title: Li-O2 battery with a dimethylformamide electrolyte.
abstract: Stability of the electrolyte toward reduced oxygen species generated at the cathode is a crucial challenge for the rechargeable nonaqueous Li-O(2) battery. Here, we investigate dimethylformamide as the basis of an electrolyte. Although  reactions at the O(2) cathode on the first discharge-charge cycle are dominated by reversible Li(2)O(2) formation/decomposition, there is also electrolyte decomposition, which increases on cycling. The products of decomposition at the cathode on discharge are Li(2)O(2), Li(2)CO(3), HCO(2)Li, CH(3)CO(2)Li, NO, H(2)O, and CO(2). Li(2)CO(3) accumulates in the electrode with cycling. The stability of dimethylformamide toward reduced oxygen species is insufficient for its use in the rechargeable nonaqueous Li-O(2) battery.
authors.affiliation: School of Chemistry, University of St. Andrews, North Haugh, St. Andrews, Fife KY16 9ST, United Kingdom.
authors.forename: Yuhui
authors.initials: Y
authors.lastname: Chen
authors.forename: Stefan A
authors.initials: SA
authors.lastname: Freunberger
authors.forename: Zhangquan
authors.initials: Z
authors.lastname: Peng
authors.forename: Fanny
authors.initials: F
authors.lastname: Bardé
authors.forename: Peter G
authors.initials: PG
authors.lastname: Bruce