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dc.contributor.authorWang, Lu
dc.contributor.authorWang, Zhaohui
dc.contributor.authorVullum, Per Erik
dc.contributor.authorSelbach, Sverre Magnus
dc.contributor.authorSvensson, Ann Mari
dc.contributor.authorVullum-Bruer, Fride
dc.date.accessioned2018-01-29T09:57:34Z
dc.date.available2018-01-29T09:57:34Z
dc.date.created2018-01-19T13:05:02Z
dc.date.issued2017
dc.identifier.issn1530-6984
dc.identifier.urihttp://hdl.handle.net/11250/2480194
dc.description.abstractConsidering the improved safety, reduced cost, and high volumetric energy density associated with Mg batteries, this technology has distinct advantages for large-scale energy storage compared to other existing battery technologies. However, the divalency of the Mg2+ cation cause sluggish magnesiation kinetics in crystalline host materials, resulting in poor performance with regards to capacity and cycling stability for intercalation based electrodes. Here, we present a Mg battery using Mn3O4 as the electrode material and Mg metal as the counter electrode in a Mg organohaloaluminate electrolyte. The reversible capacity when Mn3O4 was used as cathode reached ∼580 mAh g–1 at a current density of 15.4 mA g–1, whereas a reversible capacity of ∼1800 mAh g–1 was obtained in an anode configuration. The Mn3O4 in a cathode configuration shows excellent cycling stability with no loss of capacity after 500 cycles at a current density of 770 mA g–1. As an anode, Mn3O4 retained 86% of its initial capacity after 200 cycles. These exceptional charge storage properties and high cycling stability are attributed to highly reversible interfacial reactions involving the electrolyte solvents. Our conclusions are supported by density functional theory calculations in addition to quantitative kinetics analysis and scanning transmission electron microscopy combined with energy dispersive spectroscopy and electron energy loss spectroscopy.nb_NO
dc.language.isoengnb_NO
dc.publisherAmerican Chemical Societynb_NO
dc.titleSolvent-Controlled Charge Storage Mechanisms of Spinel Oxide Electrodes in Mg Organohaloaluminate Electrolytesnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionacceptedVersionnb_NO
dc.source.journalNano letters (Print)nb_NO
dc.identifier.doi10.1021/acs.nanolett.7b03978
dc.identifier.cristin1547447
dc.relation.projectNorges forskningsråd: 197405nb_NO
dc.description.localcode© American Chemical Society 2017. This is the authors accepted and refereed manuscript to the article. Locked until 19.12.2018 due to copyright restrictions.nb_NO
cristin.unitcode194,66,35,0
cristin.unitcode194,66,20,0
cristin.unitnameInstitutt for materialteknologi
cristin.unitnameInstitutt for fysikk
cristin.ispublishedtrue
cristin.fulltextpostprint
cristin.qualitycode2


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