Show simple item record

dc.contributor.authorWan, Qi
dc.contributor.authorLi, Ping
dc.contributor.authorShan, Jiawei
dc.contributor.authorZhai, Fuqiang
dc.contributor.authorLi, Ziliang
dc.contributor.authorQu, Xuanhui
dc.date.accessioned2015-04-27T11:55:52Z
dc.date.created2015-02-12
dc.date.issued2015-02-12
dc.identifier.citationWan, Q. [et al.]. Superior catalytic effect of nickel ferrite nanoparticles in improving hydrogen storage properties of MgH2. "The journal of physical chemistry. Part C, nanomaterials and interfaces", 12 Febrer 2015, vol. 119, núm. 6, p. 2925-2934.
dc.identifier.issn1932-7447
dc.identifier.urihttp://hdl.handle.net/2117/27594
dc.description.abstractThe catalysis of NiFe2O4 nanoparticles on the hydrogen storage performances of magnesium hydride synthesized by high-energy ball milling was studied for the first time. The H-2 storage performances and catalytic mechanism were studied by pressurecompositiontemperature (PCT), differential scanning calorimetry (DSC), X-ray diffraction (XRD), field emission scanning electron microscope (FESEM), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). The nonisothermal dehydrogenation results display that the initial dehydrogenation temperature of 7 mol % NiFe2O4-doped MgH2 is 191 degrees C, which is 250 degrees C lower than that of pristine MgH2. The desorption kinetics displays that the MgH2+7 mol % NiFe2O4 sample could desorb 3.79 wt % H-2 within 1 h at 300 degrees C under H-2 pressure of 0.1 MPa. The absorption kinetics displays that the MgH2+7 mol % NiFe2O4 sample could absorb 2.06 wt % H-2 within 3 h near room temperature under H-2 pressure of 4 MPa. The desorption activation energy of the MgH2+7 mol % NiFe2O4 sample is 59.6 kJ/mol, decreasing 195.3 kJ/mol as compared with pristine magnesium hydride. The reaction enthalpy and entropy of the MgH2+7 mol % NiFe2O4 sample during the dehydrogenation process are improved. The enhancement in the H-2 storage performances of MgH2 by adding NiFe2O4 nanoparticles is primarily ascribed to intermetallic Fe7Ni3 and (Fe,Ni) phases during the desorption procedure, which act as the real catalyzer in the 7 mol % NiFe2O4-doped sample.
dc.format.extent10 p.
dc.language.isoeng
dc.subjectÀrees temàtiques de la UPC::Enginyeria dels materials::Assaig de materials
dc.subject.lcshNanostructured materials
dc.subject.otherMAGNESIUM HYDRIDE
dc.subject.otherSORPTION KINETICS
dc.subject.otherDEHYDROGENATION PROPERTIES
dc.subject.otherNANOSTRUCTURED CERAMICS
dc.subject.otherMNFE2O4 NANOPARTICLES
dc.subject.otherDESORPTION PROPERTIES
dc.subject.otherTI
dc.subject.otherCOMPOSITE
dc.subject.otherALLOYS
dc.subject.otherNI
dc.titleSuperior catalytic effect of nickel ferrite nanoparticles in improving hydrogen storage properties of MgH2
dc.typeArticle
dc.subject.lemacMaterials nanoestructurats
dc.contributor.groupUniversitat Politècnica de Catalunya. GCM - Grup de Caracterització de Materials
dc.identifier.doi10.1021/jp508528k
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttp://pubs.acs.org/doi/abs/10.1021/jp508528k
dc.rights.accessRestricted access - publisher's policy
drac.iddocument15536669
dc.description.versionPostprint (published version)
dc.date.lift10000-01-01
upcommons.citation.authorWan, Q.; Li, P.; Shan, J.; Zhai, F.; Li, Z.; Qu, X.
upcommons.citation.publishedtrue
upcommons.citation.publicationNameThe journal of physical chemistry. Part C, nanomaterials and interfaces
upcommons.citation.volume119
upcommons.citation.number6
upcommons.citation.startingPage2925
upcommons.citation.endingPage2934


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record

All rights reserved. This work is protected by the corresponding intellectual and industrial property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public communication or transformation of this work are prohibited without permission of the copyright holder