On the role of microkinetic network structure in the interplay between oxygen evolution reaction and catalyst dissolution.

ABSTRACT: Understanding the pathways of oxygen evolution reaction (OER) and the mechanisms of catalyst degradation is of essential importance for developing efficient and stable OER catalysts. Experimentally, a close coupling between OER and catalyst dissolution on metal oxides is reported. In this work, it is analysed how the microkinetic network structure of a generic electrocatalytic cycle, in which a common intermediate causes catalyst dissolution, governs the interplay between electrocatalytic activity and stability. Model discrimination is possible based on the analysis of incorporated microkinetic network structures and the comparison to experimental data. The derived concept is used to analyse the coupling of OER and catalyst dissolution on rutile and reactively sputtered Iridium oxides. For

SUBMITTER: Dam AP 

PROVIDER: S-EPMC7445268 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature