Aprotic Li–O2 battery: Influence of complexing agents on oxygen reduction in an aprotic solvent

C. Li, O. Fontaine, S.A. Freunberger, L. Johnson, S. Grugeon, S. Laruelle, P.G. Bruce, M. Armand, The Journal of Physical Chemistry C 118 (2014) 3393–3401.

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Journal Article | Published | English
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Abstract
Several problems arise at the O2 (positive) electrode in the Li-air battery, including solvent/electrode decomposition and electrode passivation by insulating Li2O2. Progress partially depends on exploring the basic electrochemistry of O2 reduction. Here we describe the effect of complexing-cations on the electrochemical reduction of O2 in DMSO in the presence and absence of a Li salt. The solubility of alkaline peroxides in DMSO is enhanced by the complexing-cations, consistent with their strong interaction with reduced O2. The complexing-cations also increase the rate of the 1-electron O2 reduction to O2•– by up to six-fold (k° = 2.4 ×10–3 to 1.5 × 10–2 cm s–1) whether or not Li+ ions are present. In the absence of Li+, the complexing-cations also promote the reduction of O2•– to O22–. In the presence of Li+ and complexing-cations, and despite the interaction of the reduced O2 with the latter, SERS confirms that the product is still Li2O2.
Publishing Year
Date Published
2014-01-29
Journal Title
The Journal of Physical Chemistry C
Volume
118
Issue
7
Page
3393-3401
IST-REx-ID

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Li C, Fontaine O, Freunberger SA, et al. Aprotic Li–O2 battery: Influence of complexing agents on oxygen reduction in an aprotic solvent. The Journal of Physical Chemistry C. 2014;118(7):3393-3401. doi:10.1021/jp4093805
Li, C., Fontaine, O., Freunberger, S. A., Johnson, L., Grugeon, S., Laruelle, S., … Armand, M. (2014). Aprotic Li–O2 battery: Influence of complexing agents on oxygen reduction in an aprotic solvent. The Journal of Physical Chemistry C, 118(7), 3393–3401. https://doi.org/10.1021/jp4093805
Li, Chunmei, Olivier Fontaine, Stefan Alexander Freunberger, Lee Johnson, Sylvie Grugeon, Stéphane Laruelle, Peter G. Bruce, and Michel Armand. “Aprotic Li–O2 Battery: Influence of Complexing Agents on Oxygen Reduction in an Aprotic Solvent.” The Journal of Physical Chemistry C 118, no. 7 (2014): 3393–3401. https://doi.org/10.1021/jp4093805.
C. Li et al., “Aprotic Li–O2 battery: Influence of complexing agents on oxygen reduction in an aprotic solvent,” The Journal of Physical Chemistry C, vol. 118, no. 7, pp. 3393–3401, 2014.
Li C, Fontaine O, Freunberger SA, Johnson L, Grugeon S, Laruelle S, Bruce PG, Armand M. 2014. Aprotic Li–O2 battery: Influence of complexing agents on oxygen reduction in an aprotic solvent. The Journal of Physical Chemistry C. 118(7), 3393–3401.
Li, Chunmei, et al. “Aprotic Li–O2 Battery: Influence of Complexing Agents on Oxygen Reduction in an Aprotic Solvent.” The Journal of Physical Chemistry C, vol. 118, no. 7, ACS, 2014, pp. 3393–401, doi:10.1021/jp4093805.

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