Journal of the Electrochemical Society, volume 168, issue 3, pages 30520
Impact of Cathodic Electric Double Layer Composition on the Performance of Aprotic Li-O2 Batteries
2
Institute of Theoretical Chemistry, Ulm University, and Helmholtz Institute Ulm (HIU) Electrochemical Energy Storage, 89069 Ulm, Germany
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Publication type: Journal Article
Publication date: 2021-03-01
Quartile SCImago
Q1
Quartile WOS
Q2
Impact factor: 3.9
ISSN: 00134651, 19457111
Materials Chemistry
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Electrochemistry
Condensed Matter Physics
Renewable Energy, Sustainability and the Environment
Abstract
One of the difficulties limiting the development of high capacity Li-O2 batteries is the positive electrode passivation by the discharge product Li2O2 which is deposited mostly due to the second electron transfer of oxygen reductionwhich requires the presence of Li+ in the Stern layer. To suppress the passivation and shift the reaction zone of Li2O2 formation towards the electrolyte bulk, we propose to use additional cations in the electrolyte. Using molecular dynamics simulations, we investigate the ability of various cations to replace Li+ ions in the first cation layers near the electrode, with EMI+ (1-ethyl-3-methylimidazolium) and PP13+ (N-methyl-N-propylpiperidinium) showing pronounced effects. However, our experimental studies including cycling voltammetry and discharge capacity measurements in high and low donor number solvents reveal practically no effect of such addition. Therefore, Li+ should be fully eliminated from electron transfer zone, and this is possible by anchoring of additional cations according to the simulations. We optimized the surface density for these cations, although the experimental support of this approach looks challenging.
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- We do not take into account publications that without a DOI.
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Isaev V. V. et al. Impact of Cathodic Electric Double Layer Composition on the Performance of Aprotic Li-O2 Batteries // Journal of the Electrochemical Society. 2021. Vol. 168. No. 3. p. 30520.
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Isaev V. V., Sergeev A. V., Zakharchenko T. K., Itkis D., Gross A., Yashina L. V. Impact of Cathodic Electric Double Layer Composition on the Performance of Aprotic Li-O2 Batteries // Journal of the Electrochemical Society. 2021. Vol. 168. No. 3. p. 30520.
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TY - JOUR
DO - 10.1149/1945-7111/abe6ec
UR - https://doi.org/10.1149%2F1945-7111%2Fabe6ec
TI - Impact of Cathodic Electric Double Layer Composition on the Performance of Aprotic Li-O2 Batteries
T2 - Journal of the Electrochemical Society
AU - Isaev, Valerii V.
AU - Sergeev, Artem V.
AU - Zakharchenko, Tatiana Konstantinovna
AU - Itkis, Daniil
AU - Gross, Axel
AU - Yashina, Lada V.
PY - 2021
DA - 2021/03/01 00:00:00
PB - The Electrochemical Society
SP - 30520
IS - 3
VL - 168
SN - 0013-4651
SN - 1945-7111
ER -
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@article{2021_Isaev,
author = {Valerii V. Isaev and Artem V. Sergeev and Tatiana Konstantinovna Zakharchenko and Daniil Itkis and Axel Gross and Lada V. Yashina},
title = {Impact of Cathodic Electric Double Layer Composition on the Performance of Aprotic Li-O2 Batteries},
journal = {Journal of the Electrochemical Society},
year = {2021},
volume = {168},
publisher = {The Electrochemical Society},
month = {mar},
url = {https://doi.org/10.1149%2F1945-7111%2Fabe6ec},
number = {3},
pages = {30520},
doi = {10.1149/1945-7111/abe6ec}
}
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Isaev, Valerii V., et al. “Impact of Cathodic Electric Double Layer Composition on the Performance of Aprotic Li-O2 Batteries.” Journal of the Electrochemical Society, vol. 168, no. 3, Mar. 2021, p. 30520. https://doi.org/10.1149%2F1945-7111%2Fabe6ec.