• Chemical stability and H2 flux degradation of cercer membranes based on lanthanum tungstate and lanthanum chromite 

      Polfus, Jonathan M.; Li, Zuoan; Xing, Wen; Sunding, Martin Fleissner; Walmsley, John; Fontaine, Marie-Laure; Henriksen, Partow Pakdel; Bredesen, Rune (Peer reviewed; Journal article, 2016)
      Ceramic–ceramic composite (cercer) membranes of (Mo-doped) lanthanum tungstate, La27(W,Mo)5O55.5−δ, and lanthanum chromite, La0.87Sr0.13CrO3−δ, have recently been shown to exhibit H2 permeabilities among state-of-the-art. ...
    • Doping strategies for increased oxygen permeability of CaTiO3 based membranes 

      Polfus, Jonathan M.; Xing, Wen; Sunding, Martin Fleissner; Hanetho, Sidsel Meli; Dahl, Paul Inge; Larring, Yngve; Fontaine, Marie-Laure; Bredesen, Rune (Peer reviewed; Journal article, 2015)
      Oxygen permeation measurements are performed on dense samples of CaTi0.85Fe0.15O3−δ, CaTi0.75Fe0.15Mg0.05O3−δ and CaTi0.75Fe0.15Mn0.10O3−δ in combination with density functional theory (DFT) calculations and X-ray photoelectron ...
    • Enhanced O2 flux of CaTi0.85Fe0.15O3 – d based membranes by Mn doping 

      Polfus, Jonathan M.; Xing, Wen; Riktor, Marit Dalseth; Sunding, Martin Fleissner; Dahl, Paul Inge; Hanetho, Sidsel Meli; Mokkelbost, Tommy; Larring, Yngve; Fontaine, Marie-Laure; Bredesen, Rune (Peer reviewed; Journal article, 2016)
      Dense symmetric membranes of CaTi0.85−xFe0.15MnxO3−δ (x = 0.1, 0.15, 0.25, 0.4) are investigated in order to determine the optimal Mn dopant content with respect to highest O2 flux. O2 permeation measurements are performed ...
    • Factors Limiting the Apparent Hydrogen Flux in Asymmetric Tubular Cercer Membranes Based on La27W3.5Mo1.5O55.5−δ and La0.87Sr0.13CrO3−δ 

      Li, Zuoan; Polfus, Jonathan Marc; Xing, Wen; Denonville, Christelle; Fontaine, Marie-Laure; Bredesen, Rune (Journal article; Peer reviewed, 2019)
      Asymmetric tubular ceramic–ceramic (cercer) membranes based on La27W3.5Mo1.5O55.5−δ-La0.87Sr0.13CrO3−δ were fabricated by a two-step firing method making use of water-based extrusion and dip-coating. The performance of the ...
    • Hydrogen separation membranes based on dense ceramic composites in the La27W5O55.5–LaCrO3 system 

      Polfus, Jonathan M.; Xing, Wen; Fontaine, Marie-Laure; Denonville, Christelle; Henriksen, Partow Pakdel; Bredesen, Rune (Peer reviewed; Journal article, 2015)
      Some compositions of ceramic hydrogen permeable membranes are promising for integration in high temperature processes such as steam methane reforming due to their high chemical stability in large chemical gradients and CO2 ...
    • Improved CO2 flux by dissolution of oxide ions into the molten carbonate phase of dual-phase CO2 separation membranes 

      Xing, Wen; Li, Zuoan; Peters, Thijs; Fontaine, Marie-Laure; McCann, Michael; Evans, Anna; Norby, Truls Eivind; Bredesen, Rune (Peer reviewed; Journal article, 2019)
      In a solid-liquid dual-phase CO2 separation membrane, the native ions in the molten alkali carbonate, including carbonate anions and metal cations can transport CO2 in a process that is charge-compensated by electronic ...
    • Metallic foam supported electrodes for molten carbonate fuel cells 

      Wejrzanowski, Tomasz; Cwieka, K.; Skibinski, J.; Brynk, T.; Haj Ibrahim, S.; Milewski, J.; Xing, Wen (Peer reviewed; Journal article, 2020)
      This paper demonstrates the benefits of using a metallic foam support within molten carbonate fuel cell (MCFC) cathodes. A state-of-the-art fabrication process based on tape casting has been developed to produce microporous ...
    • Oxygen permeation and creep behavior of Ca1-xSrxTi0.6Fe0.15Mn0.25O3-δ (x=0, 0.5) membrane materials 

      Polfus, Jonathan M.; Xing, Wen; Pecanac, Goran; Fossdal, Anita; Hanetho, Sidsel Meli; Larring, Yngve; Malzbender, Jürgen; Fontaine, Marie-Laure; Bredesen, Rune (Peer reviewed; Journal article, 2016)
      Oxygen permeation measurements were performed on dense symmetric samples of Ca0.5Sr0.5Ti0.6Fe0.15Mn0.25O3−δ and compared to CaTi0.6Fe0.15Mn0.25O3−δ in order to assess the influence of the perovskite lattice volume on oxygen ...
    • Single digit parts-per-billion NOx detection using MoS2/hBN transistors 

      Ali, Ayaz; Koybasi, Ozhan; Xing, Wen; Wright, Daniel Nilsen; Varandani, Deepak; Taniguchi, Takashi; Watanabe, Kenji; Mehta, Bodh R.; Belle, Branson (Peer reviewed; Journal article, 2020)
      2D materials offer excellent possibilities for high performance gas detection due to their high surface-to-volume ratio, high surface activities, tunable electronic properties and dramatic change in resistivity upon molecular ...
    • Thermochemically stable ceramic compositemembranes based on Bi2O3 for oxygen separationwith high permeability 

      Xing, Wen; Almeida Carvalho, Patricia; Polfus, Jonathan M.; Li, Zuoan (Journal article; Peer reviewed, 2019)
      Ceramic oxygen separation membranes can be utilized to reduce CO2 emissions in fossil fuel power generation cycles based on oxy-fuel combustion. State-of-the-art oxygen permeable membranes based on Ba0.5Sr0.5Co0.8Fe0.2O3−δ ...