Crystallographic and Geometrical Dependence of Water Oxidation Activity in Co-Based Layered Hydroxides.

ABSTRACT: Cobalt-based layered hydroxides (LHs) stand out as one of the best families of electroactive materials for the alkaline oxygen evolution reaction (OER). However, fundamental aspects such as the influence of the crystalline structure and its connection with the geometry of the catalytic sites remain poorly understood. Thus, to address this topic, we have conducted a thorough experimental and in silico study on the most important divalent Co-based LHs (i.e., α-LH, β-LH, and LDH), which allows us to understand the role of the layered structure and coordination environment of divalent Co atoms on the OER performance. The α-LH, containing both octahedral and tetrahedral sites, behaves as the best OER catalyst in comparison to the other phases, pointing out the role of the chemical nature of the

SUBMITTER: Sanchis-Gual R 

PROVIDER: S-EPMC10407849 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature