dc.contributor.author | Wagner, Nils Peter | |
dc.contributor.author | Svensson, Ann Mari | |
dc.contributor.author | Vullum-Bruer, Fride | |
dc.date.accessioned | 2017-10-30T14:25:45Z | |
dc.date.available | 2017-10-30T14:25:45Z | |
dc.date.created | 2015-06-15T12:56:04Z | |
dc.date.issued | 2015 | |
dc.identifier.citation | Solid State Ionics. 2015, 276 26-32. | nb_NO |
dc.identifier.issn | 0167-2738 | |
dc.identifier.uri | http://hdl.handle.net/11250/2462940 | |
dc.description.abstract | Lithium transition metal orthosilicates of the general formula Li2MSiO4 have gained great interest as potential positive electrode material for Li-ion batteries. This study reports the dependence of phase purity and morphology on heat treatment atmosphere and the amount of corn-starch as carbonization agent during a PVA assisted sol–gel synthesis of nano-sized porous Li2MnSiO4/C composites. All samples were indexed to the orthorhombic Pmn21 polymorph, but samples with carbon contents less than 6% showed traces of the second orthorhombic polymorph Pmnb. Highest phase purities and a desired porous nano-sized morphology were obtained when heat treatments were carried out in 5% H2 and corn-starch amounts were ≥ 25 wt.%. Powders with varying carbon amounts were produced and the electrochemical performance was determined by galvanostatic cycling at different current densities. Samples with a corn-starch amount of 25 wt.% offered the highest initial discharge capacity of 155 mAh g−1 at a current density of 3 mA g−1. | nb_NO |
dc.language.iso | eng | nb_NO |
dc.publisher | Elsevier | nb_NO |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no | * |
dc.title | Effect of carbon content and annealing atmosphere on phase purity and morphology of Li2MnSiO4 synthesized by a PVA assisted sol–gel method | nb_NO |
dc.type | Journal article | nb_NO |
dc.type | Peer reviewed | nb_NO |
dc.description.version | acceptedVersion | nb_NO |
dc.source.pagenumber | 26-32 | nb_NO |
dc.source.volume | 276 | nb_NO |
dc.source.journal | Solid State Ionics | nb_NO |
dc.identifier.doi | 10.1016/j.ssi.2015.03.029 | |
dc.identifier.cristin | 1248229 | |
dc.relation.project | Norges forskningsråd: 216469 | nb_NO |
dc.description.localcode | © 2015. This is the authors’ accepted and refereed manuscript to the article. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ | nb_NO |
cristin.unitcode | 194,66,35,0 | |
cristin.unitname | Institutt for materialteknologi | |
cristin.ispublished | true | |
cristin.fulltext | postprint | |
cristin.qualitycode | 1 | |