A Robust Dual‐Layered Solid Electrolyte Interphase Enabled by Cation Specific Adsorption‐Induced Built‐In Electrostatic Field for Long‐Cycling Solid‐State Lithium Metal Batteries

Abstract Solid‐state lithium (Li) metal batteries (SSLMBs) are considered as one of the most promising next‐generation battery technologies due to their high energy density and intrinsic safety. However, interfacial issues such as side reactions and Li dendrite growth severely hinder the practical application of SSLMBs. In this contribution, we proposed a cationic built‐in electrostatic field to drive the generation of an anion‐derived dual‐layered solid electrolyte interphase (SEI). The specific adsorption of tributylmethyl‐phosphonium bis(trifluoromethanesulfonyl)imide (TMPB) cations onto negatively charged Li anode surface significantly prevents interfacial side reactions between vulnerable polyethylene…

• NN
  National Natural Science Foundation of China

  Awards: 22209014, 22075029, 22479012
• NS
  Natural Science Foundation of Beijing Municipality

  Award: L223009
• FR
  Fundamental Research Funds for the Central Universities

  Award: 2023CX01031
• FR
  Fundamental Research Funds for Central Universities of the Central South University

  Award: 2023CX01031
• SP
  Shanxi Provincial Key Research and Development Project

  Award: 2021020660301013