title: A Bifunctional Electrocatalyst for Oxygen Evolution and Oxygen Reduction Reactions in Water.
abstract: Oxygen reduction and water oxidation are two key processes in fuel cell applications. The oxidation of water to dioxygen is a 4 H(+)/4 e(-) process, while oxygen can be fully reduced to water by a 4 e(-)/4 H(+) process or partially reduced by fewer electrons to reactive oxygen species such as H2O2 and O2(-). We demonstrate that a novel manganese corrole complex behaves as a bifunctional catalyst for both the electrocatalytic generation of dioxygen as well as the reduction of dioxygen in aqueous media. Furthermore, our combined kinetic, spectroscopic, and electrochemical study of manganese corroles adsorbed on different electrode materials (down to a submolecular level) reveals mechanistic details of the oxygen evolution and reduction processes.
authors.affiliation: Institute of Organic Chemistry, Johannes Kepler University Linz, Altenberger Strasse 69, 4040, Linz, Austria. wolfgang.schoefberger@jku.at.
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Schöfberger
authors.affiliation: Institute of Organic Chemistry, Johannes Kepler University Linz, Altenberger Strasse 69, 4040, Linz, Austria.
authors.forename: Felix
authors.initials: F
authors.lastname: Faschinger
authors.affiliation: Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, 2A & 2B Raja SC Mullik Road, Kolkata, 700032, India.
authors.forename: Samir
authors.initials: S
authors.lastname: Chattopadhyay
authors.affiliation: Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, 2A & 2B Raja SC Mullik Road, Kolkata, 700032, India.
authors.forename: Snehadri
authors.initials: S
authors.lastname: Bhakta
authors.affiliation: Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, 2A & 2B Raja SC Mullik Road, Kolkata, 700032, India.
authors.forename: Biswajit
authors.initials: B
authors.lastname: Mondal
authors.affiliation: Radboud University, Institute for Molecules and Materials, Heyendaalseweg 135, 6525, AJ Nijmegen, The Netherlands.
authors.forename: Johannes A A W
authors.initials: JA
authors.lastname: Elemans
authors.affiliation: Institute of Semiconductor and Solid State Physics, Johannes Kepler University Linz, Altenberger Strasse 69, 4040, Linz, Austria.
authors.forename: Stefan
authors.initials: S
authors.lastname: Müllegger
authors.affiliation: Institute of Semiconductor and Solid State Physics, Johannes Kepler University Linz, Altenberger Strasse 69, 4040, Linz, Austria.
authors.forename: Stefano
authors.initials: S
authors.lastname: Tebi
authors.affiliation: Institute of Semiconductor and Solid State Physics, Johannes Kepler University Linz, Altenberger Strasse 69, 4040, Linz, Austria.
authors.forename: Reinhold
authors.initials: R
authors.lastname: Koch
authors.affiliation: Physics Department E20, Technische Universität München, James-Franck-Strasse 1, 85748, Garching, Germany.
authors.forename: Florian
authors.initials: F
authors.lastname: Klappenberger
authors.affiliation: Physics Department E20, Technische Universität München, James-Franck-Strasse 1, 85748, Garching, Germany.
authors.forename: Mateusz
authors.initials: M
authors.lastname: Paszkiewicz
authors.affiliation: Physics Department E20, Technische Universität München, James-Franck-Strasse 1, 85748, Garching, Germany.
authors.forename: Johannes V
authors.initials: JV
authors.lastname: Barth
authors.affiliation: Department of Physics, Paderborn University, Warburger Strasse 100, 33098, Paderborn, Germany.
authors.forename: Eva
authors.initials: E
authors.lastname: Rauls
authors.affiliation: Department of Physics, Paderborn University, Warburger Strasse 100, 33098, Paderborn, Germany.
authors.forename: Hazem
authors.initials: H
authors.lastname: Aldahhak
authors.affiliation: Department of Physics, Paderborn University, Warburger Strasse 100, 33098, Paderborn, Germany.
authors.forename: Wolf Gero
authors.initials: WG
authors.lastname: Schmidt
authors.affiliation: Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, 2A & 2B Raja SC Mullik Road, Kolkata, 700032, India. abbeyde@gmail.com.
authors.forename: Abhishek
authors.initials: A
authors.lastname: Dey
keywords: corroles; electrochemistry; manganese; oxygen evolution; oxygen reduction