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Intercalation-type catalyst for non-aqueous room temperature sodium-sulfur batteries

Ambient-temperature sodium-sulfur (Na-S) batteries are potential attractive alternatives to lithium-ion batteries owing to their high theoretical specific energy of 1,274 Wh kg(−1) based on the mass of Na(2)S and abundant sulfur resources. However, their practical viability is impeded by sodium poly...

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Autores principales: He, Jiarui, Bhargav, Amruth, Su, Laisuo, Charalambous, Harry, Manthiram, Arumugam
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10582099/
https://www.ncbi.nlm.nih.gov/pubmed/37848498
http://dx.doi.org/10.1038/s41467-023-42383-3
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author He, Jiarui
Bhargav, Amruth
Su, Laisuo
Charalambous, Harry
Manthiram, Arumugam
author_facet He, Jiarui
Bhargav, Amruth
Su, Laisuo
Charalambous, Harry
Manthiram, Arumugam
author_sort He, Jiarui
collection PubMed
description Ambient-temperature sodium-sulfur (Na-S) batteries are potential attractive alternatives to lithium-ion batteries owing to their high theoretical specific energy of 1,274 Wh kg(−1) based on the mass of Na(2)S and abundant sulfur resources. However, their practical viability is impeded by sodium polysulfide shuttling. Here, we report an intercalation-conversion hybrid positive electrode material by coupling the intercalation-type catalyst, MoTe(2), with the conversion-type active material, sulfur. In addition, MoTe(2) nanosheets vertically grown on graphene flakes offer abundant active catalytic sites, further boosting the catalytic activity for sulfur redox. When used as a composite positive electrode and assembled in a coin cell with excess Na, a discharge capacity of 1,081 mA h g(s)(−1) based on the mass of S with a capacity fade rate of 0.05% per cycle over 350 cycles at 0.1 C rate in a voltage range of 0.8 to 2.8 V is realized under a high sulfur loading of 3.5 mg cm(−2) and a lean electrolyte condition with an electrolyte-to-sulfur ratio of 7 μL mg(−1). A fundamental understanding of the electrocatalysis of MoTe(2) is further revealed by in-situ synchrotron-based operando X-ray diffraction and ex-situ time-of-flight secondary ion mass spectrometry.
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spelling pubmed-105820992023-10-19 Intercalation-type catalyst for non-aqueous room temperature sodium-sulfur batteries He, Jiarui Bhargav, Amruth Su, Laisuo Charalambous, Harry Manthiram, Arumugam Nat Commun Article Ambient-temperature sodium-sulfur (Na-S) batteries are potential attractive alternatives to lithium-ion batteries owing to their high theoretical specific energy of 1,274 Wh kg(−1) based on the mass of Na(2)S and abundant sulfur resources. However, their practical viability is impeded by sodium polysulfide shuttling. Here, we report an intercalation-conversion hybrid positive electrode material by coupling the intercalation-type catalyst, MoTe(2), with the conversion-type active material, sulfur. In addition, MoTe(2) nanosheets vertically grown on graphene flakes offer abundant active catalytic sites, further boosting the catalytic activity for sulfur redox. When used as a composite positive electrode and assembled in a coin cell with excess Na, a discharge capacity of 1,081 mA h g(s)(−1) based on the mass of S with a capacity fade rate of 0.05% per cycle over 350 cycles at 0.1 C rate in a voltage range of 0.8 to 2.8 V is realized under a high sulfur loading of 3.5 mg cm(−2) and a lean electrolyte condition with an electrolyte-to-sulfur ratio of 7 μL mg(−1). A fundamental understanding of the electrocatalysis of MoTe(2) is further revealed by in-situ synchrotron-based operando X-ray diffraction and ex-situ time-of-flight secondary ion mass spectrometry. Nature Publishing Group UK 2023-10-17 /pmc/articles/PMC10582099/ /pubmed/37848498 http://dx.doi.org/10.1038/s41467-023-42383-3 Text en © This is a U.S. Government work and not under copyright protection in the US; foreign copyright protection may apply 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
He, Jiarui
Bhargav, Amruth
Su, Laisuo
Charalambous, Harry
Manthiram, Arumugam
Intercalation-type catalyst for non-aqueous room temperature sodium-sulfur batteries
title Intercalation-type catalyst for non-aqueous room temperature sodium-sulfur batteries
title_full Intercalation-type catalyst for non-aqueous room temperature sodium-sulfur batteries
title_fullStr Intercalation-type catalyst for non-aqueous room temperature sodium-sulfur batteries
title_full_unstemmed Intercalation-type catalyst for non-aqueous room temperature sodium-sulfur batteries
title_short Intercalation-type catalyst for non-aqueous room temperature sodium-sulfur batteries
title_sort intercalation-type catalyst for non-aqueous room temperature sodium-sulfur batteries
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10582099/
https://www.ncbi.nlm.nih.gov/pubmed/37848498
http://dx.doi.org/10.1038/s41467-023-42383-3
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