Comment on “Cycling Li-O 2 batteries via LiOH formation and decomposition” | Zendy

Yue Shen | Zendy; Wang Zhang | Zendy; Shulei Chou | Zendy; Shi Xue Dou | Zendy

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

Author(s) -

Yue Shen,

Wang Zhang,

Shulei Chou,

Shi Xue Dou

Publication year - 2016

Publication title -

science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 12.556

H-Index - 1186

eISSN - 1095-9203

pISSN - 0036-8075

DOI - 10.1126/science.aaf1399

Subject(s) - electrolyte , lithium hydroxide , decomposition , cycling , lithium (medication) , lithium iodide , iodide , chemistry , inorganic chemistry , ion , electrode , organic chemistry , medicine , archaeology , ion exchange , history , endocrinology

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.

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