NbSe2 meets C2N: a 2D-2D heterostructure catalysts as multifunctional polysulfide mediator in ultra-long-life lithium–sulfur batteries

The shuttle effect and sluggish conversion kinetics of lithium polysulfides (LiPS) hamper the practical application of lithium–sulfur batteries (LSBs). Toward overcoming these limitations, herein an in situ grown C2N@NbSe2 heterostructure is presented with remarkable specific surface area, as a Li–S...

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Autores: Yang, Dawei, Liang, Zhifu, Zhang, Chaoqi, Jacas Biendicho, Jordi|||0000-0001-5981-6168, Spadaro, Maria Chiara, Li, Mengyao, Moghaddam, Ahmad Ostovari, Llorca Piqué, Jordi|||0000-0002-7447-9582, Morante Lleonart, Joan Ramon|||0000-0002-4981-4633, Arbiol, Jordi, Cabot, Andreu
Tipo de recurso: artículo
Fecha de publicación:2021
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:2117/359124
Acceso en línea:https://hdl.handle.net/2117/359124
https://dx.doi.org/10.1002/aenm.202101250
Access Level:acceso abierto
Palabra clave:Catalysis
Lithium-sulfur batteries
Catàlisi
Àrees temàtiques de la UPC::Enginyeria química
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spelling NbSe2 meets C2N: a 2D-2D heterostructure catalysts as multifunctional polysulfide mediator in ultra-long-life lithium–sulfur batteriesYang, DaweiLiang, ZhifuZhang, ChaoqiJacas Biendicho, Jordi|||0000-0001-5981-6168Spadaro, Maria ChiaraLi, MengyaoMoghaddam, Ahmad OstovariLlorca Piqué, Jordi|||0000-0002-7447-9582Morante Lleonart, Joan Ramon|||0000-0002-4981-4633Arbiol, JordiCabot, AndreuCatalysisLithium-sulfur batteriesCatàlisiÀrees temàtiques de la UPC::Enginyeria químicaThe shuttle effect and sluggish conversion kinetics of lithium polysulfides (LiPS) hamper the practical application of lithium–sulfur batteries (LSBs). Toward overcoming these limitations, herein an in situ grown C2N@NbSe2 heterostructure is presented with remarkable specific surface area, as a Li–S catalyst and LiPS absorber. Density functional theory (DFT) calculations and experimental results comprehensively demonstrate that C2N@NbSe2 is characterized by a suitable electronic structure and charge rearrangement that strongly accelerates the LiPS electrocatalytic conversion. In addition, heterostructured C2N@NbSe2 strongly interacts with LiPS species, confining them at the cathode. As a result, LSBs cathodes based on C2N@NbSe2/S exhibit a high initial capacity of 1545 mAh g-1 at 0.1 C. Even more excitingly, C2N@NbSe2/S cathodes are characterized by impressive cycling stability with only 0.012% capacity decay per cycle after 2000 cycles at 3 C. Even at a sulfur loading of 5.6 mg cm-2, a high areal capacity of 5.65 mAh cm-2 is delivered. These results demonstrate that C2N@NbSe2 heterostructures can act as multifunctional polysulfide mediators to chemically adsorb LiPS, accelerate Li-ion diffusion, chemically catalyze LiPS conversion, and lower the energy barrier for Li2S precipitation/decomposition, realizing the “adsorption-diffusion-conversion” of polysulfides.Award-winning20212021-09-2320212021-12-23journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/359124https://dx.doi.org/10.1002/aenm.202101250reponame: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:2117/3591242026-05-27T15:37:01Z
dc.title.none.fl_str_mv NbSe2 meets C2N: a 2D-2D heterostructure catalysts as multifunctional polysulfide mediator in ultra-long-life lithium–sulfur batteries
title NbSe2 meets C2N: a 2D-2D heterostructure catalysts as multifunctional polysulfide mediator in ultra-long-life lithium–sulfur batteries
spellingShingle NbSe2 meets C2N: a 2D-2D heterostructure catalysts as multifunctional polysulfide mediator in ultra-long-life lithium–sulfur batteries
Yang, Dawei
Catalysis
Lithium-sulfur batteries
Catàlisi
Àrees temàtiques de la UPC::Enginyeria química
title_short NbSe2 meets C2N: a 2D-2D heterostructure catalysts as multifunctional polysulfide mediator in ultra-long-life lithium–sulfur batteries
title_full NbSe2 meets C2N: a 2D-2D heterostructure catalysts as multifunctional polysulfide mediator in ultra-long-life lithium–sulfur batteries
title_fullStr NbSe2 meets C2N: a 2D-2D heterostructure catalysts as multifunctional polysulfide mediator in ultra-long-life lithium–sulfur batteries
title_full_unstemmed NbSe2 meets C2N: a 2D-2D heterostructure catalysts as multifunctional polysulfide mediator in ultra-long-life lithium–sulfur batteries
title_sort NbSe2 meets C2N: a 2D-2D heterostructure catalysts as multifunctional polysulfide mediator in ultra-long-life lithium–sulfur batteries
dc.creator.none.fl_str_mv Yang, Dawei
Liang, Zhifu
Zhang, Chaoqi
Jacas Biendicho, Jordi|||0000-0001-5981-6168
Spadaro, Maria Chiara
Li, Mengyao
Moghaddam, Ahmad Ostovari
Llorca Piqué, Jordi|||0000-0002-7447-9582
Morante Lleonart, Joan Ramon|||0000-0002-4981-4633
Arbiol, Jordi
Cabot, Andreu
author Yang, Dawei
author_facet Yang, Dawei
Liang, Zhifu
Zhang, Chaoqi
Jacas Biendicho, Jordi|||0000-0001-5981-6168
Spadaro, Maria Chiara
Li, Mengyao
Moghaddam, Ahmad Ostovari
Llorca Piqué, Jordi|||0000-0002-7447-9582
Morante Lleonart, Joan Ramon|||0000-0002-4981-4633
Arbiol, Jordi
Cabot, Andreu
author_role author
author2 Liang, Zhifu
Zhang, Chaoqi
Jacas Biendicho, Jordi|||0000-0001-5981-6168
Spadaro, Maria Chiara
Li, Mengyao
Moghaddam, Ahmad Ostovari
Llorca Piqué, Jordi|||0000-0002-7447-9582
Morante Lleonart, Joan Ramon|||0000-0002-4981-4633
Arbiol, Jordi
Cabot, Andreu
author2_role author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Catalysis
Lithium-sulfur batteries
Catàlisi
Àrees temàtiques de la UPC::Enginyeria química
topic Catalysis
Lithium-sulfur batteries
Catàlisi
Àrees temàtiques de la UPC::Enginyeria química
description The shuttle effect and sluggish conversion kinetics of lithium polysulfides (LiPS) hamper the practical application of lithium–sulfur batteries (LSBs). Toward overcoming these limitations, herein an in situ grown C2N@NbSe2 heterostructure is presented with remarkable specific surface area, as a Li–S catalyst and LiPS absorber. Density functional theory (DFT) calculations and experimental results comprehensively demonstrate that C2N@NbSe2 is characterized by a suitable electronic structure and charge rearrangement that strongly accelerates the LiPS electrocatalytic conversion. In addition, heterostructured C2N@NbSe2 strongly interacts with LiPS species, confining them at the cathode. As a result, LSBs cathodes based on C2N@NbSe2/S exhibit a high initial capacity of 1545 mAh g-1 at 0.1 C. Even more excitingly, C2N@NbSe2/S cathodes are characterized by impressive cycling stability with only 0.012% capacity decay per cycle after 2000 cycles at 3 C. Even at a sulfur loading of 5.6 mg cm-2, a high areal capacity of 5.65 mAh cm-2 is delivered. These results demonstrate that C2N@NbSe2 heterostructures can act as multifunctional polysulfide mediators to chemically adsorb LiPS, accelerate Li-ion diffusion, chemically catalyze LiPS conversion, and lower the energy barrier for Li2S precipitation/decomposition, realizing the “adsorption-diffusion-conversion” of polysulfides.
publishDate 2021
dc.date.none.fl_str_mv 2021
2021-09-23
2021
2021-12-23
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
AM
http://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/359124
https://dx.doi.org/10.1002/aenm.202101250
url https://hdl.handle.net/2117/359124
https://dx.doi.org/10.1002/aenm.202101250
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.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 15,301603

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