Vis enkel innførsel

dc.contributor.authorThorne, Rebecca Jayne
dc.contributor.authorSommerseth, Camilla
dc.contributor.authorRatvik, Arne Petter
dc.contributor.authorRørvik, Stein
dc.contributor.authorSandnes, Espen
dc.contributor.authorLossius, Lorentz Petter
dc.contributor.authorLinga, Hogne
dc.contributor.authorSvensson, Ann Mari
dc.date.accessioned2017-11-02T12:06:59Z
dc.date.available2017-11-02T12:06:59Z
dc.date.created2015-11-19T09:03:24Z
dc.date.issued2015
dc.identifier.citationJournal of the Electrochemical Society. 2015, 162 (12), E296-E307.nb_NO
dc.identifier.issn0013-4651
dc.identifier.urihttp://hdl.handle.net/11250/2463706
dc.description.abstractAlthough the anode process during aluminum electrolysis has a substantial overpotential that increases the energy demand and production cost of aluminum, properties of the coke that can influence the electrochemical reactivity in the industrial anode itself have not been well documented. In this work the electrochemical performance of anodes fabricated from single source (anisotropic and isotropic) cokes, including an ultrapure graphite as reference material, was determined, and compared to the material properties of the cokes and baked anodes. Anodes were characterized for air and CO2 reactivity and optical texture, and cokes and anodes characterized for presence of oxygen surface groups and microstructure (fractions of basal, edge and defect sites on the surface and pore volume below 16 nm). Results show that anodes made from more isotropic cokes (increasing optical texture fineness) had a slight improvement in electrochemical performance compared to those made from more anisotropic cokes. For all anodes, electrochemical reactivity correlated with the electrochemically-wetted surface area, as determined by the double layer capacitance. This appears to be related to microstructure and possibly also to differences in surface chemistry, rather than differences in surface roughness and porosity as determined by optical techniques (i.e. on a μm-scale).nb_NO
dc.language.isoengnb_NO
dc.publisherElectrochemical Societynb_NO
dc.titleCorrelation between coke type, microstructure and anodic reaction overpotential in aluminium electrolysisnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionsubmittedVersionnb_NO
dc.source.pagenumberE296-E307nb_NO
dc.source.volume162nb_NO
dc.source.journalJournal of the Electrochemical Societynb_NO
dc.source.issue12nb_NO
dc.identifier.doi10.1149/2.0461512jes
dc.identifier.cristin1290672
dc.description.localcodeThis is the authors' manuscript to the article (preprint).nb_NO
cristin.unitcode194,66,35,0
cristin.unitnameInstitutt for materialteknologi
cristin.ispublishedtrue
cristin.fulltextpreprint
cristin.qualitycode2


Tilhørende fil(er)

Thumbnail

Denne innførselen finnes i følgende samling(er)

Vis enkel innførsel