Enhancing CO₂ electrolysis through synergistic control of non-stoichiometry and doping to tune cathode surface structures.

ABSTRACT: Sustainable future energy scenarios require significant efficiency improvements in both electricity generation and storage. High-temperature solid oxide cells, and in particular carbon dioxide electrolysers, afford chemical storage of available electricity that can both stabilize and extend the utilization of renewables. Here we present a double doping strategy to facilitate CO₂ reduction at perovskite titanate cathode surfaces, promoting adsorption/activation by making use of redox active dopants such as Mn linked to oxygen vacancies and dopants such as Ni that afford metal nanoparticle exsolution. Combined experimental characterization and first-principle calculations reveal that the adsorbed and activated CO₂ adopts an intermediate chemical state between a carbon d

SUBMITTER: Ye L 

PROVIDER: S-EPMC5357311 | biostudies-literature | 2017 Mar

REPOSITORIES: biostudies-literature