An iron-base oxygen-evolution electrode for high-temperature electrolyzers.

ABSTRACT: High-temperature molten-salt electrolyzers play a central role in metals, materials and chemicals production for their merit of favorable kinetics. However, a low-cost, long-lasting, and efficient high-temperature oxygen evolution reaction (HT-OER) electrode remains a big challenge. Here we report an iron-base electrode with an in situ formed lithium ferrite scale that provides enhanced stability and catalytic activity in both high-temperature molten carbonate and chloride salts. The finding is stemmed from a discovery of the ionic potential-stability relationship and a basicity modulation principle of oxide films in molten salt. Using the iron-base electrode, we build a kiloampere-scale molten carbonate electrolyzer to efficiently convert CO₂ to carbon and oxygen. More broadly,

SUBMITTER: Du K 

PROVIDER: S-EPMC9845222 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature