Helmer Fjellvåg

Bilde av Helmer Fjellvåg
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Telefon +47 22855564
Mobiltelefon +47 41633921
Rom Ø 140
Brukernavn
Besøksadresse Sem Sælands vei 26 0371 Oslo
Postadresse Postboks 1033 0315 Oslo
Emneord: Energi, SMN

Publikasjoner

  • Brennhagen, Anders; Cavallo, Carmen; Wragg, David; Sottmann, Jonas; Koposov, Alexey & Fjellvåg, Helmer (2021). Understanding the (De)Sodiation Mechanisms in Na‐Based Batteries through Operando X‐Ray Methods. Batteries & Supercaps.  ISSN 2566-6223. . doi: 10.1002/batt.202000294 Vis sammendrag
  • Karthikeyan, Jayakumar; Fjellvåg, Helmer; Bundli, Silje & Sjåstad, Anja Olafsen (2021). Efficient Exfoliation of Layered Double Hydroxides; Effect of Cationic Ratio, Hydration State, Anions and Their Orientations. Materials.  ISSN 1996-1944.  14(2) . doi: 10.3390/ma14020346
  • Schuler, Raphael; Bianchini, Federico; Norby, Truls Eivind & Fjellvåg, Helmer (2021). Near-Broken-Gap Alignment between FeWO4 and Fe2WO6 for Ohmic Direct p–n Junction Thermoelectrics. ACS Applied Materials & Interfaces.  ISSN 1944-8244.  13(6), s 7416- 7422 . doi: 10.1021/acsami.0c19341
  • Sønsteby, Henrik Hovde; Skaar, Erik; Fjellvåg, Helmer & Nilsen, Ola (2021). Effect of Subcycle Arrangement on Direct Epitaxy in ALD of LaNiO3. ACS Applied Electronic Materials.  ISSN 2637-6113.  3(1), s 292- 298 . doi: 10.1021/acsaelm.0c00855
  • Arstad, Bjørnar; Blom, Richard; Håkonsen, Silje Fosse; Pierchala, Joanna; Cobden, Paul; Lundvall, Fredrik; Kalantzopoulos, Georgios N.; Wragg, David; Fjellvåg, Helmer & Sjåstad, Anja Olafsen (2020). Synthesis and Evaluation of K-Promoted Co3-xMgxAl-Oxides as Solid CO2 Sorbents in the Sorption-Enhanced Water−Gas Shift (SEWGS) Reaction. Industrial & Engineering Chemistry Research.  ISSN 0888-5885.  59(40), s 17837- 17844 . doi: 10.1021/acs.iecr.0c02322 Fulltekst i vitenarkiv. Vis sammendrag
  • Bernal, Fabian Leonardo Martinez; Gonano, Bruno Raymond Gino; Lundvall, Fredrik; Wragg, David; Fjellvåg, Helmer; Veillon, Fabien; Sławińsk, Wojciech & Fjellvåg, Øystein (2020). Canted antiferromagnetism in high-purity NaFeF3 prepared by a novel wet-chemical synthesis method. PHYSICAL REVIEW MATERIALS.  ISSN 2475-9953.  4(11) . doi: 10.1103/PhysRevMaterials.4.114412 Fulltekst i vitenarkiv.
  • Bernal, Fabian Leonardo Martinez; Sottmann, Jonas; Wragg, David; Fjellvåg, Helmer; Fjellvåg, Øystein; Drathen, Christina; Slawinski, Wojciech Andrzej & Løvvik, Ole Martin (2020). Structural and magnetic characterization of the elusive Jahn-Teller active NaCrF3. PHYSICAL REVIEW MATERIALS.  ISSN 2475-9953.  4(5) . doi: 10.1103/PhysRevMaterials.4.054412 Fulltekst i vitenarkiv.
  • Bratvold, Jon E.; Fjellvåg, Helmer & Nilsen, Ola (2020). Phase and Orientation Control of NiTiO3 Thin Films. Materials.  ISSN 1996-1944.  13(1), s 1- 19 . doi: 10.3390/ma13010112 Fulltekst i vitenarkiv.
  • Dietzel, Pascal D.C.; Blom, Richard & Fjellvåg, Helmer (2020). Variability in the formation and framework polymorphism of metal-organic frameworks based on yttrium(III) and the bifunctional organic linker 2,5-dihydroxyterephthalic acid. Zeitschrift für Anorganische und Allgemeines Chemie.  ISSN 0044-2313.  647(1), s 15- 25 . doi: 10.1002/zaac.202000276 Fulltekst i vitenarkiv. Vis sammendrag
  • Dietzel, Pascal D.C.; Georgiev, Peter A.; Frøseth, Morten; Johnsen, Rune E.; Fjellvåg, Helmer & Blom, Richard (2020). Effect of larger pore size on the sorption properties of isoreticular metal–organic frameworks with high number of open metal sites. Chemistry - A European Journal.  ISSN 0947-6539.  26, s 13523- 13531 . doi: 10.1002/chem.202001825 Fulltekst i vitenarkiv. Vis sammendrag
  • Duparc, Marion Jeanne Louise; Sønsteby, Henrik Hovde; Nilsen, Ola; Sjåstad, Anja Olafsen & Fjellvåg, Helmer (2020). Atomic Layer Deposition of GdCoO3 and Gd0.9Ca0.1CoO3. Materials.  ISSN 1996-1944.  13(1), s 1- 10 . doi: 10.3390/ma13010024 Fulltekst i vitenarkiv.
  • El-Kharbachi, Abdelouahab; Wind, Julia; Ruud, Amund; Høgset, Astrid Bygdås; Nygård, Magnus Moe; Zhang, Junxian; Sørby, Magnus Helgerud; Kim, Sangryun; Cuevas, Fermin; Orimo, Shin-Ichi; Fichtner, Maximilian; Latroche, Michel; Fjellvåg, Helmer & Hauback, Bjørn (2020). Pseudo-ternary LiBH4-LiCl-P2S5 system as structurally disordered bulk electrolyte for all-solid-state lithium batteries. Physical Chemistry, Chemical Physics - PCCP.  ISSN 1463-9076.  22(25), s 13872- 13879 . doi: 10.1039/d0cp01334j Fulltekst i vitenarkiv.
  • Fjellvåg, Øystein; Ruud, Amund; Sønsteby, Henrik Hovde; Nilsen, Ola & Fjellvåg, Helmer (2020). Crystallization, Phase Stability, and Electrochemical Performance of β-MoO3 Thin Films. Crystal Growth & Design.  ISSN 1528-7483.  20(6), s 3861- 3866 . doi: 10.1021/acs.cgd.0c00156 Vis sammendrag
  • Gonano, Bruno Raymond Gino; Fjellvåg, Øystein; Steciuk, Gwladys; Saha, Dipankar; Pelloquin, Denis & Fjellvåg, Helmer (2020). Exotic Compositional Ordering in Manganese–Nickel–Arsenic (Mn-Ni-As) Intermetallics. Angewandte Chemie International Edition.  ISSN 1433-7851.  132(50), s 22568- 22573 . doi: 10.1002/anie.202006135 Fulltekst i vitenarkiv.
  • Hu, Yang; Miikkulainen, Ville; Mizohata, Kenichiro; Norby, Truls Eivind; Nilsen, Ola & Fjellvåg, Helmer (2020). Ionic conductivity in LixTaOy thin films grown by Atomic Layer Deposition (ALD). Electrochimica Acta.  ISSN 0013-4686.  361 . doi: 10.1016/j.electacta.2020.137019 Fulltekst i vitenarkiv.
  • Kalantzopoulos, Georgios N.; Lundvall, Fredrik; Thorshaug, Knut; Lind, Anna Maria; Vajeeston, Ponniah; Dovgaliuk, Iurii; Arstad, Bjørnar; Wragg, David & Fjellvåg, Helmer (2020). Factors Determining Microporous Material Stability in Water: The Curious Case of SAPO-37. Chemistry of Materials.  ISSN 0897-4756.  32(4), s 1495- 1505 . doi: 10.1021/acs.chemmater.9b04510 Fulltekst i vitenarkiv.
  • Li, Xinyu; Bianchini, Federico; Wind, Julia; Pettersen, Christine; Vajeeston, Ponniah; Wragg, David & Fjellvåg, Helmer (2020). Insights into Crystal Structure and Diffusion of Biphasic Na2Zn2TeO6. ACS Applied Materials & Interfaces.  ISSN 1944-8244.  12(25), s 28188- 28198 . doi: 10.1021/acsami.0c05863 Fulltekst i vitenarkiv.
  • Pal, Santosh Kumar; Frommen, Christoph; Kumar, Susmit; Hauback, Bjørn; Fjellvåg, Helmer & Helgesen, Geir (2020). Enhancing giant magnetocaloric effect near room temperature by inducing magnetostructural coupling in Cu-doped MnCoGe. Materials & design.  ISSN 0264-1275.  195, s 1- 11 . doi: 10.1016/j.matdes.2020.109036 Fulltekst i vitenarkiv.
  • Periyasamy, Manimuthu; Fjellvåg, Øystein; Fjellvåg, Helmer & Sjåstad, Anja Olafsen (2020). Coupling of magnetoresistance switching and glassy magnetic state at the metal–insulator transition in Ruddlesden-Popper manganite Ca4Mn3O10. Journal of Magnetism and Magnetic Materials.  ISSN 0304-8853.  511, s 1- 8 . doi: 10.1016/j.jmmm.2020.166949 Fulltekst i vitenarkiv.
  • Schuler, Raphael; Norby, Truls Eivind & Fjellvåg, Helmer (2020). Defects and polaronic electron transport in Fe2WO6. Physical Chemistry, Chemical Physics - PCCP.  ISSN 1463-9076.  22(27), s 15541- 15548 . doi: 10.1039/d0cp01588a Fulltekst i vitenarkiv.
  • Sønsteby, Henrik Hovde; Bratvold, Jon Einar; Killi, Veronica Anne-Line Kathrine; Choudhury, Devika; Elam, Jeffrey W.; Fjellvåg, Helmer & Nilsen, Ola (2020). tert-butoxides as precursors for atomic layer deposition of alkali metal containing thin films. Journal of Vacuum Science & Technology. A. Vacuum, Surfaces, and Films.  ISSN 0734-2101.  38, s 1- 15 . doi: 10.1116/6.0000589 Fulltekst i vitenarkiv.
  • Sønsteby, Henrik Hovde; Killi, Veronica Anne-Line Kathrine; Storaas, Thomas Aarflot; Choudhuy, Devika; Elam, Jeffrey W.; Fjellvåg, Helmer & Nilsen, Ola (2020). Understanding KOtBu in atomic layer deposition–in situ mechanistic studies of the KNbO3 growth process. Dalton Transactions.  ISSN 1477-9226. . doi: 10.1039/D0DT02324H
  • Sønsteby, Henrik Hovde; Skaar, Erik; Bratvold, Jon Einar; Freeland, John W.; Yanguas-Gil, Angel; Elam, Jeffrey W.; Nilsen, Ola & Fjellvåg, Helmer (2020). Tuning electronic properties in LaNiO3 thin films by B-site Cu-substitution. Journal of Materials Chemistry C.  ISSN 2050-7526.  8, s 12662- 12668 . doi: 10.1039/D0TC03406A
  • Sønsteby, Henrik Hovde; Skaar, Erik; Fjellvåg, Øystein; Bratvold, Jon E.; Fjellvåg, Helmer & Nilsen, Ola (2020). A foundation for complex oxide electronics -low temperature perovskite epitaxy. Nature Communications.  ISSN 2041-1723.  11(1) . doi: 10.1038/s41467-020-16654-2 Fulltekst i vitenarkiv.
  • Zacharaki, Eirini; Bremmer, Marien G.; Vajeeston, Ponniah; Kalyva, Maria Evangelou; Fjellvåg, Helmer; Kooyman, Patricia J. & Sjåstad, Anja Olafsen (2020). One-pot synthesis of cobalt-rhenium nanoparticles taking the unusual beta-Mn type structure. Nanoscale Advances.  2, s 1850- 1853 . doi: 10.1039/d0na00097c Fulltekst i vitenarkiv.
  • Bianchini, Federico; Fjellvåg, Helmer & Vajeeston, Ponniah (2019). Nonhexagonal Na Sublattice Reconstruction in the Super-Ionic Conductor Na2Zn2TeO6: Insights from Ab Initio Molecular Dynamics. Journal of Physical Chemistry C.  ISSN 1932-7447.  123(8), s 4654- 4663 . doi: 10.1021/acs.jpcc.8b10362
  • Bratvold, Jon E.; Sønsteby, Henrik Hovde; Nilsen, Ola & Fjellvåg, Helmer (2019). Control of growth orientation in as-deposited epitaxial iron-rich nickel ferrite spinel. Journal of Vacuum Science & Technology. A. Vacuum, Surfaces, and Films.  ISSN 0734-2101.  37(2), s 1- 7 . doi: 10.1116/1.5082012 Fulltekst i vitenarkiv.
  • Bundli, Silje; Dhak, Prasanta; Jensen, Martin; Gunnæs, Anette Eleonora; Nguyen, Phuong Dan; Fjellvåg, Helmer & Sjåstad, Anja Olafsen (2019). Controlled alloying of Pt-Rh nanoparticles by the polyol approach. Journal of Alloys and Compounds.  ISSN 0925-8388.  779, s 879- 885 . doi: 10.1016/j.jallcom.2018.11.301
  • Kiruthika, S.; Fjellvåg, Helmer & Ravindran, P. (2019). Amphoteric behavior of hydrogen (H+1 and H-1) in complex hydrides from van der Waals interaction-including ab initio calculations. Journal of Materials Chemistry A.  ISSN 2050-7488.  7(11), s 6228- 6240 . doi: 10.1039/c8ta11685g
  • Kumar, Susmit; Fjellvåg, Øystein; Sjåstad, Anja Olafsen & Fjellvåg, Helmer (2019). Physical properties of Ruddlesden-Popper (n = 3) nickelate: La4Ni3O10. Journal of Magnetism and Magnetic Materials.  ISSN 0304-8853.  496 . doi: 10.1016/j.jmmm.2019.165915 Fulltekst i vitenarkiv.
  • Kumar, Susmit; Waller, David; Fjellvåg, Helmer & Sjåstad, Anja Olafsen (2019). Development of custom made bimetallic alloy model systems based on platinum-rhodium for heterogeneous catalysis. Journal of Alloys and Compounds.  ISSN 0925-8388.  786, s 1021- 1029 . doi: 10.1016/j.jallcom.2019.02.026 Fulltekst i vitenarkiv. Vis sammendrag
  • Li, Xinyu; Bianchini, Federico; Wind, Julia; Vajeeston, Ponniah; Wragg, David & Fjellvåg, Helmer (2019). P2 Type Layered Solid-State Electrolyte Na2Zn2TeO6: Crystal Structure and Stacking Faults. Journal of the Electrochemical Society.  ISSN 0013-4651.  166(15), s A3830- A3837 . doi: 10.1149/2.1231915jes
  • Lundvall, Fredrik; Kalantzopoulos, Georgios N.; Wragg, David; Arstad, Bjørnar; Blom, Richard; Sjåstad, Anja Olafsen & Fjellvåg, Helmer (2019). Characterization and evaluation of synthetic Dawsonites as CO2 sorbents. Fuel.  ISSN 0016-2361.  236, s 747- 754 . doi: 10.1016/j.fuel.2018.09.057 Fulltekst i vitenarkiv.
  • Pal, Santosh Kumar; Frommen, Christoph; Kumar, Susmit; Hauback, Bjørn; Fjellvåg, Helmer; Woodcock, T. G.; Nielsch, K & Helgesen, Geir (2019). Comparative phase transformation and magnetocaloric effect study of Co and Mn substitution by Cu in MnCoGe compounds. Journal of Alloys and Compounds.  ISSN 0925-8388.  775, s 22- 29 . doi: 10.1016/j.jallcom.2018.10.040 Fulltekst i vitenarkiv.
  • Patra, Lokanath; Vidya, Ravindran; Fjellvåg, Helmer & Ravindran, Ponniah (2019). Giant Magnetoelectric Coupling in Multiferroic PbTi1–xVxO3 from Density Functional Calculations. ACS Omega.  ISSN 2470-1343. . doi: 10.1021/acsomega.9b01176
  • Ruud, Amund; Sottmann, Jonas; Vajeeston, Ponniah & Fjellvåg, Helmer (2019). Direct observation of reversible conversion and alloying reactions in a Bi2(MoO4)3-based lithium-ion battery anode. Journal of Materials Chemistry A.  ISSN 2050-7488.  7(30), s 17906- 17913 . doi: 10.1039/c9ta03459e
  • Sønsteby, Henrik Hovde; Nilsen, Ola & Fjellvåg, Helmer (2019). Chemical Uniformity in Ferroelectric KxNa1−xNbO3 Thin Films. Global Challenges.  ISSN 2056-6646.  3(10), s 1800114 . doi: 10.1002/gch2.201800114 Fulltekst i vitenarkiv.
