dc.date.accessioned | 2018-05-25T12:03:09Z | |
dc.date.available | 2018-05-25T12:03:09Z | |
dc.date.created | 2018-01-03T09:21:35Z | |
dc.date.issued | 2017 | |
dc.identifier.citation | Stub, Sindre Østby Vøllestad, Einar Norby, Truls Eivind . Mechanisms of Protonic Surface Transport in Porous Oxides: Example of YSZ. Journal of Physical Chemistry C. 2017, 121(23), 12817-12825 | |
dc.identifier.uri | http://hdl.handle.net/10852/61734 | |
dc.description.abstract | The electrical properties and the charge carrier mechanism of porous 8 mol% yttria-stabilized zirconia (8YSZ) ceramic samples have been investigated over wide ranges of relative humidity (RH) and temperature (25-400 ºC). The presence of humidity introduces protonic surface conduction, and porous YSZ shows pure protonic conduction below ~150 ºC. H/D isotope effect studies combined with transport number measurements reveal a change in transport mechanism from structural diffusion (Grotthuss type) to vehicular transport when the relative humidity exceeds ~60% RH, coinciding with a change in the adsorbed water layer from an “ice-like” to a “water-like” structure. Similarly, the activation energy for proton transport decreases from 0.43 eV to 0.28 eV when the relative humidity increases from 20% RH to 84% RH, reflecting changes in the enthalpies of formation and migration of charged species with increasing water layer thickness. | en_US |
dc.language | EN | |
dc.language.iso | en | en_US |
dc.publisher | American Chemical Society (ACS) | |
dc.relation.ispartof | Stub, Sindre Østby (2017) Protonic Conduction in Porous Oxides. Doctoral thesis http://hdl.handle.net/10852/61735 | |
dc.relation.uri | http://hdl.handle.net/10852/61735 | |
dc.title | Mechanisms of Protonic Surface Transport in Porous Oxides: Example of YSZ | en_US |
dc.type | Journal article | en_US |
dc.creator.author | Stub, Sindre Østby | |
dc.creator.author | Vøllestad, Einar | |
dc.creator.author | Norby, Truls Eivind | |
cristin.unitcode | 185,15,17,10 | |
cristin.unitname | Senter for Materialvitenskap og Nanoteknologi kjemi | |
cristin.ispublished | true | |
cristin.fulltext | preprint | |
cristin.qualitycode | 1 | |
dc.identifier.cristin | 1534325 | |
dc.identifier.bibliographiccitation | info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal of Physical Chemistry C&rft.volume=121&rft.spage=12817&rft.date=2017 | |
dc.identifier.jtitle | Journal of Physical Chemistry C | |
dc.identifier.volume | 121 | |
dc.identifier.issue | 23 | |
dc.identifier.startpage | 12817 | |
dc.identifier.endpage | 12825 | |
dc.identifier.doi | http://dx.doi.org/10.1021/acs.jpcc.7b03005 | |
dc.identifier.urn | URN:NBN:no-64342 | |
dc.type.document | Tidsskriftartikkel | en_US |
dc.source.issn | 1932-7447 | |
dc.identifier.fulltext | Fulltext https://www.duo.uio.no/bitstream/handle/10852/61734/1/Mechanisms%2Bof%2Bprotonic%2Bsurface%2Btransport%2Bin%2Bporous%2Boxides_revised.pdf | |
dc.type.version | SubmittedVersion | |