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

9 Citations (Scopus)


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
Issue number6
Publication statusPublished - 3 Jun 2020


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

ASJC Scopus subject areas

  • Materials Science(all)

Cite this