Accelerated Reversible Conversion of Li2S2 to Li2S by Spidroin Regulated Li+ Flux for High‐performance Li‐Sulfur Batteries

• DOI: 10.1002/anie.202417624
• Publication Date: 2024-09-30T12:59:05Z
• Authors: Mingliang Liu; Zhen Wu; Shujun Liu; Tong Guo; Peng Chen; Xuan Cao; Shencheng Pan; Tianhong Zhou; Lea Pompizii; Murad Najafov; Ali Coskun; Yongsheng Fu
• Keywords: Separator (oil production)

Regulating the transformation of sulfur species is key to improving electrochemical performance lithium‐sulfur (Li‐S) batteries, in particular, accelerate reversible conversion between solid phase Li2S2 and Li2S. Herein, we introduced Spidroin, which a main protein spider silk, as dual functional separator coating Li‐S batteries effectively adsorb polysulfides via sequence amino acids its primary structure regulate Li+ flux through β‐sheet secondary structure, thus accelerating Spidroin‐based cells exhibited an exceptional with high specific capacity 744.1 mAh g‐1 at 5C areal 7.5 cm‐2 low electrolyte‐to‐sulfur (E/S) ratio 6 μL mgs‐1 loading 8.6 mgs cm‐2.