Active and conductive layer stacked superlattices for highly selective CO₂ electroreduction.

ABSTRACT: Metal oxides are archetypal CO₂ reduction reaction electrocatalysts, yet inevitable self-reduction will enhance competitive hydrogen evolution and lower the CO₂ electroreduction selectivity. Herein, we propose a tangible superlattice model of alternating metal oxides and selenide sublayers in which electrons are rapidly exported through the conductive metal selenide layer to protect the active oxide layer from self-reduction. Taking BiCuSeO superlattices as a proof-of-concept, a comprehensive characterization reveals that the active [Bi₂O₂]²⁺ sublayers retain oxidation states rather than their self-reduced Bi metal during CO₂ electroreduction because of the rapid electron transfer through the conductive [Cu₂Se

SUBMITTER: Duan J 

PROVIDER: S-EPMC9018841 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature