Blar i SINTEF Open på forfatter "Norby, Truls"

Viser treff 1-9 av 9

    • Double Perovskite Cobaltites Integrated in a Monolithic and Noble Metal-Free Photoelectrochemical Device for Efficient Water Splitting 

      Zhu, Junjie; Guđmundsdóttir, Jónína B.; Strandbakke, Ragnar; Both, Kevin G.; Aarholt, Thomas; Carvalho, Patricia A.; Sørby, Magnus H.; Jensen, Ingvild J.T.; Guzik, Matylda N.; Norby, Truls; Haug, Halvard; Chatzitakis, Athanasios (Peer reviewed; Journal article, 2021)
      Water photoelectrolysis has the potential to produce renewable hydrogen fuel, therefore addressing the intermittent nature of sunlight. Herein, a monolithic, photovoltaic (PV)-assisted water electrolysis device of minimal ...

    • Immobilization of FeFe-hydrogenase on black TiO2 nanotubes as biocathodes for the hydrogen evolution reaction 

      Liu, Xin; Risbakk, Sanne; Almeida Carvalho, Patricia; Yang, Mingyi; Backe, Paul Hoff; Bjørås, Magnar; Norby, Truls; Chatzitakis, Athanasios (Peer reviewed; Journal article, 2022)
      Hydrogenases are attractive biocatalysts for utilization in electrochemical devices as potential replacement for Pt in hydrogen evolving electrodes. In this work, we investigate the immobilization of ferredoxin tagged ...

    • In-situ electron loss spectroscopy reveals surface dehydrogenation of hydrated ceria nanoparticles at elevated temperatures 

      Thøgersen, Annett; Sun, Xinwei; Jensen, Ingvild Julie Thue; Prytz, Øystein; Norby, Truls (Peer reviewed; Journal article, 2022)
      Ceria (CeO2) exhibits high reversible oxygen storage capacity at intermediate temperatures (500–800 °C) related to an extraordinary and not fully understood reduction of its surfaces. We have investigated pristine and ...

    • Investigation of La1−xSrxCrO3−∂ (x ~ 0.1) as Membrane for Hydrogen Production 

      Larring, Yngve; Vigen, Camilla Kaori; Ahouanto, Florian; Fontaine, Marie-Laure; Peters, Thijs; Smith, Jens Bragdø; Norby, Truls; Bredesen, Rune (Peer reviewed; Journal article, 2012)
      Various inorganic membranes have demonstrated good capability to separate hydrogen from other gases at elevated temperatures. Hydrogen-permeable, dense, mixed proton-electron conducting ceramic oxides offer superior ...

    • Oxygen nonstoichiometry in (Ca2CoO3)0.62(CoO2): a combined experimental and computational study 

      Schrade, Matthias; Casolo, Simone; Graham, Paul J.; Ulrich, Clemens; Li, Sean; Løvvik, Ole Martin; Finstad, Terje; Norby, Truls (Peer reviewed; Journal article, 2014)
      The oxygen nonstoichiometry in the misfit calcium cobaltite (Ca2CoO3)0.62(CoO2) has been studied experimentally and by density functional theory (DFT) calculations. The standard oxidation enthalpy ΔH0Ox of oxygen deficient ...

    • Protons in Oxysulfates, and Sulfides: A First-Principles Study of La2O2S, La2O2SO4, SrZrS3, and BaZrS3 

      Polfus, Jonathan M.; Norby, Truls; Bredesen, Rune (Peer reviewed; Journal article, 2015)
      Sulfur-containing materials may be of importance in devices such as proton conducting fuel cells for energy conversion involving fossil or bioderived fuels. First-principles calculations were employed to elucidate the ...

    • Structural properties of mixed conductor Ba1−xGd1−yLax+yCo2O6−δ 

      Strandbakke, Ragnar; Wragg, David Stephen; Sørby, Magnus Helgerud; Guzik, Matylda; Gunnæs, Anette Eleonora; Szpunar, Iga; Wachowski, Sebastian Lech; Balaguer, Maria; Carvalho, Patricia A.; Mielewczyk-Gryń, Aleksandra; Serra, Jose; Norby, Truls (Peer reviewed; Journal article, 2022)
      Ba1−xGd1−yLax+yCo2O6−δ (BGLC) compositions with large compositional ranges of Ba, Gd, and La have been characterised with respect to phase compositions, structure, and thermal and chemical expansion. The results show a ...

    • Surface protonic conductivity in chemisorbed water in porous nanoscopic CeO2 

      Sun, Xinwei; Vøllestad, Einar; Rørvik, Per Martin; Prodinger, Sebastian; Kalantzopoulos, Giorgios N.; Chatzitakis, Athanasios; Norby, Truls (Peer reviewed; Journal article, 2023)
      CeO2 surfaces play decisive roles in heterogeneous catalysis of important processes. Here, we investigate adsorption and dissociation of water and migration of protons on internal surfaces of nanoscopic porous CeO2. Sorption ...

    • Thermo-fluid dynamics modelling of steam electrolysis in fully-assembled tubular high-temperature proton-conducting cells 

      Catalán-Martínez, D.; Navarrete, L.; Tarach, M.; Santos-Blasco, J.; Vøllestad, Einar; Norby, Truls; Budd, M.I.; Veenstra, P.; Serra, J.M. (Peer reviewed; Journal article, 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 ...