Effects of cycling on lithium-ion battery hysteresis and overvoltage

Currently, lithium-ion batteries are widely used as energy storage systems for mobile applications. However, a better understanding of their nature is still required to improve battery management systems (BMS). Overvoltages and open-circuit voltage (OCV) hysteresis provide valuable information regar...

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Autores: Ovejas Benedicto, Victòria Júlia|||0000-0002-7725-7299, Cuadras Tomàs, Àngel|||0000-0002-4540-6640
Tipo de recurso: artículo
Fecha de publicación:2019
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/180886
Acceso en línea:https://hdl.handle.net/2117/180886
https://dx.doi.org/10.1038/s41598-019-51474-5
Access Level:acceso abierto
Palabra clave:Overvoltage
Lithium ion batteries
Hysteresis
Lithium batteries
Bateries d'ió liti
Histèresi
Àrees temàtiques de la UPC::Enginyeria electrònica
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spelling Effects of cycling on lithium-ion battery hysteresis and overvoltageOvejas Benedicto, Victòria Júlia|||0000-0002-7725-7299Cuadras Tomàs, Àngel|||0000-0002-4540-6640OvervoltageLithium ion batteriesHysteresisHysteresisLithium batteriesBateries d'ió litiHistèresiÀrees temàtiques de la UPC::Enginyeria electrònicaCurrently, lithium-ion batteries are widely used as energy storage systems for mobile applications. However, a better understanding of their nature is still required to improve battery management systems (BMS). Overvoltages and open-circuit voltage (OCV) hysteresis provide valuable information regarding battery performance, but estimations of these parameters are generally inaccurate, leading to errors in BMS. Studies on hysteresis are commonly avoided because the hysteresis depends on the state of charge and degradation level and requires time-consuming measurements. We have investigated hysteresis and overvoltages in Li(NiMnCo)O2/graphite and LiFePO4/graphite commercial cells. Here we report a direct relationship between an increase in OCV hysteresis and an increase in charge overvoltage when the cells are degraded by cycling. We fnd that the hysteresis is related to difusion and increases with the formation of pure phases, being primarily related to the graphite electrode. These fndings indicate that the graphite electrode is a determining factor for cell efciency.Peer ReviewedNature20192019-10-1620202020-03-23journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/180886https://dx.doi.org/10.1038/s41598-019-51474-5reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivs 3.0 Spainhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/1808862026-05-27T15:37:01Z
dc.title.none.fl_str_mv Effects of cycling on lithium-ion battery hysteresis and overvoltage
title Effects of cycling on lithium-ion battery hysteresis and overvoltage
spellingShingle Effects of cycling on lithium-ion battery hysteresis and overvoltage
Ovejas Benedicto, Victòria Júlia|||0000-0002-7725-7299
Overvoltage
Lithium ion batteries
Hysteresis
Hysteresis
Lithium batteries
Bateries d'ió liti
Histèresi
Àrees temàtiques de la UPC::Enginyeria electrònica
title_short Effects of cycling on lithium-ion battery hysteresis and overvoltage
title_full Effects of cycling on lithium-ion battery hysteresis and overvoltage
title_fullStr Effects of cycling on lithium-ion battery hysteresis and overvoltage
title_full_unstemmed Effects of cycling on lithium-ion battery hysteresis and overvoltage
title_sort Effects of cycling on lithium-ion battery hysteresis and overvoltage
dc.creator.none.fl_str_mv Ovejas Benedicto, Victòria Júlia|||0000-0002-7725-7299
Cuadras Tomàs, Àngel|||0000-0002-4540-6640
author Ovejas Benedicto, Victòria Júlia|||0000-0002-7725-7299
author_facet Ovejas Benedicto, Victòria Júlia|||0000-0002-7725-7299
Cuadras Tomàs, Àngel|||0000-0002-4540-6640
author_role author
author2 Cuadras Tomàs, Àngel|||0000-0002-4540-6640
author2_role author
dc.subject.none.fl_str_mv Overvoltage
Lithium ion batteries
Hysteresis
Hysteresis
Lithium batteries
Bateries d'ió liti
Histèresi
Àrees temàtiques de la UPC::Enginyeria electrònica
topic Overvoltage
Lithium ion batteries
Hysteresis
Hysteresis
Lithium batteries
Bateries d'ió liti
Histèresi
Àrees temàtiques de la UPC::Enginyeria electrònica
description Currently, lithium-ion batteries are widely used as energy storage systems for mobile applications. However, a better understanding of their nature is still required to improve battery management systems (BMS). Overvoltages and open-circuit voltage (OCV) hysteresis provide valuable information regarding battery performance, but estimations of these parameters are generally inaccurate, leading to errors in BMS. Studies on hysteresis are commonly avoided because the hysteresis depends on the state of charge and degradation level and requires time-consuming measurements. We have investigated hysteresis and overvoltages in Li(NiMnCo)O2/graphite and LiFePO4/graphite commercial cells. Here we report a direct relationship between an increase in OCV hysteresis and an increase in charge overvoltage when the cells are degraded by cycling. We fnd that the hysteresis is related to difusion and increases with the formation of pure phases, being primarily related to the graphite electrode. These fndings indicate that the graphite electrode is a determining factor for cell efciency.
publishDate 2019
dc.date.none.fl_str_mv 2019
2019-10-16
2020
2020-03-23
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/180886
https://dx.doi.org/10.1038/s41598-019-51474-5
url https://hdl.handle.net/2117/180886
https://dx.doi.org/10.1038/s41598-019-51474-5
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Nature
publisher.none.fl_str_mv Nature
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300724

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