The effect of expanded natural graphite added at different ratios of metal hydride on hydrogen storage amount and reaction kinetics

Basit Öğe Kaydı
dc.authoridDEMIRALP, MEHMET/0000-0002-7444-5630
dc.authoridAtalmis, Gamze/0000-0002-2392-7672
dc.contributor.authorAtalmis, Gamze
dc.contributor.authorSattarkhanov, Kurshod
dc.contributor.authorDemiralp, Mehmet
dc.contributor.authorKaplan, Yuksel
dc.date.accessioned2024-11-07T13:24:54Z
dc.date.available2024-11-07T13:24:54Z
dc.date.issued2024
dc.departmentNiğde Ömer Halisdemir Üniversitesi
dc.description.abstractIn this study, metal hydride pellets were formed to accelerate the hydrogen charge/ discharge processes. The heat transfer in hydrogen storage material was improved by employing Expanded natural graphite (ENG). The ideal grinding time for LaNi5 material was determined to be 5 h. In the study, LaNi5 alloy was mixed with ENG in 1%, 5%, 10%, and 20% proportions by weight. The amount of hydrogen stored in the reactor by each mixture at 10 bar pressure was measured depending on time. Within the scope of experimental studies, the thermal conductivity coefficient of LaNi5 materials containing 20% ENG by weight was increased by 1380%. Thus, hydrogen charge/discharge processes were accelerated. Storage materials were characterized by XRD and SEM. The thermal conductivity coefficients were measured with the Hot Disk Thermal Constants Analyzer device, and the densities were measured with the Helium Pycnometer device. LaNi5 was chosen as the storage material in the study. It was found that 1-5 wt% ENG addition increased the reaction kinetics without significantly reducing the hydrogen storage capacity in storage alloys. However, in alloys with higher ENG concentrations, the hydrogen storage capacity decreased. The reaction kinetics were increased in the range of 135-260%. (c) 2023 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
dc.description.sponsorshipScientific and Technical Research Council of Turkey (TUBITAK) [121M529]; Council of Higher Education (YOK) [100/2000]
dc.description.sponsorshipThe authors would like to thank the Scientific and Technical Research Council of Turkey (TUBITAK) for the financial support under contract number 121M529. The first author, Gamze ATALMIS,, would like to thank the Council of Higher Education (YOK) for the 100/2000 Ph.D. Scholarship Program.
dc.identifier.doi10.1016/j.ijhydene.2023.04.124
dc.identifier.endpage265
dc.identifier.issn0360-3199
dc.identifier.issn1879-3487
dc.identifier.scopus2-s2.0-85154040795
dc.identifier.scopusqualityQ1
dc.identifier.startpage256
dc.identifier.urihttps://doi.org/10.1016/j.ijhydene.2023.04.124
dc.identifier.urihttps://hdl.handle.net/11480/14361
dc.identifier.volume51
dc.identifier.wosWOS:001139908700001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherPergamon-Elsevier Science Ltd
dc.relation.ispartofInternational Journal of Hydrogen Energy
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241106
dc.subjectHydrogen storage
dc.subjectMetal hydride
dc.subjectThermal conductivity
dc.subjectExpanded natural graphite (ENG)
dc.titleThe effect of expanded natural graphite added at different ratios of metal hydride on hydrogen storage amount and reaction kinetics
dc.typeArticle

Dosyalar

Koleksiyon

WoS İndeksli Yayınlar Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu