Pyrochlore‐Type Bi 2 Ru 2 O 7 With Regulated Local Electronic Structure for Efficient Oxygen Evolution Reaction
Source abstract
Abstract
ABSTRACT Anion‐exchange membrane water electrolysis (AEMWE) represents a prospective technology for hydrogen production but suffers from the lack of efficient oxygen evolution electrocatalysts with high activity, robust stability, and reduced cost. Herein, we report pyrochlore‐type bismuth ruthenates (Bi 2 Ru 2 O 7 , BRO) as promising electrocatalysts for oxygen evolution reaction (OER), which exhibits more than 20 times higher OER activity than RuO 2 yet with 48.3 wt.% less Ru content. The high intrinsic activity of BRO originates from the regulated local electronic structure of Ru sites by Bi, optimizing the adsorption behavior of oxygen intermediates and thus boosting the OER kinetics. Moreover, the assembled AEM electrolyzer with BRO as the anode can show a higher energy saving efficiency and a slower activity decay over a 120‐h continuous operation in comparison to RuO 2 electrolyzer.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Electrocatalysts for Energy Conversion · Hybrid Renewable Energy Systems · Ammonia Synthesis and Nitrogen Reduction
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
College of Materials Science and Engineering Jiangsu Collaborative Innovation Centre for Advanced Inorganic Function Composites Nanjing Tech University Nanjing China
Co‐Innovation Centre of Efficient Processing and Utilization of Forest Resources, College of Materials Science and Engineering Nanjing Forestry University Nanjing China
China Huaneng Clean Energy Research Institute Future Science Park Beijing China
Institute of Material and Chemistry Ganjiang Innovation Academy Chinese Academy of Sciences Ganzhou China
Funding
National Natural Science Foundation of China
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