Organogermanium nanowire cathodes for efficient lithium-oxygen batteries

Gwang Hee Lee, Myeong Chang Sung, Yoon Seon Kim, Bobae Ju, Dong Wan Kim

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

We report a technique for effectively neutralizing the generation of harmful superoxide species, the source of parasitic reactions, in lithium-oxygen batteries to generate stable substances. In organic electrolytes, organogermanium (Propa-germanium, Ge-132) nanowires can suppress solvated superoxide and induce strong surface-adsorption reaction due to their high anti-superoxide disproportionation activity. Resultantly, the effect of organogermanium nanowires mitigate toxic oxidative stress to stabilize organic electrolytes and promote good Li2O2 growth. These factors led to long duration of the electrolytes and impressive rechargeability of lithium-oxygen batteries.

Original languageEnglish
Pages (from-to)15894-15903
Number of pages10
JournalACS nano
Volume14
Issue number11
DOIs
Publication statusPublished - 2020 Nov 24

Bibliographical note

Funding Information:
This work was supported by a Korea University Grant and the National Research Foundation of Korea (NRF) Grant funded by the Ministry of Science, ICT, and Future Planning [NRF-2017R1C1B2004869, 2019R1A2B5B02070203, and 2018M3D1A1058744].

Publisher Copyright:
© 2020 American Chemical Society.

Keywords

  • Anti-superoxide disproportionation
  • LiO growth
  • Lithium-oxygen battery
  • Organogermanium nanowires
  • Surface-adsorption reaction

ASJC Scopus subject areas

  • General Materials Science
  • General Engineering
  • General Physics and Astronomy

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