title: A novel aqueous lithium-oxygen cell based on the oxygen-peroxide redox couple.
abstract: The electrochemical process of an aqueous Li-O2 cell is investigated. Li2O2 is detected as a discharge product of an aqueous Li-O2 cell using a catalyst-free carbon-based electrode. The electrolyte solution saturated with lithium hydroxide prevents hydrolysis of the Li2O2. Since the electron transfer process is based on the oxygen-peroxide redox couple, the galvanostatic charging-discharging profile shows stable cycling with an extremely low charging overpotential of <0.1 V at 1.0 mA cm(-2).
authors.affiliation: Japan Science and Technology Agency, PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan.
authors.forename: Masaki
authors.initials: M
authors.lastname: Matsui
authors.forename: Ayumi
authors.initials: A
authors.lastname: Wada
authors.forename: Yasuaki
authors.initials: Y
authors.lastname: Matsuda
authors.forename: Osamu
authors.initials: O
authors.lastname: Yamamoto
authors.forename: Yasuo
authors.initials: Y
authors.lastname: Takeda
authors.forename: Nobuyuki
authors.initials: N
authors.lastname: Imanishi