Printable Solid Electrolyte Interphase Mimic for Antioxidative Lithium Metal Electrodes

Seok Kyu Cho, Hong I. Kim, Jin Woo An, Kwangeun Jung, Hongyeul Bae, Jin Hong Kim, Taeeun Yim, Sang Young Lee

Research output: Contribution to journalArticle

Abstract

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.

Original languageEnglish
Article number2000792
JournalAdvanced Functional Materials
Volume30
Issue number25
DOIs
Publication statusPublished - 2020 Jun 1

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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    Cho, S. K., Kim, H. I., An, J. W., Jung, K., Bae, H., Kim, J. H., Yim, T., & Lee, S. Y. (2020). Printable Solid Electrolyte Interphase Mimic for Antioxidative Lithium Metal Electrodes. Advanced Functional Materials, 30(25), [2000792]. https://doi.org/10.1002/adfm.202000792