Design-Considerations regarding Silicon/Graphite and Tin/Graphite Composite Electrodes for Lithium-Ion Batteries

Abstract An analytical model is proposed to investigate properties of composite electrodes that utilize more than one active material. We demonstrate how the equations can be applied to aid in the design of electrodes by comparing silicon-graphite and tin-graphite composite negative electrodes as ex...

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Autores principales:	Manuel Otero, Christopher Heim, Ezequiel P. M. Leiva, Norbert Wagner, Andreas Friedrich
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Composite Electrode Volumetric Capacity Expansion Tolerance Volumetric Energy Density Initial Porosity Medicine R Science Q
Acceso en línea:	https://doaj.org/article/2b0de2a89f314026859b2fd57ca6a6fc
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spelling	oai:doaj.org-article:2b0de2a89f314026859b2fd57ca6a6fc2021-12-02T11:41:15ZDesign-Considerations regarding Silicon/Graphite and Tin/Graphite Composite Electrodes for Lithium-Ion Batteries10.1038/s41598-018-33405-y2045-2322https://doaj.org/article/2b0de2a89f314026859b2fd57ca6a6fc2018-10-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-33405-yhttps://doaj.org/toc/2045-2322Abstract An analytical model is proposed to investigate properties of composite electrodes that utilize more than one active material. We demonstrate how the equations can be applied to aid in the design of electrodes by comparing silicon-graphite and tin-graphite composite negative electrodes as examples with practical relevance. Based on simple assumptions, the results show how volume expansion tolerance and initial porosity are important factors for the achievable gravimetric and volumetric capacities as well as volumetric energy density. A Si-alloy/graphite composite electrode is used as an experimental system to corroborate the formulated analysis. Kinetic limitations are also addressed based on a novel heuristic approach.Manuel OteroChristopher HeimEzequiel P. M. LeivaNorbert WagnerAndreas FriedrichNature PortfolioarticleComposite ElectrodeVolumetric CapacityExpansion ToleranceVolumetric Energy DensityInitial PorosityMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-10 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Composite Electrode Volumetric Capacity Expansion Tolerance Volumetric Energy Density Initial Porosity Medicine R Science Q
spellingShingle	Composite Electrode Volumetric Capacity Expansion Tolerance Volumetric Energy Density Initial Porosity Medicine R Science Q Manuel Otero Christopher Heim Ezequiel P. M. Leiva Norbert Wagner Andreas Friedrich Design-Considerations regarding Silicon/Graphite and Tin/Graphite Composite Electrodes for Lithium-Ion Batteries
description	Abstract An analytical model is proposed to investigate properties of composite electrodes that utilize more than one active material. We demonstrate how the equations can be applied to aid in the design of electrodes by comparing silicon-graphite and tin-graphite composite negative electrodes as examples with practical relevance. Based on simple assumptions, the results show how volume expansion tolerance and initial porosity are important factors for the achievable gravimetric and volumetric capacities as well as volumetric energy density. A Si-alloy/graphite composite electrode is used as an experimental system to corroborate the formulated analysis. Kinetic limitations are also addressed based on a novel heuristic approach.
format	article
author	Manuel Otero Christopher Heim Ezequiel P. M. Leiva Norbert Wagner Andreas Friedrich
author_facet	Manuel Otero Christopher Heim Ezequiel P. M. Leiva Norbert Wagner Andreas Friedrich
author_sort	Manuel Otero
title	Design-Considerations regarding Silicon/Graphite and Tin/Graphite Composite Electrodes for Lithium-Ion Batteries
title_short	Design-Considerations regarding Silicon/Graphite and Tin/Graphite Composite Electrodes for Lithium-Ion Batteries
title_full	Design-Considerations regarding Silicon/Graphite and Tin/Graphite Composite Electrodes for Lithium-Ion Batteries
title_fullStr	Design-Considerations regarding Silicon/Graphite and Tin/Graphite Composite Electrodes for Lithium-Ion Batteries
title_full_unstemmed	Design-Considerations regarding Silicon/Graphite and Tin/Graphite Composite Electrodes for Lithium-Ion Batteries
title_sort	design-considerations regarding silicon/graphite and tin/graphite composite electrodes for lithium-ion batteries
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/2b0de2a89f314026859b2fd57ca6a6fc
work_keys_str_mv	AT manuelotero designconsiderationsregardingsilicongraphiteandtingraphitecompositeelectrodesforlithiumionbatteries AT christopherheim designconsiderationsregardingsilicongraphiteandtingraphitecompositeelectrodesforlithiumionbatteries AT ezequielpmleiva designconsiderationsregardingsilicongraphiteandtingraphitecompositeelectrodesforlithiumionbatteries AT norbertwagner designconsiderationsregardingsilicongraphiteandtingraphitecompositeelectrodesforlithiumionbatteries AT andreasfriedrich designconsiderationsregardingsilicongraphiteandtingraphitecompositeelectrodesforlithiumionbatteries
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Design-Considerations regarding Silicon/Graphite and Tin/Graphite Composite Electrodes for Lithium-Ion Batteries

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