Ultrathin RuRh Alloy Nanosheets Enable High-Performance Lithium-CO2 Battery

Yi Xing, Kai Wang, Na Li, Dong Su, Wing Tak Wong, Bolong Huang (Corresponding Author), Shaojun Guo

Research output: Journal article publicationJournal articleAcademic researchpeer-review

14 Citations (Scopus)

Abstract

Ultrathin triangular RuRh alloy nanosheets have been successfully synthesized, and demonstrated as an exceptionally active catalyst for significantly activating CO2 reduction and evolution reactions, which endow the Li-CO2 battery with superior cycling performance and rate capability. At 1,000 mA g−1, the Li-CO2 battery with RuRh catalysts can stably discharge and charge up to 180 cycles without capacity decay, and the voltage gap of terminal discharge and charge potentials is only 1.35 V and still below 1.60 V at the 180th cycle, which is the best rate capability reported to date. Alloying Ru with Rh can impose a high activity in electron transfer of surface Ru, thus not only favoring CO2 reduction and Li2CO3 nucleation but also facilitating Li2CO3 decomposition. In such a scenario, the Li-CO2 battery composed of ultrathin RuRh alloy nanosheets provides a promising strategy to concurrently achieve highly renewable energy-storage devices and greenhouse gas utilization.

Original languageEnglish
Pages (from-to)1494-1508
Number of pages15
JournalMatter
Volume2
Issue number6
DOIs
Publication statusPublished - 3 Jun 2020

Keywords

  • cycle life
  • lithium-CO battery
  • MAP5: Improvement
  • overpotential
  • rate capability
  • RuRh alloy nanosheet

ASJC Scopus subject areas

  • Materials Science(all)

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