title: A Dendritic Nanostructured Copper Oxide Electrocatalyst for the Oxygen Evolution Reaction.
abstract: To use water as the source of electrons for proton or CO2reduction within electrocatalytic devices, catalysts are required for facilitating the proton-coupled multi-electron oxygen evolution reaction (OER, 2 H2O→O2+4 H++4 e-). These catalysts, ideally based on cheap and earth abundant metals, have to display high activity at low overpotential and good stability and selectivity. While numerous examples of Co, Mn, and Ni catalysts were recently reported for water oxidation, only few examples were reported using copper, despite promising efficiencies. A rationally designed nanostructured copper/copper oxide electrocatalyst for OER is presented. This material derives from conductive copper foam passivated by a copper oxide layer and further nanostructured by electrodeposition of CuO nanoparticles. The generated electrodes are highly efficient for catalyzing selective water oxidation to dioxygen with an overpotential of 290 mV at 10 mA cm-2in 1 m NaOH solution.
authors.affiliation: Laboratoire de Chimie des Processus Biologiques, CNRS UMR 8229, Collège de France, UPMC Univ Paris 06, 11 Place Marcelin Berthelot, 75231, Paris Cedex 05, France.
authors.forename: Tran Ngoc
authors.initials: TN
authors.lastname: Huan
authors.affiliation: Laboratoire de Chimie du Solide et Energie, UMR 8260, Collège de France, 11 Place Marcelin Berthelot, 75231, Paris Cedex 05, France.|Sorbonne Universités, UPMC Univ Paris 06, 4 place Jussieu, 75005, Paris, France.
authors.forename: Gwenaëlle
authors.initials: G
authors.lastname: Rousse
authors.affiliation: Chimie ParisTech, PSL Research University, CNRS, Institut de Recherche de Chimie Paris (IRCP), 11 rue Pierre et Marie Curie, 75005, Paris, France.
authors.forename: Sandrine
authors.initials: S
authors.lastname: Zanna
authors.affiliation: Laboratoire Interfaces et Systèmes Electrochimiques, UMR 8235, Sorbonne Universités, UPMC Univ Paris 06, 4 place Jussieu, 75005, Paris, France.
authors.forename: Ivan T
authors.initials: IT
authors.lastname: Lucas
authors.affiliation: Laboratoire de Physique et d'Etude des Matériaux, CNRS, ESPCI Paris, PSL Research University, UPMC Univ Paris 06, Sorbonne-Universitiés, 10 Rue Vauquelin, 75005, Paris, France.
authors.forename: Xiangzhen
authors.initials: X
authors.lastname: Xu
authors.affiliation: Institut de Minéralogie et de Physique des Milieux Condensés, UMR 7590 CNRS, Sorbonne Universités, UPMC Univ Paris 06, 4 place Jussieu, 75005, Paris, France.
authors.forename: Nicolas
authors.initials: N
authors.lastname: Menguy
authors.affiliation: Laboratoire de Chimie des Processus Biologiques, CNRS UMR 8229, Collège de France, UPMC Univ Paris 06, 11 Place Marcelin Berthelot, 75231, Paris Cedex 05, France.
authors.forename: Victor
authors.identifier: 0000-0003-4136-7442
authors.initials: V
authors.lastname: Mougel
authors.affiliation: Laboratoire de Chimie des Processus Biologiques, CNRS UMR 8229, Collège de France, UPMC Univ Paris 06, 11 Place Marcelin Berthelot, 75231, Paris Cedex 05, France.
authors.forename: Marc
authors.identifier: 0000-0002-8016-4747
authors.initials: M
authors.lastname: Fontecave
keywords: copper oxide; electrocatalysis; electrodeposition; porous electrode; water oxidation