title: Comment on "Cycling Li-O₂ batteries via LiOH formation and decomposition".
abstract: Liu et al (Research Article, 30 October 2015, p. 530) described a lithium-oxygen (Li-O2) battery based on lithium iodide (LiI)-assisted lithium hydroxide (LiOH) formation and decomposition. We argue that LiOH cannot be oxidized by triiodide (I3 (-)). The charge capacity is from the oxidation of I(-) instead of LiOH. The limited-capacity cycling test is misleading when the electrolyte contributes considerable parasitic reaction capacity.
authors.affiliation: State Key Laboratory of Material Processing and Die and Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China. shenyue1213@hust.edu.cn shulei@uow.edu.au.
authors.forename: Yue
authors.initials: Y
authors.lastname: Shen
authors.affiliation: State Key Laboratory of Material Processing and Die and Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China.
authors.forename: Wang
authors.initials: W
authors.lastname: Zhang
authors.affiliation: Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, Innovation Campus, Squires Way, North Wollongong NSW 2522, Australia. shenyue1213@hust.edu.cn shulei@uow.edu.au.
authors.forename: Shu-Lei
authors.initials: SL
authors.lastname: Chou
authors.affiliation: Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, Innovation Campus, Squires Way, North Wollongong NSW 2522, Australia.
authors.forename: Shi-Xue
authors.initials: SX
authors.lastname: Dou