Be Aware of Transient Dissolution Processes in Co₃O₄ Acidic Oxygen Evolution Reaction Electrocatalysts.

ABSTRACT: Recently, cobalt-based oxides have received considerable attention as an alternative to expensive and scarce iridium for catalyzing the oxygen evolution reaction (OER) under acidic conditions. Although the reported materials demonstrate promising durability, they are not entirely intact, calling for fundamental research efforts to understand the processes governing the degradation of such catalysts. To this end, this work studies the dissolution mechanism of a model Co₃O₄ porous catalyst under different electrochemical conditions using online inductively coupled plasma mass spectrometry (online ICP-MS), identical location scanning transmission electron microscopy (IL-STEM), and differential electrochemical mass spectrometry (DEMS). Despite the high thermodynamics tend

SUBMITTER: Priamushko T 

PROVIDER: S-EPMC11783546 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature