Breaking the Bottleneck of Activity and Stability of RuO<sub>2</sub>-Based Electrocatalysts for Acidic Oxygen Evolution.
review · Level V
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- Record sourced from PubMed, PMID 39268754.
- Also identified by DOI 10.1021/acs.nanolett.4c03643.
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Abstract
Electrochemical acidic oxygen evolution reaction (OER) is an important part for water electrolysis utilizing a proton exchange membrane (PEM) apparatus for industrial H<sub>2</sub> production. RuO<sub>2</sub> has garnered considerable attention as a potential acidic OER electrocatalyst. However, the overoxidation of Ru active sites under high potential conditions is usually harmful for activity and stability, thereby posing a challenge for large-scale commercialization, which needs effective strategies to circumvent the leaching of Ru and further activate Ru sites. Herein, a Mini-Review is presented to summarize the recent developments regarding the activation and stabilization of the Ru active sites and lattice oxygen through the modulation of the d-band center, coordination environment, bridged heteroatoms, and vacancy engineering, as well as structural protection strategies and reaction pathway optimization to promote the acidic OER activity and stability of RuO<sub>2</sub>-based electrocatalysts. This Mini-Review offers a profound understanding of the design of RuO<sub>2</sub>-based electrocatalysts with greatly enhanced acidic OER performances.