Galvanically Replaced, Single-Bodied Lithium-Ion Battery Fabric Electrodes

Sang Gil Woo, Sijae Yoo, Si Hyoun Lim, Ji Sang Yu, Kyungbae Kim, Jaegab Lee, Donggue Lee, Jae Hun Kim, Sang Young Lee

Research output: Contribution to journalArticle

Abstract

Despite extensive research on flexible/wearable power sources, their structural stability and electrochemical reliability upon mechanical deformation and charge/discharge cycling have not yet been completely achieved. A new class of galvanically replaced single-bodied lithium-ion battery (LIB) fabric electrodes is demonstrated. As a proof of concept, metallic tin (Sn) is chosen as an electrode active material. Mechanically compliable polyethyleneterephthalate (PET) fabrics are conformally coated with thin metallic nickel (Ni) layers via electroless plating to develop flexible current collectors. Driven by the electrochemical potential difference between Ni and Sn, the thin Ni layers are galvanically replaced with Sn, resulting in the fabrication of a single-bodied Sn@Ni fabric electrode (Sn is monolithically embedded in the Ni matrix on the PET fabric). Benefiting from the chemical/structural uniqueness and rationally designed bicontinuous ion/electron transport pathways, the single-bodied Sn@Ni fabric electrode provides exceptional redox reaction kinetics and omnidirectional deformability (notably, origami-folding boats), which lie far beyond those attainable with conventional LIB electrode technologies.

Original languageEnglish
Article number1908633
JournalAdvanced Functional Materials
Volume30
Issue number16
DOIs
Publication statusPublished - 2020 Apr 1

All Science Journal Classification (ASJC) codes

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

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    Woo, S. G., Yoo, S., Lim, S. H., Yu, J. S., Kim, K., Lee, J., Lee, D., Kim, J. H., & Lee, S. Y. (2020). Galvanically Replaced, Single-Bodied Lithium-Ion Battery Fabric Electrodes. Advanced Functional Materials, 30(16), [1908633]. https://doi.org/10.1002/adfm.201908633