Nanohybridization of POM/CNT anode materials for enhanced cycle stability and superior discharge capacity in sodium-ion batteries

Basit Öğe Kaydı
dc.contributor.authorChilufya, Langson
dc.contributor.authorBugday, Nesrin
dc.contributor.authorYasar, Sedat
dc.contributor.authorEmirdag-Eanes, Mehtap
dc.date.accessioned2026-04-04T13:35:01Z
dc.date.available2026-04-04T13:35:01Z
dc.date.issued2025
dc.departmentİnönü Üniversitesi
dc.description.abstractPolyoxometalates (POMs) have emerged as high-energy-density electrodes acting as 'electron/ion sponges' for pseudocapacitive energy storage, attributed to their swift and reversible multi-redox reactions. In sodium-ion batteries (SIBs), POM-based electrodes have given excellent energy density. However, the negligible conductivity of pristine POMs and high electrolyte dissolution can lead to subpar electrochemical performance in poor capacity retention, and rate capability. To address these challenges, we employed a facile ultrasonication strategy to prepare polyoxometalate/carbon-nanotube (POM/CNT) nanohybrids. CNTs were modified with the tetrabutylammonium polyoxotungstate, TBA3[PW12O40].nH2O (TBA-PW12), yielding TBA-POM/CNT nanohybrids. These were synthesized using four CNT sources: single-walled (SW), multi-walled (MW), and their hydroxyl-functionalized analogues (SWOH and MWOH). The nanohybrids were characterized using FT-IR, Raman spectroscopy, powder XRD, TGA, SEM/EDX, STEM, XPS, and BET analysis. Electrochemical evaluation of TBA-PW12/SW and TBA-PW12/MW nanohybrids as an anode for SIB showed superior Na-ion storage, delivering reversible capacities of 69.4 mAh g-1 and 27.5 mAh g-1, respectively, at a current density of 2 A g-1 after 1000 cycles. Under the same conditions, the nanohybrids from functionalized SWOH and MWOH also showed enhanced performance, achieving discharge capacities of 66.2 mAh g-1 and 57.3 mAh g-1, respectively. This impressive electrochemical performance was ascribed to the multiple active sites of TBA-PW12 combined with conductive pathways and surface functionalities of CNTs, which enable rapid electron transfer, high Na-ion conductivity, and efficient ion diffusion. Overall, POM/CNT nanohybridization presents a promising strategy to overcome the intrinsic limitations of pristine POMs, thereby advancing the design of high-performance anodes for SIBs and sustainable energy applications.
dc.description.sponsorshipIZTECH Scientific Research Project Coordinator [2022-IYTE-3-0013]
dc.description.sponsorshipThis research was supported by the IZTECH Scientific Research Project Coordinator (2022-IYTE-3-0013) .
dc.identifier.doi10.1016/j.jallcom.2025.185332
dc.identifier.issn0925-8388
dc.identifier.issn1873-4669
dc.identifier.orcid0000-0002-3503-7474
dc.identifier.scopus2-s2.0-105023448768
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.jallcom.2025.185332
dc.identifier.urihttps://hdl.handle.net/11616/109558
dc.identifier.volume1048
dc.identifier.wosWOS:001633158400001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier Science Sa
dc.relation.ispartofJournal of Alloys and Compounds
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20250329
dc.subjectPOMs
dc.subjectCNTs
dc.subjectAnodes
dc.subjectSodium-ion Batteries
dc.subjectSustainable energy
dc.titleNanohybridization of POM/CNT anode materials for enhanced cycle stability and superior discharge capacity in sodium-ion batteries
dc.typeArticle

Dosyalar

Koleksiyon

WoS İndeksli Yayınlar Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu