Sodium-Selenium Batteries with Outstanding Rate Capability by Introducing Cubic Mn2O3 Electrocatalyst

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dc.authoridDemir-Cakan, Rezan/0000-0002-8667-6567
dc.contributor.authorErdol, Zeynep
dc.contributor.authorAta, Ali
dc.contributor.authorDemir-Cakan, Rezan
dc.date.accessioned2025-02-20T08:42:25Z
dc.date.available2025-02-20T08:42:25Z
dc.date.issued2024
dc.departmentTürk-Alman Üniversitesien_US
dc.description.abstractWith their high volumetric capacity and electronic conductivity, sodium-selenium (Na-Se) batteries have attracted attention for advanced battery systems. However, the irreversible deposition of sodium selenide (Na2Se) results in rapid capacity degradation and poor Coulombic efficiency. To address these issues, cubic alpha-Mn2O3 is introduced herein as an electrocatalyst to effectively catalyze Na2Se conversion and improve the utilization of active materials. The results show that the addition of 10 wt% Mn2O3 in the selenium/Ketjen black (Se/KB) composite enhances the conversion from Na2Se to Se by lowering activation energy barrier and leads to fast sodium-ion kinetics and low internal resistance. Consequently, the Mn2O3-based composite delivers a high specific capacity of 635 mAh & sdot; g(-1) at 675 mA & sdot; g(-1) after 250 cycles as well as excellent cycling stability for 800 cycles with a high specific capacity of 317 mAh & sdot; g(-1) even at the high current density of 3375 mA & sdot; g(-1). Due to the cubic Mn2O3 electrocatalyst, the performance of the composites is superior to existing state-of-the-art Na-Se batteries reported in the literature.
dc.identifier.doi10.1002/cssc.202300998
dc.identifier.issn1864-5631
dc.identifier.issn1864-564X
dc.identifier.issue2en_US
dc.identifier.pmid37721954
dc.identifier.scopus2-s2.0-85175611120
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1002/cssc.202300998
dc.identifier.urihttps://hdl.handle.net/20.500.12846/1672
dc.identifier.volume17en_US
dc.identifier.wosWOS:001099876800001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherWiley-V C H Verlag Gmbh
dc.relation.ispartofChemsuschem
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WOS_20250220
dc.subjectsodium-selenium batteriesen_US
dc.subjectmetal oxideen_US
dc.subjectcubic-Mn2O3en_US
dc.subjectelectrocatalysten_US
dc.subjectNa2Se depositionen_US
dc.titleSodium-Selenium Batteries with Outstanding Rate Capability by Introducing Cubic Mn2O3 Electrocatalyst
dc.typeArticle

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