Printable Solid Electrolyte Interphase Mimic for Antioxidative Lithium Metal Electrodes

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...

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Bibliographic Details
Published in:Advanced functional materials 2020-06, Vol.30 (25), p.n/a
Main Authors: Cho, Seok‐Kyu, Kim, Hong‐I, An, Jin‐Woo, Jung, Kwangeun, Bae, Hongyeul, Kim, Jin Hong, Yim, Taeeun, Lee, Sang‐Young
Format: Article
Language:English
Subjects:
antioxidation
Electrodes
Electrolytes
humid environments
Ion transport
Lithium
lithium metal electrodes
Materials science
Oxidation
printing
solid electrolyte interphase mimic
Solid electrolytes
Stability
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Summary: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. A printable solid electrolyte interphase (pSEI) mimic is presented as a simple and scalable approach for developing antioxidative Li metal electrodes. Driven by the unique chemical structure and energy density‐favorable dimensional design, the pSEI enables a thin Li metal electrode to show exceptional antioxidation stability and reliable full cell performance after exposure to humid environments.
ISSN:1616-301X
1616-3028
DOI:10.1002/adfm.202000792