Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/35549
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dc.contributor.authorULU, Fulya-
dc.contributor.authorMYLAVARAPU, Satish Kumar-
dc.contributor.authorSAFARI, Momo-
dc.contributor.authorDE SLOOVERE, Dries-
dc.contributor.authorD'HAEN, Jan-
dc.contributor.authorJOOS, Bjorn-
dc.contributor.authorKALIYAPPAN, Periyasamy-
dc.contributor.authorKELCHTERMANS, An-Sofie-
dc.contributor.authorSAMYN, Pieter-
dc.contributor.authorVAN BAEL, Marlies-
dc.contributor.authorHARDY, An-
dc.date.accessioned2021-10-21T10:02:33Z-
dc.date.available2021-10-21T10:02:33Z-
dc.date.issued2022-
dc.date.submitted2021-10-12T14:39:05Z-
dc.identifier.citationJournal of Alloys and Compounds, 892 (Art N° 162175)-
dc.identifier.issn0925-8388-
dc.identifier.urihttp://hdl.handle.net/1942/35549-
dc.description.abstractLiNi 0.5 Mn 1.5 O 4-δ (LNMO) is a potential candidate for high voltage Co-free cathodes in lithium-ion batteries. In this study, pre-calcination temperature, time, and oven type are showcased as important parameters influencing the particle size and morphology of the LNMO powder synthesized from the aqueous citric acid-acetates-NH 3 based method. These parameters determine the amount of organic residues in the precursor powder. A superior initial discharge capacity and capacity retention are obtained by an optimum combination of the particle size and morphology for the Li|LNMO coin cells. Pre-calcination in a forced convection oven at 200 °C for 40 h results in a voluminous and foam-like LNMO precursor powder morphology with the lowest amount of organic residue, leading to a ~ 1-4 µm powder with well-defined facets. Applying 24 h pre-calcination at 170 °C in a natural convection oven results in large LNMO aggregates of ~ 70 µm. Ball-milling of the crystalline LNMO powder is effective to reduce the agglomeration and particle size but deteriorates the electrochemical performance. An initial discharge capacity of 121 mA h g-1 at 0.2 C and a capacity retention of 90% after 400 cycles at 2 C are obtained from the samples prepared by 40 h pre-calcination at 200 °C in a forced-convection oven.-
dc.description.sponsorshipThis work was supported by the Research Foundation Flanders (FWO Vlaanderen, grant number G053519N), the European Regional Development Fund ERDF, Flanders Innovation & Entrepreneurship and the Province of Limburg (project 936). The authors also thank Elsy Thijssen, Greet Cuyvers and Wouter Marchal for the ICP-AES measurements, Bart Ruttens for the XRD measurements, Hilde Pellaers for the SEM sample preparation, Saeed Yari for the powder pycnometer measurements and Ulrique Vounckx for the TEM measurements.-
dc.language.isoen-
dc.publisherELSEVIER SCIENCE SA-
dc.rights2021 Elsevier B.V. All rights reserved.-
dc.subject.otherEnergy storage materials-
dc.subject.otherOxide materials-
dc.subject.otherChemical synthesis-
dc.subject.otherSol-gel processes-
dc.subject.otherCrystal structure-
dc.subject.otherCrystal growth-
dc.titleLiNi0.5Mn1.5O4-δ (LNMO) as Co-free cathode for lithium ion batteries via solution-gel synthesis: Particle size and morphology investigation-
dc.typeJournal Contribution-
dc.identifier.volume892-
local.format.pages12-
local.bibliographicCitation.jcatA1-
local.publisher.placePO BOX 564, 1001 LAUSANNE, SWITZERLAND-
local.type.refereedRefereed-
local.type.specifiedArticle-
local.bibliographicCitation.artnr162175-
dc.identifier.doi10.1016/j.jallcom.2021.162175-
dc.identifier.isi000711344300001-
dc.identifier.eissn1873-4669-
local.provider.typePdf-
local.uhasselt.uhpubno-
local.uhasselt.internationalno-
item.fulltextWith Fulltext-
item.accessRightsRestricted Access-
item.contributorULU, Fulya-
item.contributorMYLAVARAPU, Satish Kumar-
item.contributorSAFARI, Momo-
item.contributorDE SLOOVERE, Dries-
item.contributorD'HAEN, Jan-
item.contributorJOOS, Bjorn-
item.contributorKALIYAPPAN, Periyasamy-
item.contributorKELCHTERMANS, An-Sofie-
item.contributorSAMYN, Pieter-
item.contributorVAN BAEL, Marlies-
item.contributorHARDY, An-
item.validationecoom 2023-
item.fullcitationULU, Fulya; MYLAVARAPU, Satish Kumar; SAFARI, Momo; DE SLOOVERE, Dries; D'HAEN, Jan; JOOS, Bjorn; KALIYAPPAN, Periyasamy; KELCHTERMANS, An-Sofie; SAMYN, Pieter; VAN BAEL, Marlies & HARDY, An (2022) LiNi0.5Mn1.5O4-δ (LNMO) as Co-free cathode for lithium ion batteries via solution-gel synthesis: Particle size and morphology investigation. In: Journal of Alloys and Compounds, 892 (Art N° 162175).-
crisitem.journal.issn0925-8388-
crisitem.journal.eissn1873-4669-
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