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Modelling of operation of a lithium-air battery with ambient air and oxygen-selective membrane

Lookup NU author(s): One Sahapatsombut, Dr Hua Cheng, Professor Keith Scott

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This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).


Abstract

A macro-homogeneous model has been developed to evaluate the impact of replacing pure oxygen with ambient air on the performance of a rechargeable non-aqueous Li-air battery. The model exhibits a significant reduction in discharge capacity, e.g. from 1240 to 226 mAh g(carbon)(-1) at 0.05 mA cm(-2) when using ambient air rather than pure oxygen. The model correlates the relationship between the performance and electrolyte decomposition and formation of discharge products (such as Li2O2 and Li2CO3) under ambient air conditions. The model predicts a great benefit of using an oxygen-selective membrane on increasing capacity. The results indicate a good agreement between the experimental data and the model. (C) 2013 Elsevier B.V. All rights reserved.


Publication metadata

Author(s): Sahapatsombut U, Cheng H, Scott K

Publication type: Article

Publication status: Published

Journal: Journal of Power Sources

Year: 2014

Volume: 249

Pages: 418-430

Print publication date: 01/03/2014

Online publication date: 05/11/2013

Acceptance date: 24/10/2013

ISSN (print): 0378-7753

ISSN (electronic): 1873-2755

Publisher: Elsevier SA

URL: http://dx.doi.org/10.1016/j.jpowsour.2013.10.128

DOI: 10.1016/j.jpowsour.2013.10.128


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