A High conductivity 1D π-d conjugated metal-organic framework with efficient polysulfide trapping-diffusion-catalysis in lithium-sulfur batteries
Yang, Dawei (Institut de Recerca en Energia de Catalunya)
Liang, Zhifu (Institut Català de Nanociència i Nanotecnologia)
Tang, PengYi (Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons (Jülich, Alemanya))
Zhang, Chaoqi (Universitat de Barcelona. Departament d'Enginyeria Electrònica i Biomèdica)
Tang, Mingxue (Center for High Pressure Science and Technology Advanced Research (Beijing))
Li, Qizhen (Southern University of Science and Technology. Department of Biomedical Engineering (Shenzhen))
Jacas Biendicho, Jordi (Institut de Recerca en Energia de Catalunya)
Li, Junshan (Chengdu University. Institute of Advanced Study)
Heggen, Marc (Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons (Jülich, Alemanya))
Dunin-Borkowski, Rafal E (Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons (Jülich, Alemanya))
Xu, Ming (Beijing University of Chemical Technology. State Key Laboratory of Chemical Resource Engineering)
Llorca, Jordi (Universitat Politècnica de Catalunya. Departament d'Enginyeria Química)
Arbiol i Cobos, Jordi (Institut Català de Nanociència i Nanotecnologia)
Morante, Joan Ramon (Institut de Recerca en Energia de Catalunya)
Chou, Shulei (Wenzhou University. Institute for Carbon Neutralization)
Cabot, Andreu (Institució Catalana de Recerca i Estudis Avançats)

Títol variant:	A High conductivity one-dimensional π-d conjugated metal-organic framework with efficient polysulfide trapping-diffusion-catalysis in lithium-sulfur batteries
Data:	2022
Resum:	The shuttling behavior and sluggish conversion kinetics of the intermediate lithium polysulfides (LiPS) represent the main obstructions to the practical application of lithium-sulfur batteries (LSBs). Herein, a 1D π-d conjugated metal-organic framework (MOF), Ni-MOF-1D, is presented as an efficient sulfur host to overcome these limitations. Experimental results and density functional theory calculations demonstrate that Ni-MOF-1D is characterized by a remarkable binding strength for trapping soluble LiPS species. Ni-MOF-1D also acts as an effective catalyst for S reduction during the discharge process and LiS oxidation during the charging process. In addition, the delocalization of electrons in the π-d system of Ni-MOF-1D provides a superior electrical conductivity to improve electron transfer. Thus, cathodes based on Ni-MOF-1D enable LSBs with excellent performance, for example, impressive cycling stability with over 82% capacity retention over 1000 cycles at 3 C, superior rate performance of 575 mAh g at 8 C, and a high areal capacity of 6. 63 mAh cm under raised sulfur loading of 6. 7 mg cm. The strategies and advantages here demonstrated can be extended to a broader range of π-d conjugated MOFs materials, which the authors believe have a high potential as sulfur hosts in LSBs.
Ajuts:	European Commission 823717 Ministerio de Economía y Competitividad PID2020-116093RB-C43 Ministerio de Economía y Competitividad ENE2016-77798-C4-3-R Ministerio de Economía y Competitividad SEV-2017-0706 Ministerio de Economía y Competitividad SEV-2013-0295-17-1 Ministerio de Ciencia e Innovación RTI2018-093996-B-C31 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-1246 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-327 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-128
Nota:	Títol alternatiu de la versió preprint
Nota:	Altres ajuts: IREC and ICN2 are both funded by the CERCA Programme/Generalitat de Catalunya. Part of the present work was performed in the framework of Universitat Autònoma de Barcelona Materials Science Ph.D. program
Drets:	Tots els drets reservats.
Llengua:	Anglès
Document:	Article ; recerca ; Versió sotmesa a revisió
Matèria:	Lithium polysulfide ; Lithium-sulfur batteries ; Metal organic frameworks ; π-d conjugation
Publicat a:	Advanced materials, Vol. 34, issue 10 (March 2022) , art. 2108835, ISSN 1521-4095

DOI: 10.1002/adma.202108835

Preprint 26 p, 1.7 MB

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