  • Sønsteby, Henrik Hovde; Wind, Julia; Jensen, Martin; Storaas, Thomas Aarflot; Chernyshov, Dmitry & Fjellvåg, Helmer (2019). In situ synchrotron X-ray diffraction of thin films under perturbation by an electric field. Ferroelectrics (Print).  ISSN 0015-0193.  537, s 20- 26 . doi: 10.1080/00150193.2018.1528953
  • Vajeeston, Ponniah; Bianchini, Federico & Fjellvåg, Helmer (2019). First-Principles Study of the Structural Stability and Dynamic Properties of Li2MSiO4 (M = Mn, Co, Ni) Polymorphs. Energies.  ISSN 1996-1073.  12(224), s 1- 24 . doi: 10.3390/en12020224 Fulltekst i vitenarkiv.
  • Varunaa, R; Fjellvåg, Helmer & Ponniah, Ravindran (2019). Zinc substituted MgH2 - a potential material for hydrogen storage applications. International Journal of Hydrogen Energy.  ISSN 0360-3199.  44(26), s 13632- 13646 . doi: 10.1016/j.ijhydene.2019.04.016
  • Bianchini, Federico; Fjellvåg, Helmer & Vajeeston, Ponniah (2018). A first principle comparative study of the ionic diffusivity in LiAlO2 and NaAlO2 polymorphs for solid-state battery applications. Physical Chemistry, Chemical Physics - PCCP.  ISSN 1463-9076.  20(15), s 9824- 9832 . doi: 10.1039/c8cp00715b
  • Bianchini, Federico; Fjellvåg, Helmer & Vajeeston, Ponniah (2018). A first-principles investigation of the Li difusion mechanism in the super-ionic conductor lithium orthothioborate Li3BS3 structure. Materials Letters.  ISSN 0167-577X.  219, s 186- 189 . doi: 10.1016/j.matlet.2018.02.083 Fulltekst i vitenarkiv.
  • Bianchini, Federico; Fjellvåg, Helmer & Vajeeston, Ponniah (2018). A first-principle study of NaMPO4(M = Mn, Fe, Co, Ni) possible novelstructures as cathode materials for sodium-ion batteries: Structural andelectrochemical characterisation. Materials Chemistry and Physics.  ISSN 0254-0584.  219, s 212- 221 . doi: 10.1016/j.matchemphys.2018.08.007 Fulltekst i vitenarkiv.
  • El-Kharbachi, Abdelouahab; Hu, Yang; Sørby, Magnus Helgerud; Mæhlen, Jan Petter; Vullum, Per Erik; Fjellvåg, Helmer & Hauback, Bjørn (2018). Reversibility of metal-hydride anodes in all-solid-state lithium secondary battery operating at room temperature. Solid State Ionics.  ISSN 0167-2738.  317, s 263- 267 . doi: 10.1016/j.ssi.2018.01.037 Fulltekst i vitenarkiv.
  • El-Kharbachi, Abdelouahab; Hu, Yang; Sørby, Magnus Helgerud; Vullum, Per Erik; Mæhlen, Jan Petter; Fjellvåg, Helmer & Hauback, Bjørn (2018). Understanding Capacity Fading of MgH2 Conversion-Type Anodes via Structural Morphology Changes and Electrochemical Impedance. Journal of Physical Chemistry C.  ISSN 1932-7447.  122(16), s 8750- 8759 . doi: 10.1021/acs.jpcc.7b12656 Fulltekst i vitenarkiv.
  • El-Kharbachi, Abdelouahab; Hu, Yang; Yoshida, Koji; Vajeeston, Ponniah; Kim, Sangryun; Sørby, Magnus Helgerud; Orimo, Shin-Ichi; Fjellvåg, Helmer & Hauback, Bjørn (2018). Lithium ionic conduction in composites of Li(BH4)0.75I0.25 and amorphous 0.75Li2S·0.25P2S5 for battery applications. Electrochimica Acta.  ISSN 0013-4686.  278, s 332- 339 . doi: 10.1016/j.electacta.2018.05.041 Fulltekst i vitenarkiv.
  • El-Kharbachi, Abdelouahab; Uesato, Hiroki; Kawai, Hironori; Wenner, Sigurd; Miyaoka, Hiroki; Sørby, Magnus Helgerud; Fjellvåg, Helmer; Ichikawa, Takayuki & Hauback, Bjørn (2018). MgH2–CoO: a conversion-type composite electrode for LiBH4-based all-solid-state lithium ion batteries. RSC Advances.  ISSN 2046-2069.  8(41), s 23468- 23474 . doi: 10.1039/c8ra03340d Fulltekst i vitenarkiv.
  • Kalantzopoulos, Georgios N.; Lundvall, Fredrik; Checchia, Stefano; Lind, Anna Maria; Wragg, David; Fjellvåg, Helmer & Arstad, Bjørnar (2018). In Situ Flow MAS NMR Spectroscopy and Synchrotron PDF Analyses of the Local Response of the Brønsted Acidic Site in SAPO-34 during Hydration at Elevated Temperatures. ChemPhysChem.  ISSN 1439-4235.  19(4), s 519- 528 . doi: 10.1002/cphc.201700973
  • Ruud, Amund; Sottmann, Jonas; Vajeeston, Ponniah & Fjellvåg, Helmer (2018). Operando Investigations of Lithiation and Delithiation Processes in the BiVO4 Anode Material. Physical Chemistry, Chemical Physics - PCCP.  ISSN 1463-9076.  47, s 29798- 29803 . doi: 10.1039/c8cp05330h Fulltekst i vitenarkiv.
  • Slawinski, Wojciech Andrzej; Zacharaki, Eirini; Fjellvåg, Helmer & Sjåstad, Anja Olafsen (2018). Structural Arrangement in Close-Packed Cobalt Polytypes. Crystal Growth & Design.  ISSN 1528-7483.  18(4), s 2316- 2325 . doi: 10.1021/acs.cgd.7b01736
  • Sønsteby, Henrik Hovde; Aarholt, Thomas; Prytz, Øystein; Fjellvåg, Helmer & Nilsen, Ola (2018). First Complex Oxide Superconductor by Atomic Layer Deposition. Chemical Communications.  ISSN 1359-7345.  54(59), s 8253- 8256 . doi: 10.1039/c8cc04998j
  • Sønsteby, Henrik Hovde; Bratvold, Jon E.; Weibye, Kristian; Fjellvåg, Helmer & Nilsen, Ola (2018). Phase Control in Thin Films of Layered Cuprates. Chemistry of Materials.  ISSN 0897-4756.  30(3), s 1095- 1101 . doi: 10.1021/acs.chemmater.7b05005
  • Vajeeston, Ponniah; Fjellvåg, Helmer & Nilsen, Ola (2018). Search for potential precursors for Si-atomic layer deposition- a quantum chemical study. Materials Letters.  ISSN 0167-577X.  216, s 189- 192 . doi: 10.1016/j.matlet.2018.01.040 Fulltekst i vitenarkiv. Vis sammendrag
  • Zheng, Jian; Ivashenko, Oleksii; Fjellvåg, Helmer; Groot, Irene M. N. & Sjåstad, Anja Olafsen (2018). Roadmap for Modeling RhPt/Pt(111) Catalytic Surfaces. Journal of Physical Chemistry C.  ISSN 1932-7447.  122(46), s 26430- 26437 . doi: 10.1021/acs.jpcc.8b08124
  • Kalyva, Maria Evangelou; Wragg, David; Fjellvåg, Helmer & Sjåstad, Anja Olafsen (2017). Engineering Functions into Platinum and Platinum?Rhodium Nanoparticles in a One-Step Microwave Irradiation Synthesis. ChemistryOpen.  ISSN 2191-1363.  6(2), s 273- 281 . doi: 10.1002/open.201600163
  • Bianchini, Federico; Fjellvåg, Helmer & Vajeeston, Ponniah (2017). First-principles study of the structural stability and electrochemical properties of Na2MSiO4 (M = Mn, Fe, Co and Ni) polymorphs. Physical Chemistry, Chemical Physics - PCCP.  ISSN 1463-9076.  19(22), s 14462- 14470 . doi: 10.1039/c7cp01395g Fulltekst i vitenarkiv.

Se alle arbeider i Cristin

  • Brennhagen, Anders; Cavallo, Carmen; Wragg, David; Vajeeston, Ponniah; Sjåstad, Anja Olafsen & Fjellvåg, Helmer (2021). Bi4V2O11/RGO composite as conversion and alloying anode for Na-ion batteries.
  • Cavallo, Carmen; Brennhagen, Anders; Wragg, David; Fjellvåg, Helmer; Vajeeston, Ponniah & Sjåstad, Anja Olafsen (2021). Beyond Insertion: Conversion alloying Bi/RGO-based materials as novel anodes for Na-ion batteries.
