In Situ Copper‐Mediated Electron Bridge Revolutionizes Aqueous Sulfur‐Based Batteries

ABSTRACT The practical application of sulfur‐based batteries remains challenged by the sluggish charge transfer kinetics and structural instability of sulfur cathodes, largely attributed to the absence of efficient electron transport pathways and robust electrode architecture. Herein, we present an in situ electron bridge construction strategy by introducing a transition metal to tailor the electronic properties and reinforce the structure of sulfurized polyacrylonitrile (SPAN) cathode. The dynamic d‐p orbital hybridization between copper and SPAN within the electron bridge promotes bandgap closure, shifting the electronic character from a semiconducting state toward a metallic state, thereby establishing…

• NS
  Natural Science Foundation of Ningbo

  Awards: 2023J099, 2022J064
• NJ
  NSAF Joint Fund

  Award: U2330205
• NS
  National Safety Academic Fund

  Award: U2330205