Browsing Kjemisk institutt by Author "Vøllestad, Einar"
Now showing items 1-11 of 11
-
Norby, Truls; Sun, Xinwei; Vøllestad, Einar (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)We provide herein a review and in-depth derivation and discussion of a surface brick layer model (SBLM) that scales the conductance of a surface layer – such as protonic conductance in adsorbed water – and the macroscopic ...
-
Hasle, Ida; Waldow, Stephan P.; Gries, Ute N.; De Souza, Roger A.; Vøllestad, Einar; Haugsrud, Reidar (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)B-site cation inter-diffusion in the ABO3 perovskite yttrium-substituted barium zirconate (BZY) was studied at temperatures from 1100 to 1460 °C under reducing and oxidising conditions. The experiments followed two different ...
-
Kraia, Tzouliana; Wachowski, Sebastian Lech; Vøllestad, Einar; Strandbakke, Ragnar; Konsolakis, M.; Norby, Truls Eivind; Marnellos, G.E. (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2017)The electrochemical performance of Co3O4/CeO2 mixed oxide materials as electrodes, when exposed to H2S/H2O atmospheres, was examined employing a proton conducting symmetrical cell, with BaZr0.7Ce0.2Y0.1O3 (BZCY72) as the ...
-
Vøllestad, Einar (Master thesis / Masteroppgave, 2010)
-
Husai, Yudai; Murakami, Kota; Kamite, Yukiko; Ma, Quanbao; Vøllestad, Einar; Manabe, Ryo; Matsuda, Takumi; Ogo, Shuhei; Norby, Truls Eivind; Sekine, Yasushi (Journal article / PublishedVersion; Peer reviewed, 2020)This is the first direct observation that surface proton hopping occurs on SrZrO3 perovskite even under a H2 (i.e. dry) atmosphere. Understanding proton conduction mechanisms on ceramic surfaces under a H2 atmosphere is ...
-
Xu, Kaiqi; Chatzitakis, Athanasios Eleftherios; Vøllestad, Einar; Ruan, Qiushi; Tang, Junwang; Norby, Truls Eivind (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)A solid-state photoelectrochemical (SSPEC) cell is an attractive approach for solar water splitting, especially when it comes to monolithic device design. In a SSPEC cell the electrodes distance is minimized, while the use ...
-
Stub, Sindre Østby; Vøllestad, Einar; Norby, Truls Eivind (Journal article / Tidsskriftartikkel / SubmittedVersion, 2017)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). ...
-
Vøllestad, Einar; Strandbakke, Ragnar; Tarach, Mateusz; Catalán-Martinez, David; Fontaine, Marie-Laure; Beeaff, Dustin; Clark, Daniel Ryan; Serra, José M.; Norby, Truls Eivind (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)Hydrogen production from water electrolysis is a key enabling energy storage technology for the large-scale deployment of intermittent renewable energy sources. Proton ceramic electrolysers (PCEs) can produce dry pressurized ...
-
Vøllestad, Einar (Doctoral thesis / Doktoravhandling, 2014)
-
Vøllestad, Einar; Schrade, Matthias; Segalini, Julie; Strandbakke, Ragnar; Norby, Truls Eivind (Journal article / Tidsskriftartikkel / SubmittedVersion, 2017)Rare earth double perovskites comprise a class of functional oxides with interesting physiochemical properties both for low- and high-temperature applications. However, little can be found relating electrical properties ...
-
Catalán-Martínez, D.; Navarrete, L.; Tarach, M.; Santos-Blasco, J.; Vøllestad, Einar; Norby, Truls; Budd, M.I.; Veenstra, P.; Serra, J.M. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)Electrolysis based on renewable energies offers a promising carbon-free solution for hydrogen generation and storage. The recent developments of proton ceramic electrolysis cells operating at intermediate temperatures bear ...