  • Schuler, Raphael; Fjellvåg, Helmer & Norby, Truls Eivind (2021). Oxide thermoelectrics - materials, junctions and modules. Series of dissertations submitted to the Faculty of Mathematics and Natural Sciences, University of Oslo.. 2364. Vis sammendrag
  • Cavallo, Carmen; Brennhagen, Anders; Wragg, David & Fjellvåg, Helmer (2020). Beyond Insertion: Conversion alloying Bi/RGO-based materials as anode for Na-ion batteries.
  • Fjellvåg, Øystein; Sønsteby, Henrik Hovde; Nilsen, Ola; Wolff, Max; Kapaklis, Vassilios; Fjellvåg, Helmer; Frommen, Christoph & Hauback, Bjørn (2020). Towards Multiferroic Thin Film Composites by Atomic Layer Deposition (ALD).
  • Hempel, Frida Sveen; Arstad, Bjørnar & Fjellvåg, Helmer (2020). Layered hexagonal materials - Differences in ionic conductivity for solid-state electrolyte.
  • Hval, Halvor Høen; Tripathi, Alok Mani; Forseth, Sissel & Fjellvåg, Helmer (2020). Understanding the details of crystal structure and electronic states in LNMO.
  • Li, Xinyu; Fjellvåg, Helmer & Nilsen, Ola (2020). Na-Based Layered Tellurate Na2M2TeO6 (M = Zn, Mg): Synthesis, Crystal Structure and Na+ Ion Diffusion.
  • Nygård, Magnus Moe; Hauback, Bjørn Christian; Sørby, Magnus Helgerud & Fjellvåg, Helmer (2020). Local and average structure in high-entropy alloys and associated metal deuterides. Series of dissertations submitted to the Faculty of Mathematics and Natural Sciences, University of Oslo.. 2305.
  • Perizat, Berdiyeva; Hauback, Bjørn Christian; Deledda, Stefano & Fjellvåg, Helmer (2020). Characterization of Heat Storage Materials with Neutron Scattering and Imaging Techniques. Series of dissertations submitted to the Faculty of Mathematics and Natural Sciences, University of Oslo.. 2304. Vis sammendrag
  • Wragg, David; Fjellvåg, Øystein; Fjellvåg, Helmer; Sottmann, Jonas; Vaughan, Gavin B M; Di Michel, Marco & Ruud, Amund (2020). Operando Total Scattering Computed Tomography: Making the Invisible Visible.
  • Bratvold, Jon E.; Nilsen, Ola & Fjellvåg, Helmer (2019). Towards a Model System for Lamellar Magnetism by Atomic Layer Deposition. Series of dissertations submitted to the Faculty of Mathematics and Natural Sciences, University of Oslo.. 2093.
  • Hempel, Frida Sveen; Arstad, Bjørnar; Fjellvåg, Helmer & Li, Xinyu (2019). Na-dynamics in Na2Zn2TeO6, a possible solid-state electrolyte.
  • Hval, Halvor Høen; Ruud, Amund; Forseth, Sissel; Emerich, Hermann; Nilsen, Ola & Fjellvåg, Helmer (2019). Operando investigation of batteries.
  • Hval, Halvor Høen; Tripathi, Alok Mani & Fjellvåg, Helmer (2019). High Energy Density Electrodes for Lithium-ion Batteries and Operando Studies.
  • Hval, Halvor Høen; Tripathi, Alok Mani; Ruud, Amund; Emerich, Hermann; Forseth, Sissel; Nilsen, Ola & Fjellvåg, Helmer (2019). Make Batteries Safe Again.
  • Hval, Halvor Høen; Tripathi, Alok Mani; Ruud, Amund; Emerich, Hermann; Forseth, Sissel; Nilsen, Ola & Fjellvåg, Helmer (2019). Make Batteries Safe Again.
  • Skaar, Erik; Fjellvåg, Helmer & Sønsteby, Henrik Hovde (2019). Structure-Property Relations in Thin Films of LaNiO3 and LaNi1-xCuxO3.
  • Wragg, David; Fjellvåg, Øystein; Ruud, Amund; Fjellvåg, Helmer; Vajeeston, Ponniah; Vaughan, Gavin B M; Di Michel, Marco; lebedev, Oleg & Sottmann, Jonas (2019). XRD/PDF computed tomography and how to get the best possible operando data from ion batteries.
  • Wragg, David; Ruud, Amund; Fjellvåg, Helmer; Fjellvåg, Øystein; Vajeeston, Ponniah; Sottmann, Jonas; Di Michel, Marco; Vaughan, Gavin B M & lebedev, Oleg (2019). PDF Analysis of Batteries Using Diffraction Computed Tomography.
