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Towards Reversible and Moisture Tolerant Aprotic Lithium-Air Batteries

05 May 2020, Version 1
Working Paper
This content is a preprint and has not undergone peer review at the time of posting.

Abstract

The development of moisture-tolerant, LiOH-based non-aqueous Li-O2 batteries is a promising route to bypassing the inherent limitations caused by the instability of their typical discharge products, LiO2 and Li2O2. The use of the I-/I3- redox couple to mediate the LiOH-based oxygen reduction and oxidation reactions has proven challenging to develop due to the multiple reaction paths induced by the oxidation of I- on cell charging. In this work we demonstrate a reversible LiOH-based Li-O2 battery cycling through a 4 e-/O2 process with low charging overpotential (below 3.5 V vs Li/Li+) by introducing an ionic liquid to a glyme-based electrolyte containing LiI and water. The addition to the ionic liquid increases the oxidizing power of I3-, shifting the charging mechanism from IO-/IO3- formation to O2 evolution

Keywords

Batteries
Li-Air

Supplementary materials

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Now Published

Toward Reversible and Moisture-Tolerant Aprotic Lithium-Air Batteries [opens in a new tab]
Israel Temprano, Tao Liu, Enrico Petrucco, James H.J. Ellison, Gunwoo Kim, Erlendur Jónsson, Clare P. Grey journal article
Joule , Volume 4, Issue 11
Print publication date: Nov, 2020

Version History

May 05, 2020 Version 1

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The content is available under CC BY NC 4.0 [opens in a new tab]

DOI

10.26434/chemrxiv.12221717.v1
D O I: 10.26434/chemrxiv.12221717.v1 [opens in a new tab]

Funding

Innovate UK (132220)
EPSRC (EP/M009521/1 DJR00640)

Author’s competing interest statement

A version of this article is being under peer review for publication elsewhere.

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