Comment on 'Cycling Li-O-2 batteries via LiOH formation and decomposition'

摘要

Liu et al. (Research Article, 30 October 2015, p. 530) described a lithium-oxygen (Li-O-2) battery based on lithium iodide (LiI)-assisted lithium hydroxide (LiOH) formation and decomposition. We argue that LiOH cannot be oxidized by triiodide (I-3(-)). 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.