Antioxidative Lithium Reservoir Based on Interstitial Channels of Carbon Nanotube Bundles

Seok Kyu Cho, Gwan Yeong Jung, Keun Ho Choi, Jiyun Lee, Jong Tae Yoo, Sang Kyu Kwak, Sang Young Lee

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Lithium (Li) metal has garnered considerable attention in next-generation battery anodes. However, its environmental vulnerability, along with the electrochemical instability and safety failures, poses a formidable challenge to commercial use. Here, we describe a new class of antioxidative Li reservoir based on interstitial channels of single-walled carbon nanotube (SWCNT) bundles. The Li preferentially confined in the interstitial channels exhibits unusual thermodynamic stability and exceptional capacity even after exposure to harsh environmental conditions, thereby enabling us to propose a new lithiation/delithiation mechanism in carbon nanotubes. To explore practical application of this approach, the Li confined in the SWCNT bundles is electrochemically extracted and subsequently plated on a copper foil. The resulting Li-plated copper foil shows reliable charge/discharge behavior comparable to those of pristine Li foils. Benefiting from the confinement effect of the interstitial channels, the SWCNT bundles hold great promise as an environmentally tolerant, high-capacity Li reservoir.

Original languageEnglish
Pages (from-to)5879-5884
Number of pages6
JournalNano letters
Volume19
Issue number9
DOIs
Publication statusPublished - 2019 Sep 11

Bibliographical note

Publisher Copyright:
© 2019 American Chemical Society.

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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