Interplay between element-specific distortions and electrocatalytic oxygen evolution for cobalt-iron hydroxides.

ABSTRACT: A microscopic understanding of how Fe-doping of Co(OH)₂ improves electrocatalytic oxygen evolution remains elusive. We study two Co_1-x Fe _x (OH)₂ series that differ in fabrication protocol and find composition alone poorly correlates to catalyst performance. Structural descriptors extracted using X-ray diffraction, X-ray absorption spectroscopy, and Raman spectroscopy reveal element-specific distortions in Co_1-x Fe _x (OH)₂. These structural descriptors are composition-dependent within individual sample series but inconsistent across fabrication protocols, revealing fabrication-dependence in catalyst microstructure. Correlations between structural parameters from different techniques sho

SUBMITTER: Alsac EP 

PROVIDER: S-EPMC11367221 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature