Fine-tuning intrinsic and doped hydrogenated amorphous silicon thin-film anodes deposited by PECVD to enhance capacity and stability in lithium-ion batteries

Silicon is a promising alternative to graphite as an anode material in lithium-ion batteries, thanks to its high theoretical lithium storage capacity. Despite these high expectations, silicon anodes still face significant challenges, such as premature battery failure caused by huge volume changes du...

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Detalles Bibliográficos
Autores: González, Nieves, García, Tomás, Morant Zacarés, Carmen, Barrio, Rocío
Tipo de recurso: artículo
Fecha de publicación:2024
País:España
Institución:Universidad Autónoma de Madrid
Repositorio:Biblos-e Archivo. Repositorio Institucional de la UAM
Idioma:inglés
OAI Identifier:oai:repositorio.uam.es:10486/716603
Acceso en línea:http://hdl.handle.net/10486/716603
https://dx.doi.org/10.3390/nano14020204
Access Level:acceso abierto
Palabra clave:Amorphous silicon
anodes
energy storage
lithium-ion battery
Energías Renovables / Energías Alternativas
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spelling Fine-tuning intrinsic and doped hydrogenated amorphous silicon thin-film anodes deposited by PECVD to enhance capacity and stability in lithium-ion batteriesGonzález, NievesGarcía, TomásMorant Zacarés, CarmenBarrio, RocíoAmorphous siliconanodesenergy storagelithium-ion batteryEnergías Renovables / Energías AlternativasSilicon is a promising alternative to graphite as an anode material in lithium-ion batteries, thanks to its high theoretical lithium storage capacity. Despite these high expectations, silicon anodes still face significant challenges, such as premature battery failure caused by huge volume changes during charge–discharge processes. To solve this drawback, using amorphous silicon as a thin film offers several advantages: its amorphous nature allows for better stress mitigation and it can be directly grown on current collectors for material savings and improved Li-ion diffusion. Furthermore, its conductivity is easily increased through doping during its growth. In this work, we focused on a comprehensive study of the influence of both electrical and structural properties of intrinsic and doped hydrogenated amorphous silicon (aSi:H) thin-film anodes on the specific capacity and stability of lithium-ion batteries. This study allows us to establish that hydrogen distribution in the aSi:H material plays a pivotal role in enhancing battery capacity and longevity, possibly masking the significance of the conductivity in the case of doped electrodes. Our findings show that we were able to achieve high initial specific capacities (3070 mAhg-1 at the 10th cycle), which can be retained at values higher than those of graphite for a significant number of cycles (>120 cycles), depending on the structural properties of the aSi:H films. To our knowledge, this is the first comprehensive study of the influence of these properties of thin films with different doping levels and hydrogen distributions on their optimization and use as anodes in lithium-ion batteriesThis work was supported by the Spanish of Ministry of Science and Innovation under projects SCALED (PID2019-109215RB-C42); NanoCat-Com (PID2021-124667OB-I00, accessed on 1 September 2022) and the European Project STORIES (LC-GD-9-1-2020-European Research Infrastructures capacities and services to address European Green Deal challenges)MDPIDepartamento de Física AplicadaFacultad de Ciencias20242024-01-17research articlehttp://purl.org/coar/resource_type/c_2df8fbb1VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10486/716603https://dx.doi.org/10.3390/nano14020204reponame:Biblos-e Archivo. Repositorio Institucional de la UAMinstname:Universidad Autónoma de MadridInglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:repositorio.uam.es:10486/7166032026-06-23T12:46:27Z
dc.title.none.fl_str_mv Fine-tuning intrinsic and doped hydrogenated amorphous silicon thin-film anodes deposited by PECVD to enhance capacity and stability in lithium-ion batteries
title Fine-tuning intrinsic and doped hydrogenated amorphous silicon thin-film anodes deposited by PECVD to enhance capacity and stability in lithium-ion batteries
spellingShingle Fine-tuning intrinsic and doped hydrogenated amorphous silicon thin-film anodes deposited by PECVD to enhance capacity and stability in lithium-ion batteries
González, Nieves
Amorphous silicon
anodes
energy storage
lithium-ion battery
Energías Renovables / Energías Alternativas
title_short Fine-tuning intrinsic and doped hydrogenated amorphous silicon thin-film anodes deposited by PECVD to enhance capacity and stability in lithium-ion batteries
title_full Fine-tuning intrinsic and doped hydrogenated amorphous silicon thin-film anodes deposited by PECVD to enhance capacity and stability in lithium-ion batteries
title_fullStr Fine-tuning intrinsic and doped hydrogenated amorphous silicon thin-film anodes deposited by PECVD to enhance capacity and stability in lithium-ion batteries
title_full_unstemmed Fine-tuning intrinsic and doped hydrogenated amorphous silicon thin-film anodes deposited by PECVD to enhance capacity and stability in lithium-ion batteries
title_sort Fine-tuning intrinsic and doped hydrogenated amorphous silicon thin-film anodes deposited by PECVD to enhance capacity and stability in lithium-ion batteries
dc.creator.none.fl_str_mv González, Nieves
García, Tomás
Morant Zacarés, Carmen
Barrio, Rocío
author González, Nieves
author_facet González, Nieves
García, Tomás
Morant Zacarés, Carmen
Barrio, Rocío
author_role author
author2 García, Tomás
Morant Zacarés, Carmen
Barrio, Rocío
author2_role author
author
author
dc.contributor.none.fl_str_mv Departamento de Física Aplicada
Facultad de Ciencias
dc.subject.none.fl_str_mv Amorphous silicon
anodes
energy storage
lithium-ion battery
Energías Renovables / Energías Alternativas
topic Amorphous silicon
anodes
energy storage
lithium-ion battery
Energías Renovables / Energías Alternativas
description Silicon is a promising alternative to graphite as an anode material in lithium-ion batteries, thanks to its high theoretical lithium storage capacity. Despite these high expectations, silicon anodes still face significant challenges, such as premature battery failure caused by huge volume changes during charge–discharge processes. To solve this drawback, using amorphous silicon as a thin film offers several advantages: its amorphous nature allows for better stress mitigation and it can be directly grown on current collectors for material savings and improved Li-ion diffusion. Furthermore, its conductivity is easily increased through doping during its growth. In this work, we focused on a comprehensive study of the influence of both electrical and structural properties of intrinsic and doped hydrogenated amorphous silicon (aSi:H) thin-film anodes on the specific capacity and stability of lithium-ion batteries. This study allows us to establish that hydrogen distribution in the aSi:H material plays a pivotal role in enhancing battery capacity and longevity, possibly masking the significance of the conductivity in the case of doped electrodes. Our findings show that we were able to achieve high initial specific capacities (3070 mAhg-1 at the 10th cycle), which can be retained at values higher than those of graphite for a significant number of cycles (>120 cycles), depending on the structural properties of the aSi:H films. To our knowledge, this is the first comprehensive study of the influence of these properties of thin films with different doping levels and hydrogen distributions on their optimization and use as anodes in lithium-ion batteries
publishDate 2024
dc.date.none.fl_str_mv 2024
2024-01-17
dc.type.none.fl_str_mv research article
http://purl.org/coar/resource_type/c_2df8fbb1
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 http://hdl.handle.net/10486/716603
https://dx.doi.org/10.3390/nano14020204
url http://hdl.handle.net/10486/716603
https://dx.doi.org/10.3390/nano14020204
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 4.0 International
http://creativecommons.org/licenses/by/4.0/
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
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv reponame:Biblos-e Archivo. Repositorio Institucional de la UAM
instname:Universidad Autónoma de Madrid
instname_str Universidad Autónoma de Madrid
reponame_str Biblos-e Archivo. Repositorio Institucional de la UAM
collection Biblos-e Archivo. Repositorio Institucional de la UAM
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,81155

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