Recent Advances on Ruthenium-Based Electrocatalysts for Lithium-Oxygen Batteries

Authors

Yu-Zhe Wang, Frontiers Science Center for New Organic Matter, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, China
Zhuo-Liang Jiang, Frontiers Science Center for New Organic Matter, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, China
Bo Wen, Frontiers Science Center for New Organic Matter, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, China
Yao-Hui Huang, Frontiers Science Center for New Organic Matter, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, China
Fu-Jun Li, Frontiers Science Center for New Organic Matter, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, China; Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, China

Document Type

Review

Corresponding Author(s)

Fu-Jun Li (fujunli@nankai.edu.cn)

Abstract

Rechargeable lithium-oxygen (Li-O₂) batteries have attracted wide attention due to their high energy density. However, the sluggish cathode kinetics results in high overvoltages and poor cycling performance. Ruthenium (Ru)-based electrocatalysts have been demonstrated to be promising cathode catalysts to promote oxygen evolution reaction (OER). It facilitates lithium peroxide (Li₂O₂) decomposition by adjusting Li₂O₂ morphologies, which is due to the strong interaction between Ru-based catalyst and superoxide anion (O₂^-) intermediate. In this review, the design strategies of Ru-based electrocatalysts are introduced to enhance their OER catalytic kinetics in Li-O₂ batteries. Different configurations of Ru-based catalysts, including metal particles (Ru metal and alloys), single-atom catalysts, and Ru-loaded compounds with various substrates (carbon materials, metal oxides/sulfides), have been summarized to regulate the electronic structure and the matrix architecture of the Ru-based electrocatalysts. The Ru-based catalyst structure-property relationship is discussed for a better understanding of the Li₂O₂ decomposition mechanism at the cathode interface. Finally, the challenges of Ru-based electrocatalysts are proposed for the future development of Li-O₂ batteries.

Graphical Abstract

Keywords

Li-O2 battery, Ru-based electrocatalyst, Reaction mechanism, Reaction kinetics, overvoltage

DOI

10.61558/2993-074X.3466

Online Date

4-29-2024

Recommended Citation

Yu-Zhe Wang, Zhuo-Liang Jiang, Bo Wen, Yao-Hui Huang, Fu-Jun Li. Recent Advances on Ruthenium-Based Electrocatalysts for Lithium-Oxygen Batteries[J]. Journal of Electrochemistry, doi: 10.61558/2993-074X.3466.