Affiliation:
1. School of Chemical and Biological Engineering College of Engineering Institute of Chemical Processes Seoul National University (SNU) 1 Gwanak‐ro, Gwanak‐gu Seoul 08826 Republic of Korea
2. Center for Nanoparticle Research Institute of Basic Science (IBS) Seoul 08826 Republic of Korea
Abstract
AbstractDevelopment of robust electrocatalysts for the oxygen evolution reaction (OER) underpins the efficient production of green hydrogen via anion exchange membrane water electrolysis (AEMWE). This study elucidates the factors contributing to the degradation of cobalt‐based (Co‐based) OER catalysts synthesized via electrodeposition, thus establishing strategic approaches to enhance their longevity. Systematic variations in the electroplating process and subsequent heat treatment reveal a delicate balance between catalytic activity and durability, substantiated by comprehensive electrochemical assessments and material analyses. Building upon these findings, the Co‐based anode is successfully optimized in the AEMWE single‐cell configuration, showcasing an average degradation rate of 0.07 mV h−1 over a continuous operation for 1500 h at a current density of 1 A cm−2.
Funder
National Research Foundation of Korea
Subject
Biomaterials,Biotechnology,General Materials Science,General Chemistry