pH and Anion Effects on Cu-Phosphate Interfaces for CO Electroreduction

31 July 2020, Version 1
This content is a preprint and has not undergone peer review at the time of posting.

Abstract

Herein, we have investigated the interfacial properties of Cu(111) and Cu(100) in phosphate buffer solutions at different pH conditions and in presence of CO. Ab initio molecular simulations of the Cu-electrolyte interface were combined with voltammetric experiments carried out on Cu(100) and Cu(111) single-crystalline electrodes. We show that the adsorption strength of phosphate species on the different Cu facets affects the potential range at which CO poisons the surface. The properties of the Cu-electrolyte interface controls the potential range for CO reduction on Cu.

Keywords

Electrochemical interface
electrocatalysis
CO reduction
cyclic voltammetry
ab initio molecular simulations

Supplementary materials

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SI CO Cu paper 30200720 final (1)
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30200720Cu CO paper final (3)
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SI CO Cu paper 30200720 final (1)
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