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Thick Sintered Electrode Lithium-Ion Battery Discharge Simulations: Incorporating Lithiation-Dependent Electronic Conductivity and Lithiation Gradient Due to Charge Cycle

In efforts to increase the energy density of lithium-ion batteries, researchers have attempted to both increase the thickness of battery electrodes and increase the relative fractions of active material. One system that has both of these attributes are sintered thick electrodes comprised of only act...

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Autores principales: Cai, Chen, Nie, Ziyang, Robinson, J. Pierce, Hussey, Daniel S., LaManna, Jacob M., Jacobson, David L., Koenig, Gary M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8647443/
https://www.ncbi.nlm.nih.gov/pubmed/34876705
http://dx.doi.org/10.1149/1945-7111/abc747
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author Cai, Chen
Nie, Ziyang
Robinson, J. Pierce
Hussey, Daniel S.
LaManna, Jacob M.
Jacobson, David L.
Koenig, Gary M.
author_facet Cai, Chen
Nie, Ziyang
Robinson, J. Pierce
Hussey, Daniel S.
LaManna, Jacob M.
Jacobson, David L.
Koenig, Gary M.
author_sort Cai, Chen
collection PubMed
description In efforts to increase the energy density of lithium-ion batteries, researchers have attempted to both increase the thickness of battery electrodes and increase the relative fractions of active material. One system that has both of these attributes are sintered thick electrodes comprised of only active material. Such electrodes have high areal capacities, however, detailed understanding is needed of their transport properties, both electronic and ionic, to better quantify their limitations to cycling at higher current densities. In this report, efforts to improve models of the electrochemical cycling of sintered electrodes are described, in particular incorporation of matrix electronic conductivity which is dependent on the extent of lithiation of the active material and accounting for initial gradients in lithiation of active material in the electrode that develop as a consequence of transport limitations during charging cycles. Adding in these additional considerations to a model of sintered electrode discharge resulted in improved matching of experimental cell measurements.
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spelling pubmed-86474432021-12-06 Thick Sintered Electrode Lithium-Ion Battery Discharge Simulations: Incorporating Lithiation-Dependent Electronic Conductivity and Lithiation Gradient Due to Charge Cycle Cai, Chen Nie, Ziyang Robinson, J. Pierce Hussey, Daniel S. LaManna, Jacob M. Jacobson, David L. Koenig, Gary M. J Electrochem Soc Article In efforts to increase the energy density of lithium-ion batteries, researchers have attempted to both increase the thickness of battery electrodes and increase the relative fractions of active material. One system that has both of these attributes are sintered thick electrodes comprised of only active material. Such electrodes have high areal capacities, however, detailed understanding is needed of their transport properties, both electronic and ionic, to better quantify their limitations to cycling at higher current densities. In this report, efforts to improve models of the electrochemical cycling of sintered electrodes are described, in particular incorporation of matrix electronic conductivity which is dependent on the extent of lithiation of the active material and accounting for initial gradients in lithiation of active material in the electrode that develop as a consequence of transport limitations during charging cycles. Adding in these additional considerations to a model of sintered electrode discharge resulted in improved matching of experimental cell measurements. 2020-11-16 /pmc/articles/PMC8647443/ /pubmed/34876705 http://dx.doi.org/10.1149/1945-7111/abc747 Text en https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 License (CC BY, http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) ), which permits unrestricted reuse of the work in any medium, provided the original work is properly cited.
spellingShingle Article
Cai, Chen
Nie, Ziyang
Robinson, J. Pierce
Hussey, Daniel S.
LaManna, Jacob M.
Jacobson, David L.
Koenig, Gary M.
Thick Sintered Electrode Lithium-Ion Battery Discharge Simulations: Incorporating Lithiation-Dependent Electronic Conductivity and Lithiation Gradient Due to Charge Cycle
title Thick Sintered Electrode Lithium-Ion Battery Discharge Simulations: Incorporating Lithiation-Dependent Electronic Conductivity and Lithiation Gradient Due to Charge Cycle
title_full Thick Sintered Electrode Lithium-Ion Battery Discharge Simulations: Incorporating Lithiation-Dependent Electronic Conductivity and Lithiation Gradient Due to Charge Cycle
title_fullStr Thick Sintered Electrode Lithium-Ion Battery Discharge Simulations: Incorporating Lithiation-Dependent Electronic Conductivity and Lithiation Gradient Due to Charge Cycle
title_full_unstemmed Thick Sintered Electrode Lithium-Ion Battery Discharge Simulations: Incorporating Lithiation-Dependent Electronic Conductivity and Lithiation Gradient Due to Charge Cycle
title_short Thick Sintered Electrode Lithium-Ion Battery Discharge Simulations: Incorporating Lithiation-Dependent Electronic Conductivity and Lithiation Gradient Due to Charge Cycle
title_sort thick sintered electrode lithium-ion battery discharge simulations: incorporating lithiation-dependent electronic conductivity and lithiation gradient due to charge cycle
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8647443/
https://www.ncbi.nlm.nih.gov/pubmed/34876705
http://dx.doi.org/10.1149/1945-7111/abc747
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