a host to confine sulfur (S-8), enabling the use of commercialization-friendly carbonate electrolyte in metal-sulfur batteries. The multilayer MXene structure provides tunable spacing for S-8 confinement, and its unique interlayer spacing prevents adverse polysulfide-carbonate reactions.(c) 2022 Elsevier Ltd. All rights reserved.