Stabilizing CuTCNQ Cathodes in Sulfide-Based All-Solid-State Organic Lithium Batteries via a Fluoroiodinated Molecular Modifier

Key Points

• To investigate the stabilization of CuTCNQ cathodes using a fluoroiodinated molecular modifier.
• Introduced C₆F₁₃I as a molecular modifier.
• Conducted electrochemical activation to form an interphase.
• Examined the interface between CuTCNQ and Li₆PS₅Cl.
• The molecular modifier creates a protective LiF/LiI/organofluorinated interphase.
• This interphase suppresses electrolyte decomposition.
• Li⁺ transport is preserved, enhancing battery performance.