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Printable Solid Electrolyte Interphase Mimic for Antioxidative Lithium Metal Electrodes
Author(s) -
Cho SeokKyu,
Kim HongI,
An JinWoo,
Jung Kwangeun,
Bae Hongyeul,
Kim Jin Hong,
Yim Taeeun,
Lee SangYoung
Publication year - 2020
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.202000792
Subject(s) - materials science , electrolyte , electrode , trimethylolpropane , chemical engineering , lithium (medication) , polymerization , metal , interphase , nanotechnology , polymer , composite material , chemistry , metallurgy , medicine , biology , engineering , genetics , endocrinology , polyurethane
Despite the ever‐growing demand for Li metals as next‐generation Li battery electrodes, little attention has been paid to their oxidation stability, which must be achieved for practical applications. Here, a new class of printable solid electrolyte interphase mimic (pSEI) for antioxidative Li metal electrodes is presented. The pSEI (≈1 µm) is directly fabricated on a thin Li metal electrode (25 µm) by processing solvent‐free, UV polymerization‐assisted printing, exhibiting its manufacturing simplicity and scalability. The pSEI is rationally designed to mimic a typical SEI comprising organic and inorganic components, in which ethoxylated trimethylolpropane triacrylate and diallyldimethylammonium bis(trifluoromethanesulfonyl)imide are introduced as an organic mimic (acting as a moisture‐repellent structural framework) and inorganic mimic (allowing facile Li‐ion transport/high Li + transference number), respectively. Driven by the chemical/architectural uniqueness, the pSEI enables the thin Li metal electrode to show exceptional antioxidation stability and reliable full cell performance after exposure to humid environments.