MnO_x/IrO_x as Selective Oxygen Evolution Electrocatalyst in Acidic Chloride Solution.

ABSTRACT: The oxygen evolution reaction (OER) and chlorine evolution reaction (CER) are electrochemical processes with high relevance to water splitting for (solar) energy conversion and industrial production of commodity chemicals, respectively. Carrying out the two reactions separately is challenging, since the catalytic intermediates are linked by scaling relations. Optimizing the efficiency of OER over CER in acidic media has proven especially difficult. In this regard, we have investigated the OER versus CER selectivity of manganese oxide (MnO_x), a known OER catalyst. Thin films (∼5-20 nm) of MnO_x were electrodeposited on glassy carbon-supported hydrous iridium oxide (IrO_x/GC) in aqueous chloride solutions of pH ∼0.9. Using rotating ring-disk electrode voltammet

SUBMITTER: Vos JG 

PROVIDER: S-EPMC6099550 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature