title: Communications: Elementary oxygen electrode reactions in the aprotic Li-air battery.
abstract: We discuss the electrochemical reactions at the oxygen electrode of an aprotic Li-air battery. Using density functional theory to estimate the free energy of intermediates during the discharge and charge of the battery, we introduce a reaction free energy diagram and identify possible origins of the overpotential for both processes. We also address the question of electron conductivity through the Li(2)O(2) electrode and show that in the presence of Li vacancies Li(2)O(2) becomes a conductor.
authors.affiliation: Department of Physics, Center for Atomic-scale Materials Design, Technical University of Denmark, DK-2800 Lyngby, Denmark.
authors.forename: J S
authors.initials: JS
authors.lastname: Hummelshøj
authors.forename: J
authors.initials: J
authors.lastname: Blomqvist
authors.forename: S
authors.initials: S
authors.lastname: Datta
authors.forename: T
authors.initials: T
authors.lastname: Vegge
authors.forename: J
authors.initials: J
authors.lastname: Rossmeisl
authors.forename: K S
authors.initials: KS
authors.lastname: Thygesen
authors.forename: A C
authors.initials: AC
authors.lastname: Luntz
authors.forename: K W
authors.initials: KW
authors.lastname: Jacobsen
authors.forename: J K
authors.initials: JK
authors.lastname: Nørskov