Is Soft Carbon a More Suitable Match for SiOx in Li-Ion Battery Anodes?

Silicon oxide (SiOx), inheriting the high-capacity characteristic of silicon-based materials but possessing superior cycling stability, is a promising anode material for next-generation Li-ion batteries. SiOx is typically applied in combination with graphite (Gr), but the limited cycling durability...

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Autores: Sun, Qing|||0000-0002-9145-7772, Zeng, Guifang|||0000-0002-5927-4730, Li, Jing|||0000-0002-9283-3821, Wang, Shang, Botifoll, Marc|||0000-0002-4876-6393, Wang, Hao, Li, Deping, Ji, Fengjun, Cheng, Jun, Shao, Huaiyu, Tian, Yanhong, Arbiol i Cobos, Jordi|||0000-0002-0695-1726, Cabot i Codina, Andreu|||0000-0002-7533-3251, Ci, Lijie|||0000-0002-1759-105X
Tipo de recurso: artículo
Fecha de publicación:2023
País:España
Institución:Universitat Autònoma de Barcelona
Repositorio:Dipòsit Digital de Documents de la UAB
Idioma:inglés
OAI Identifier:oai:ddd.uab.cat:302222
Acceso en línea:https://ddd.uab.cat/record/302222
https://dx.doi.org/urn:doi:10.1002/smll.202302644
Access Level:acceso abierto
Palabra clave:Lithium-ion batteries
SiOx/C anode
Working potential match
Operando X-ray diffraction
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spelling Is Soft Carbon a More Suitable Match for SiOx in Li-Ion Battery Anodes?Sun, Qing|||0000-0002-9145-7772Zeng, Guifang|||0000-0002-5927-4730Li, Jing|||0000-0002-9283-3821Wang, ShangBotifoll, Marc|||0000-0002-4876-6393Wang, HaoLi, DepingJi, FengjunCheng, JunShao, HuaiyuTian, YanhongArbiol i Cobos, Jordi|||0000-0002-0695-1726Cabot i Codina, Andreu|||0000-0002-7533-3251Ci, Lijie|||0000-0002-1759-105XLithium-ion batteriesSiOx/C anodeWorking potential matchOperando X-ray diffractionSilicon oxide (SiOx), inheriting the high-capacity characteristic of silicon-based materials but possessing superior cycling stability, is a promising anode material for next-generation Li-ion batteries. SiOx is typically applied in combination with graphite (Gr), but the limited cycling durability of the SiOx/Gr composites curtails large-scale applications. In this work, this limited durability is demonstrated in part related to the presence of a bidirectional diffusion at the SiOx/Gr interface, which is driven by their intrinsic working potential differences and the concentration gradients. When Li on the Li-rich surface of SiOx is captured by Gr, the SiOx surface shrinks, hindering further lithiation. The use of soft carbon (SC) instead of Gr can prevent such instability is further demonstrated. The higher working potential of SC avoids bidirectional diffusion and surface compression thus allowing further lithiation. In this scenario, the evolution of the Li concentration gradient in SiOx conforms to its spontaneous lithiation process, benefiting the electrochemical performance. These results highlight the focus on the working potential of carbon as a strategy for rational optimization of SiOx/C composites toward improved battery performance. 22023-01-0120232023-01-01Articlehttp://purl.org/coar/resource_type/c_6501SMURhttp://purl.org/coar/version/c_71e4c1898caa6e32info:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/302222https://dx.doi.org/urn:doi:10.1002/smll.202302644reponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengAgencia Estatal de Investigación https://doi.org/10.13039/501100011033 PID2020-116093RB-C43Agència de Gestió d'Ajuts Universitaris i de Recerca https://doi.org/10.13039/501100003030 2017/SGR-327Ministerio de Ciencia e Innovación https://doi.org/10.13039/501100004837 CEX2021-001214-Sopen accesshttp://purl.org/coar/access_right/c_abf2Aquest material està protegit per drets d'autor i/o drets afins. Podeu utilitzar aquest material en funció del que permet la legislació de drets d'autor i drets afins d'aplicació al vostre cas. Per a d'altres usos heu d'obtenir permís del(s) titular(s) de drets.https://rightsstatements.org/vocab/InC/1.0/info:eu-repo/semantics/openAccessoai:ddd.uab.cat:3022222026-06-06T12:50:31Z
dc.title.none.fl_str_mv Is Soft Carbon a More Suitable Match for SiOx in Li-Ion Battery Anodes?
title Is Soft Carbon a More Suitable Match for SiOx in Li-Ion Battery Anodes?
spellingShingle Is Soft Carbon a More Suitable Match for SiOx in Li-Ion Battery Anodes?
Sun, Qing|||0000-0002-9145-7772
Lithium-ion batteries
SiOx/C anode
Working potential match
Operando X-ray diffraction
title_short Is Soft Carbon a More Suitable Match for SiOx in Li-Ion Battery Anodes?
title_full Is Soft Carbon a More Suitable Match for SiOx in Li-Ion Battery Anodes?
title_fullStr Is Soft Carbon a More Suitable Match for SiOx in Li-Ion Battery Anodes?
title_full_unstemmed Is Soft Carbon a More Suitable Match for SiOx in Li-Ion Battery Anodes?
title_sort Is Soft Carbon a More Suitable Match for SiOx in Li-Ion Battery Anodes?
dc.creator.none.fl_str_mv Sun, Qing|||0000-0002-9145-7772
Zeng, Guifang|||0000-0002-5927-4730
Li, Jing|||0000-0002-9283-3821
Wang, Shang
Botifoll, Marc|||0000-0002-4876-6393
Wang, Hao
Li, Deping
Ji, Fengjun
Cheng, Jun
Shao, Huaiyu
Tian, Yanhong
Arbiol i Cobos, Jordi|||0000-0002-0695-1726
Cabot i Codina, Andreu|||0000-0002-7533-3251
Ci, Lijie|||0000-0002-1759-105X
author Sun, Qing|||0000-0002-9145-7772
author_facet Sun, Qing|||0000-0002-9145-7772
Zeng, Guifang|||0000-0002-5927-4730
Li, Jing|||0000-0002-9283-3821
Wang, Shang
Botifoll, Marc|||0000-0002-4876-6393
Wang, Hao
Li, Deping
Ji, Fengjun
Cheng, Jun
Shao, Huaiyu
Tian, Yanhong
Arbiol i Cobos, Jordi|||0000-0002-0695-1726
Cabot i Codina, Andreu|||0000-0002-7533-3251
Ci, Lijie|||0000-0002-1759-105X
author_role author
author2 Zeng, Guifang|||0000-0002-5927-4730
Li, Jing|||0000-0002-9283-3821
Wang, Shang
Botifoll, Marc|||0000-0002-4876-6393
Wang, Hao
Li, Deping
Ji, Fengjun
Cheng, Jun
Shao, Huaiyu
Tian, Yanhong
Arbiol i Cobos, Jordi|||0000-0002-0695-1726
Cabot i Codina, Andreu|||0000-0002-7533-3251
Ci, Lijie|||0000-0002-1759-105X
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Lithium-ion batteries
SiOx/C anode
Working potential match
Operando X-ray diffraction
topic Lithium-ion batteries
SiOx/C anode
Working potential match
Operando X-ray diffraction
description Silicon oxide (SiOx), inheriting the high-capacity characteristic of silicon-based materials but possessing superior cycling stability, is a promising anode material for next-generation Li-ion batteries. SiOx is typically applied in combination with graphite (Gr), but the limited cycling durability of the SiOx/Gr composites curtails large-scale applications. In this work, this limited durability is demonstrated in part related to the presence of a bidirectional diffusion at the SiOx/Gr interface, which is driven by their intrinsic working potential differences and the concentration gradients. When Li on the Li-rich surface of SiOx is captured by Gr, the SiOx surface shrinks, hindering further lithiation. The use of soft carbon (SC) instead of Gr can prevent such instability is further demonstrated. The higher working potential of SC avoids bidirectional diffusion and surface compression thus allowing further lithiation. In this scenario, the evolution of the Li concentration gradient in SiOx conforms to its spontaneous lithiation process, benefiting the electrochemical performance. These results highlight the focus on the working potential of carbon as a strategy for rational optimization of SiOx/C composites toward improved battery performance.
publishDate 2023
dc.date.none.fl_str_mv 2
2023-01-01
2023
2023-01-01
dc.type.none.fl_str_mv Article
http://purl.org/coar/resource_type/c_6501
SMUR
http://purl.org/coar/version/c_71e4c1898caa6e32
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://ddd.uab.cat/record/302222
https://dx.doi.org/urn:doi:10.1002/smll.202302644
url https://ddd.uab.cat/record/302222
https://dx.doi.org/urn:doi:10.1002/smll.202302644
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Agencia Estatal de Investigación https://doi.org/10.13039/501100011033 PID2020-116093RB-C43
Agència de Gestió d'Ajuts Universitaris i de Recerca https://doi.org/10.13039/501100003030 2017/SGR-327
Ministerio de Ciencia e Innovación https://doi.org/10.13039/501100004837 CEX2021-001214-S
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://rightsstatements.org/vocab/InC/1.0/
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
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eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Dipòsit Digital de Documents de la UAB
instname:Universitat Autònoma de Barcelona
instname_str Universitat Autònoma de Barcelona
reponame_str Dipòsit Digital de Documents de la UAB
collection Dipòsit Digital de Documents de la UAB
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