Plasma-treated Bombyx mori cocoon separators for high-performance and sustainable lithium-ion batteries
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | https://hdl.handle.net/1822/69505 |
Resumo: | The success of lithium ion batteries (LIBs) and their unique advantages for electrochemical energy storage have speed up research in this field. A critical component of LIBs is the separator. Here, Bombyx mori silk cocoon separators have been treated with oxygen (O2) and nitrogen (N2) plasmas at different exposure times. The goal was to improve the electrochemical characteristics of these natural separators without jeopardizing the major attributes of silk fibers. Major physical and chemical modifications have been identified at the submicrometer scale upon the application of the plasmas: (1) Etching of the silk nanofibrils and concomitant increase of roughness (more effective with O2 plasma), corresponding to the destruction of the 5 th structural hierarchy level of the silk fibers. (2) Creation of oxygen-containing functional groups carrying negatives charges at the surface, causing a superhydrophic-to-superhydrophilic transition, and favoring Li+ transport. The optimized cocoon separator exposed to O2 plasma for 30 s exhibited high electrolyte uptake (289%), high ionic conductivity (2.33 mS cm−1 at 25 ºC) and low overall resistance. A cathodic half-cell of carbon-coated lithium iron phosphate incorporating this separator sample soaked in the ethylene carbonate/dimethyl carbonate/lithium hexafluorophosphate electrolyte demonstrated a performance boost with respect to the battery including a raw cocoon separator: an outstanding increase (ca. 270%) of the discharge capacity (from 26.1 to 96.7 mAh g−1 at 5C-rate) and an impressive increase (291%) of the capacity retention (from 22.3 to 87.2%, from C/5 to 5C). This work proves that the O2 plasma exposure is a valid, simple, fast, clean and safe top-down methodology to improve the properties of Bombyx mori cocoon separators. The features of these plasma-treated separators, which surpass those of commercial separators, help upgrading the performance of LIBs. This plasma-enhanced natural biomaterial separator technological platform pushes LIBs to the next performance-level, while guaranteeing the eco-friendly, sustainability and safety labels. |
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Plasma-treated Bombyx mori cocoon separators for high-performance and sustainable lithium-ion batteriesBombyx mori cocoon separatorsPlasma treatmentLithium-ion batteriesPerformanceSafetySustainabilityBiomimeticNatural materialsSilkScience & TechnologyThe success of lithium ion batteries (LIBs) and their unique advantages for electrochemical energy storage have speed up research in this field. A critical component of LIBs is the separator. Here, Bombyx mori silk cocoon separators have been treated with oxygen (O2) and nitrogen (N2) plasmas at different exposure times. The goal was to improve the electrochemical characteristics of these natural separators without jeopardizing the major attributes of silk fibers. Major physical and chemical modifications have been identified at the submicrometer scale upon the application of the plasmas: (1) Etching of the silk nanofibrils and concomitant increase of roughness (more effective with O2 plasma), corresponding to the destruction of the 5 th structural hierarchy level of the silk fibers. (2) Creation of oxygen-containing functional groups carrying negatives charges at the surface, causing a superhydrophic-to-superhydrophilic transition, and favoring Li+ transport. The optimized cocoon separator exposed to O2 plasma for 30 s exhibited high electrolyte uptake (289%), high ionic conductivity (2.33 mS cm−1 at 25 ºC) and low overall resistance. A cathodic half-cell of carbon-coated lithium iron phosphate incorporating this separator sample soaked in the ethylene carbonate/dimethyl carbonate/lithium hexafluorophosphate electrolyte demonstrated a performance boost with respect to the battery including a raw cocoon separator: an outstanding increase (ca. 270%) of the discharge capacity (from 26.1 to 96.7 mAh g−1 at 5C-rate) and an impressive increase (291%) of the capacity retention (from 22.3 to 87.2%, from C/5 to 5C). This work proves that the O2 plasma exposure is a valid, simple, fast, clean and safe top-down methodology to improve the properties of Bombyx mori cocoon separators. The features of these plasma-treated separators, which surpass those of commercial separators, help upgrading the performance of LIBs. This plasma-enhanced natural biomaterial separator technological platform pushes LIBs to the next performance-level, while guaranteeing the eco-friendly, sustainability and safety labels.This work was supported by National funds by Foundation for Science and Technology (FCT) in the framework of the Strategic Funding UID/FIS/04650/2019, UID/QUI/00686/2016, UID/QUI/00686/2018 and UID/QUI/00686/2019. The authors thank FEDER funds through the COMPETE 2020 Program and National Funds through FCT under the projects PTDC/FIS-MAC/28157/2017, PEst-OE/QUI/UI0616/2014, LUMECD (POCI-01-0145-FEDER-016884 and PTDC/CTM-NAN/0956/2014), UniRCell (SAICTPAC/0032/2015 and POCI-01-0145- FEDER-016422), Investigator FCT Contract CEECIND/00833/2017 (R.G.) and grants SFRH/BPD/87759/2012 (R.F.P.P), SFRH/BPD/121526/2016 (D.M.C) and SFRH/BPD/112547/2015 (C.M.C). R.F.P.P. also thanks FCT-UM for the researcher contract in the scope of Decreto-Lei 57/2016 and 57/2017. H.M.R. acknowledges financial support from PTDC/BTM-MAT/30858/2017. Funding by Basque Government Industry and Education Department under the ELKARTEK, HAZITEK and PIBA programs is acknowledged.ElsevierUniversidade do MinhoPereira, Rui Francisco Gonçalves Pinto FernandesGonçalves, RenatoRodrigues, HelenaCorreia, Daniela M.Costa, Carlos Miguel SilvaSilva, Maria M.Lanceros-Méndez, S.Zea Bermudez, V20202020-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/1822/69505eng2589-234710.1016/j.mtsust.2020.100041https://www.sciencedirect.com/science/article/pii/S2589234720300105#!info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-10-07T01:22:08Zoai:repositorium.sdum.uminho.pt:1822/69505Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:40:52.401691Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Plasma-treated Bombyx mori cocoon separators for high-performance and sustainable lithium-ion batteries |
title |
Plasma-treated Bombyx mori cocoon separators for high-performance and sustainable lithium-ion batteries |
spellingShingle |
Plasma-treated Bombyx mori cocoon separators for high-performance and sustainable lithium-ion batteries Pereira, Rui Francisco Gonçalves Pinto Fernandes Bombyx mori cocoon separators Plasma treatment Lithium-ion batteries Performance Safety Sustainability Biomimetic Natural materials Silk Science & Technology |
title_short |
Plasma-treated Bombyx mori cocoon separators for high-performance and sustainable lithium-ion batteries |
title_full |
Plasma-treated Bombyx mori cocoon separators for high-performance and sustainable lithium-ion batteries |
title_fullStr |
Plasma-treated Bombyx mori cocoon separators for high-performance and sustainable lithium-ion batteries |
title_full_unstemmed |
Plasma-treated Bombyx mori cocoon separators for high-performance and sustainable lithium-ion batteries |
title_sort |
Plasma-treated Bombyx mori cocoon separators for high-performance and sustainable lithium-ion batteries |
author |
Pereira, Rui Francisco Gonçalves Pinto Fernandes |
author_facet |
Pereira, Rui Francisco Gonçalves Pinto Fernandes Gonçalves, Renato Rodrigues, Helena Correia, Daniela M. Costa, Carlos Miguel Silva Silva, Maria M. Lanceros-Méndez, S. Zea Bermudez, V |
author_role |
author |
author2 |
Gonçalves, Renato Rodrigues, Helena Correia, Daniela M. Costa, Carlos Miguel Silva Silva, Maria M. Lanceros-Méndez, S. Zea Bermudez, V |
author2_role |
author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Pereira, Rui Francisco Gonçalves Pinto Fernandes Gonçalves, Renato Rodrigues, Helena Correia, Daniela M. Costa, Carlos Miguel Silva Silva, Maria M. Lanceros-Méndez, S. Zea Bermudez, V |
dc.subject.por.fl_str_mv |
Bombyx mori cocoon separators Plasma treatment Lithium-ion batteries Performance Safety Sustainability Biomimetic Natural materials Silk Science & Technology |
topic |
Bombyx mori cocoon separators Plasma treatment Lithium-ion batteries Performance Safety Sustainability Biomimetic Natural materials Silk Science & Technology |
description |
The success of lithium ion batteries (LIBs) and their unique advantages for electrochemical energy storage have speed up research in this field. A critical component of LIBs is the separator. Here, Bombyx mori silk cocoon separators have been treated with oxygen (O2) and nitrogen (N2) plasmas at different exposure times. The goal was to improve the electrochemical characteristics of these natural separators without jeopardizing the major attributes of silk fibers. Major physical and chemical modifications have been identified at the submicrometer scale upon the application of the plasmas: (1) Etching of the silk nanofibrils and concomitant increase of roughness (more effective with O2 plasma), corresponding to the destruction of the 5 th structural hierarchy level of the silk fibers. (2) Creation of oxygen-containing functional groups carrying negatives charges at the surface, causing a superhydrophic-to-superhydrophilic transition, and favoring Li+ transport. The optimized cocoon separator exposed to O2 plasma for 30 s exhibited high electrolyte uptake (289%), high ionic conductivity (2.33 mS cm−1 at 25 ºC) and low overall resistance. A cathodic half-cell of carbon-coated lithium iron phosphate incorporating this separator sample soaked in the ethylene carbonate/dimethyl carbonate/lithium hexafluorophosphate electrolyte demonstrated a performance boost with respect to the battery including a raw cocoon separator: an outstanding increase (ca. 270%) of the discharge capacity (from 26.1 to 96.7 mAh g−1 at 5C-rate) and an impressive increase (291%) of the capacity retention (from 22.3 to 87.2%, from C/5 to 5C). This work proves that the O2 plasma exposure is a valid, simple, fast, clean and safe top-down methodology to improve the properties of Bombyx mori cocoon separators. The features of these plasma-treated separators, which surpass those of commercial separators, help upgrading the performance of LIBs. This plasma-enhanced natural biomaterial separator technological platform pushes LIBs to the next performance-level, while guaranteeing the eco-friendly, sustainability and safety labels. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020 2020-01-01T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://hdl.handle.net/1822/69505 |
url |
https://hdl.handle.net/1822/69505 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
2589-2347 10.1016/j.mtsust.2020.100041 https://www.sciencedirect.com/science/article/pii/S2589234720300105#! |
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info:eu-repo/semantics/openAccess |
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openAccess |
dc.format.none.fl_str_mv |
application/pdf |
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Elsevier |
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Elsevier |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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