Oxygen Evolution Reaction in Alkaline Environment: Material Challenges and Solutions

Abstract The oxygen evolution reaction (OER) generally exists in electrochemistry‐enabled applications that are coupled with cathodic reactions like hydrogen evolution, carbon dioxide reduction, ammonia synthesis, and electrocatalytic hydrogenation. The OER heavily impacts the overall energy efficiency of these devices because the sluggish OER kinetics result in a huge overpotential, thus, a large amount of efficient catalysts are needed. The benchmark iridium and ruthenium (Ir/Ru)‐based materials (mostly used in acid media) are, however, significantly limited by their scarcity. Non‐precious metal‐based catalysts (NPMCs) have emerged as the most promising alternatives; however, they tend to degrade quickly…

• UD
  U.S. Department of Energy

  Awards: DE‐AC05‐76RLO1830, DE-AC05, DE-AC05-76RLO1830
• B
  Battelle

  Awards: DE-AC05-76RLO1830, DE-AC05
• NN
  National Natural Science Foundation of China

  Awards: 21805064, DE-AC05-76RLO1830
• NS
  Natural Science Foundation of Guangdong Province
• PN
  Pacific Northwest National Laboratory

  Award: DE-AC05-76RLO1830