Three Birds with One Stone : Multifunctional Separators Based on SnSe Nanosheets Enable High-Performance Li-, Na- and K-Sulfur Batteries
Li, Canhuang (Universitat de Barcelona. Departament de Química)
Yang, Dawei (Institut de Recerca en Energia de Catalunya)
Yu, Jing (Institut Català de Nanociència i Nanotecnologia)
Wang, Jian (Helmholtz Institute Ulm)
Zhang, Chaoqi (Fuzhou University)
Yang, Tianxiang (Luoyang Institute of Science and Technology)
Huang, Chen (Universitat de Barcelona. Departament de Química)
Nan, Bingfei (Institut de Recerca en Energia de Catalunya)
Li, Junshan (Chengdu University)
Arbiol i Cobos, Jordi (Institut Català de Nanociència i Nanotecnologia)
Zhou, Yingtang (Zhejiang Ocean University)
Zhang, Qiaobao (Xiamen University)
Cabot i Codina, Andreu (Institut de Recerca en Energia de Catalunya)

Date:	2024
Abstract:	Alkali metal-sulfur batteries (MSBs) are one of the most promising next-generation energy storage technologies due to their high energy density and potential for low cost. They are nonetheless constrained by the sluggish conversion of metal polysulfides (MPS) during the charge/discharge process. Herein, a multifunctional separator able to trap the MPS and catalyze their conversion in the three main MSB chemistries, Li-, Na-, and K-MSBs, is demonstrated. More in detail, SnSe nanosheets are introduced as additive into the cathode side of the glass microfiber (GF) separator of the MSB. Taking lithium-sulfur batteries (LSBs) as an example, it is demonstrated that the GF-SnSe separator (GF@SnSe) shows strong chemical affinity to lithium polysulfides (LiPS) and superior catalytic activity, inhibiting the transport of LiPSs to the anode and accelerating their conversion. Combining experimental and calculation results, the SnSe additive is shown to decrease the LiS decomposition energy barrier. Overall, GF@SnSe separators provide significantly improved LSB rate performance and cycling stability with a 0. 049% capacity decay per cycle. Besides, the GF@SnSe separator promotes the electrochemical performance of sodium-sulfur and potassium-sulfur batteries. Overall, this work presents a significant advancement in the development of multifunctional separators in LSBs as well as the emerging Na-S and K-S systems.
Grants:	Agencia Estatal de Investigación PID2022-136883OB-C22 Agencia Estatal de Investigación PCI2022-132985 Agencia Estatal de Investigación PID2020-116093RB-C43 Agencia Estatal de Investigación CEX2021-001214-S Agència de Gestió d'Ajuts Universitaris i de Recerca 2021/SGR-00457 Agència de Gestió d'Ajuts Universitaris i de Recerca 2021/SGR-01581
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Language:	Anglès
Document:	Article ; recerca ; Versió sotmesa a revisió
Published in:	Advanced Energy Materials, Vol. 14, Issue 29 (August 2024) , art. 2303551, ISSN 1614-6840

DOI: 10.1002/aenm.202303551

Preprint 27 p, 2.5 MB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Catalan Institute of Nanoscience and Nanotechnology (ICN2)
Articles > Research articles
Articles > Published articles