Bio-inspired design: bulk iron-nickel sulfide allows for efficient solvent-dependent CO₂ reduction.

ABSTRACT: The electrocatalytic reduction of carbon dioxide (CO₂RR) to valuable bulk chemicals is set to become a vital factor in the prevention of environmental pollution and the selective storage of sustainable energy. Inspired by structural analogues to the active site of the enzyme CODH_Ni, we envisioned that bulk Fe/Ni sulfides would enable the efficient reduction of CO₂. By careful adjustment of the process conditions, we demonstrate that pentlandite (Fe_4.5Ni_4.5S₈) electrodes, in addition to HER, also support the CO₂RR reaching a peak faradaic efficiency of 87% and 13% for the formation of CO and methane, respectively at 3 mA cm^-2. The choice of solvent, the presence of water/protons and CO₂ solubi

SUBMITTER: Piontek S 

PROVIDER: S-EPMC6346401 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature