Recent Submissions

  • Structural Characterization of Natural Quartz by Scanning TEM 

    Busam, Jochen; Wenner, Sigurd; Muggerud, Astrid Marie; Van Helvoort, Antonius (Peer reviewed; Journal article, 2018)
    For quartz, despite its industrial importance and an extensive amount of research done on it, there are still open fundamental questions, e.g. regarding crystal defects, phase changes or damage mechanisms under ionizing ...
  • Hydrogen quality sampling at the hydrogen refuelling station - lessons learnt on sampling at the production and at the nozzle 

    Bacquart, Thomas; Moore, Niamh; Hart, Nick; Morris, Abigail; Aarhaug, Thor Anders; Kjos, Ole Sigmund; Aupretre, Fabien; Colas, Thibault; Haloua, Frédérique; Gozlan, Bruno; Murugan, Arul (Peer reviewed; Journal article, 2019)
    Fuel cell electric vehicles and hydrogen refuelling infrastructure are developing quickly in Europe, the USA and Asia. Hydrogen quality for transport applications requires compliance with ISO 14687-2: 2012 and EN 17124:2018 ...
  • Experiences with Thermal Spray Zinc Duplex Coatings on Road Bridges 

    Knudsen, Ole Øystein; Matre, Håkon; Dørum, Cato; Gagné, Martin (Peer reviewed; Journal article, 2019)
    Road bridges are typically designed with a 100-year lifetime, so protective coatings with very long durability are desired. Thermal spray zinc (TSZ) duplex coatings have proven to be very durable. The Norwegian Public Roads ...
  • Impact of thermal history on defects formation in the last solid fraction of Cz silicon ingots 

    Lanterne, Adeline Anne; Gaspar, Guilherme Manuel Morais; Haave, Bjørn; Jomâa, Moez; Søndenå, Rune; Hupfer, Alexander; Hu, Yu; Sabatino, Marisa Di (Peer reviewed; Journal article, 2018)
    For the first time, the impact of the tail detachment on the quality of the last solid fraction of a Czochralski silicon ingot body is reported. Simulations of the thermal history were performed on CGSim software and showed ...
  • Influence of Ce3+ polarons on grain boundary space-charge in proton conducting Y-doped BaCeO3 

    Polfus, Jonathan M.; Pishahang, Mehdi; Bredesen, Rune (Peer reviewed; Journal article, 2018)
    Defect segregation and space-charge formation were investigated for a (0 2 1)[1 0 0] symmetric tilt grain boundary in Y-doped BaCeO3. Density functional theory calculations according to the PBE+U formalism were used to ...
  • Lattice rotations in precipitate free zones in an Al-Mg-Si alloy 

    Christiansen, Emil; Marioara, Calin Daniel; Marthinsen, Knut; Hopperstad, Odd Sture; Holmestad, Randi (Peer reviewed; Journal article, 2018)
    Scanning precession electron diffraction and automated crystal orientation mapping in a transmission electron microscope (TEM) have been applied to quantitatively study the crystal orientation of precipitate free zones ...
  • Bubble distribution in fused quartz crucibles studied by micro X-Ray computational tomography. Comparing 2D and 3D analysis 

    Paulsen, Ove; Rørvik, Stein; Muggerud, Astrid Marie Flattum; Juel, Mari (Peer reviewed; Journal article, 2019)
    Micro X-Ray computational tomography (µ-CT), has been applied to study the bubble distribution across the wall of fused quartz crucibles used for Czochralski pulling of monocrystalline silicon ingots for solar cells. Two ...
  • Catalytic oxidation of NO to NO2 for nitric acid production over a Pt/Al2O3 catalyst 

    Salman, Ata ul Rauf; Enger, Bjørn Christian; Auvray, Xavier; Lødeng, Rune; Menon, Mohan; Waller, David; Rønning, Magnus (Peer reviewed; Journal article, 2018)
    The oxidation of nitric oxide (NO) to nitrogen dioxide (NO2) is a key step both in NOx abatement technologies as well as in the Ostwald process for nitric acid production. A 1 wt.% Pt/Al2O3 catalyst was used to study ...
  • Measurement of anode anisotropy by micro x-ray computed tomography 

    Rørvik, Stein; Lossius, Lorentz Petter (The Minerals, Metals & Materials Series;2367-1181, Peer reviewed; Journal article, 2019)
    Micro X-ray Computed Tomography (CT) is an instrumental method for recording inner structure 3D images without damaging the observed volume. A methodology has been developed by SINTEF for CT of carbonaceous materials, ...
  • Chitosan as a wound dressing starting material: antimicrobial Properties and mode of action 

    Matica, Mariana Adina; Aachmann, Finn Lillelund; Tøndervik, Anne; Sletta, Håvard; Ostafe, Vasile (Peer reviewed; Journal article, 2019)
    Fighting bacterial resistance is one of the concerns in modern days, as antibiotics remain the main resource of bacterial control. Data shows that for every antibiotic developed, there is a microorganism that becomes ...
  • Tailoring Upconversion and Morphology of Yb/Eu Doped Y2O3 Nanostructures by Acid Composition Mediation 

    Nunes, Daniela; Pimentel, Ana; Matias, Mariana; Freire, Tomas; Araujo, A; Silva, Filipe; Gaspar, Patricia; Garcia, Silvia; Almeida Carvalho, Patricia; Fortunato, Elvira; Martins, Rodrigo (Peer reviewed; Journal article, 2019)
    The present study reports the production of upconverter nanostructures composed by a yttrium oxide host matrix co-doped with ytterbium and europium, i.e., Y2O3:Yb3+/Eu3+. These nanostructures were formed through the ...
  • Spinning Cellulose Hollow Fibers Using 1-Ethyl-3-methylimidazolium Acetate–Dimethylsulfoxide Co-Solvent 

    Lei, Linfeng; Lindbråthen, Arne; Sandru, Marius; Gutierrez, Maria Teresa Guzman; Zhang, Xiangping; Hillestad, Magne; He, Xuezhong (Peer reviewed; Journal article, 2018)
    The mixture of the ionic liquid 1-ethyl-3-methylimidazolium acetate (EmimAc) and dimethylsulfoxide (DMSO) was employed to dissolve microcrystalline cellulose (MCC). A 10 wt % cellulose dope solution was prepared for spinning ...
  • Comparing Anodic Bubble Behavior of Anodes from Anisotropic and Isotropic Cokes in Laboratory Scale Aluminum Electrolysis Cells 

    Sommerseth, Camilla; Thorne, Rebecca Jayne; Ratvik, Arne Petter; Rørvik, Stein; Linga, Hogne; Lossius, Lorentz Petter; Svensson, Ann Mari (Peer reviewed; Journal article, 2019)
    During production of aluminum in Hall-Héroult cells, carbon anodes electrochemically oxidize to form mainly CO2. The CO2 bubbles block the anode working surface during growth and coalescence, leading to cell voltage loss ...
  • Bioeconomic Clusters—Background, Emergence, Localization and Modelling 

    Valdes, Gerardo Alfredo Perez; Nørstebø, Vibeke Stærkebye; Ellingsen, May-Britt; Teräs, Jukka; Werner, Adrian (Peer reviewed; Journal article, 2019)
    Industrial Clusters, especially those based on biologically sourced materials and their derivative products, can play an important role in the global shift to more sustainable production methods and ecological economic ...
  • Measuring the thermal conductivity of membrane and porous transport layer in proton and anion exchange membrane water electrolyzers for temperature distribution modeling 

    Bock, Robert; Karoliussen, Håvard; Seland, Frode; Pollet, Bruno; Thomassen, Magnus; Holdcroft, Steven; Burheim, Odne Stokke (Peer reviewed; Journal article, 2019)
    Water electrolyzers that use a membrane electrolyte between the electrodes are a promising technology towards mass production of renewable hydrogen. High power setups produce a lot of heat which has to be transported through ...
  • Environmental impacts of a chemical looping combustion power plant 

    Thorne, Rebecca Jayne; Bouman, Evert; Sundseth, Kyrre; Sanchez, Maria Asuncion Aranda; Czakiert, Tomasz; Pacyna, Jozef M; Pacyna, Elisabeth G; Krauz, Mariusz; Celińska, Agnieszka (Peer reviewed; Journal article, 2019)
    Chemical Looping Combustion (CLC) is a promising CO2 capture option since it inherently separates CO2 from other flue components, theoretically with low energy penalty. Here, a Life Cycle Assessment model was developed of ...
  • Performance and failure analysis of full cell lithium ion battery with LiNi0.8Co0.15Al0.05O2 and silicon electrodes 

    Wagner, Nils Peter; Asheim, Karina; Vullum-Bruer, Fride; Svensson, Ann Mari (Journal article; Peer reviewed, 2019)
    The influence of the lithium inventory on the performance and degradation mechanism of NCA||Si cells operating at a third of the theoretical silicon capacity is analysed. The lithium inventory was increased by electrochemical ...
  • Mixed proton and electron conducting double perovskite anodes for stable and efficient tubular proton ceramic electrolysers 

    Vøllestad, Einar; Strandbakke, Ragnar; Tarach, Mateusz; Catalán-Martinez, David; Fontaine, Marie-Laure; Beeaff, Dustin; Clark, Daniel Ryan; Serra, José M.; Norby, Truls Eivind (Peer reviewed; Journal article, 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 ...
  • Crystallinity of silicon nanoparticles: Direct influence on the electrochemical performance of lithium ion battery anodes 

    Ulvestad, Asbjørn; Reksten, Anita; Andersen, Hanne Flåten; Almeida Carvalho, Patricia; Jensen, Ingvild Julie Thue; Nagell, Marius Uv; Mæhlen, Jan Petter; Kirkengen, Martin; Koposov, Alexey (Peer reviewed; Journal article, 2020)
    The use of silicon (Si) in the form of nanoparticles is one of the most promising routes for boosting the capacity of modern Li‐ion batteries. Many parameters influence the performance of Si making the comparison of materials ...
  • Laboratory scale study of reverse priming in aluminium filtration 

    Bao, Sarina; Syvertsen, Martin; Syvertsen, Freddy; Gihleengen, Britt Elin; Tundal, Ulf; Pettersen, Tanja (The Minerals, Metals & Materials Series;2367-1181, Peer reviewed; Journal article, 2019)
    Inclusions are one of the most serious problems encountered in aluminium production and melt treatment. Even small inclusions, not larger than a few tens of micrometres, can potentially have considerable consequences for ...

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