A Novel Electrode for Value‐Generating Anode Reactions in Water Electrolyzers at Industrial Current Densities

作者：Changlong Wang, Yufeng Wu, Alexander Bodach, Moritz Lukas Krebs, Wolfgang Schuhmann, Ferdi Schüth · 发表于：Angewandte Chemie International Edition · 年份：2022 · DOI：10.1002/anie.202215804 · 被引用次数：108 · 研究领域：Electrocatalysts for Energy Conversion、Advanced battery technologies research、Hybrid Renewable Energy Systems

Abstract Hydrogen generated in electrolyzers is discussed as a key element in future energy scenarios, but oxygen evolution as the standard anode reaction is a complex multi‐step reaction requiring a high overpotential. At the same time,it does not add value‐the oxygen is typically released into the atmosphere. Alternative anode reactions which can proceed at similar current densities as the hydrogen evolution are, therefore, of highest interest. We have discovered a high‐performance electrode based on earth‐abundant elements synthesized in the presence of H2O2, which is able to sustain current densities of close to 1 A cm−2 for the oxidation of many organic molecules, which are partly needed at high production volumes. Such anode reactions could generate additional revenue streams, which help to solve one of the most important problems in the transition to renewable energy systems, i.e. the cost of hydrogen electrolysis.