  • Wragg, David; Ruud, Amund; Fjellvåg, Øystein; Fjellvåg, Helmer; lebedev, Oleg; Di Michel, Marco; Sottmann, Jonas; Vajeeston, Ponniah & Vaughan, Gavin B M (2019). PDF Analysis of Batteries Using Diffraction Computed Tomography.
  • Bakke, Ingrid Marie Bergh; Fjellvåg, Helmer & Sjåstad, Anja Olafsen (2018). Struktur og magnetiske egenskaper til de perovskittliknende oksidene ACo0,5B0,5O3 (A = Y, La, Nd; B = Ti, Fe, Ni).
  • El-Kharbachi, Abdelouahab; Høgset, A.; Kim, Sangryun; Vajeeston, Ponniah; Sørby, Magnus Helgerud; Fjellvåg, Helmer; Orimo, Shin-ichi & Hauback, Bjørn (2018). Structural and Electrochemical Study of Mixtures of Halogenated-LiBH4 and Amorphous 0.75Li2S·0.25P2S5 for Li- Conducting Solid Electrolytes.
  • Hval, Halvor Høen; Ruud, Amund; Forseth, Sissel; Emerich, Hermann; Nilsen, Ola & Fjellvåg, Helmer (2018). Operando investigation of batteries.
  • Hval, Halvor Høen; Ruud, Amund; Forseth, Sissel; Emerich, Hermann; Nilsen, Ola & Fjellvåg, Helmer (2018). Operando investigation of batteries.
  • Kalantzopoulos, Georgios N.; Lundvall, Fredrik; Nyborg Broge, Nils Lau; Søndergaard-Pedersen, Frederik M; Lind, Anna Maria; Arstad, Bjørnar; Wragg, David; Brummerstedt-Iversen, Bo & Fjellvåg, Helmer (2018). Real-Time Evolution of SAPO Catalysts' Local Coordination during Hydrothermal Treatment.
  • Liu, Xin; Haugsrud, Reidar; Bjørheim, Tor Svendsen & Fjellvåg, Helmer (2018). Defect, Stability and Transport in Oxyhydrides. Series of dissertations submitted to the Faculty of Mathematics and Natural Sciences, University of Oslo.. 1980.
  • Wragg, David; Ruud, Amund; Sottmann, Jonas; Vajeeston, Ponniah; Fjellvåg, Helmer; Fjellvåg, Øystein; Vaughan, Gavin B M & Di Michel, Marco (2018). New Anodes for Sodium and Lithium Ion Batteries.
  • Wragg, David; Sottmann, Jonas; Ruud, Amund; Fjellvåg, Helmer; Fjellvåg, Øystein; Vajeeston, Ponniah; Vaughan, Gavin; lebedev, Oleg & Di Michel, Marco (2018). Operando X-ray Diffraction Studies of Battery Materials.
  • Zacharaki, Eirini; Sjåstad, Anja Olafsen & Fjellvåg, Helmer (2018). Synthesis and Characterization of Colloidal Co, Co-Re and Ni Nanoparticles for Catalysis. Series of dissertations submitted to the Faculty of Mathematics and Natural Sciences, University of Oslo.. 1982.
  • Sjåstad, Anja Olafsen; Zacharaki, Eirini; Bundli, Silje; Jensen, Martin; Kalyva, Maria Evangelou; Dhak, Prasanta; Kooyman, Patricia J.; Bremmer, Marien G.; Slawiniski, Wojciech Andrzej & Fjellvåg, Helmer (2017). Nanoparticles for heterogeneous catalysis of industrial relevant processes.
  • Ahnfeldt, Tim; Enssle, Marc Christoph; Carrion-Ramirez, Maria del Prado; Fjellvåg, Helmer & Dietzel, Pascal D.C. (2017). Effect of ligand substitution on breathing mode of MOFs with MIL-53 type crystal structure.
  • Arstad, Bjørnar; Blom, Richard; Håkonsen, Silje Fosse; Pierchala, Joanna; Lundvall, Fredrik; Kalantzopoulos, Georgios N.; Fjellvåg, Helmer & Sjåstad, Anja Olafsen (2017). Preparation and evaluation of new sorbent materials for the Sorption Enhanced Water-Gas Shift (SEWGS) reaction.
  • Bernal, Fabian Leonardo Martinez; Fjellvåg, Helmer & Løvvik, Ole Martin (2017). Ternary Iron (II) and Chromium (II) Fluoroperovskites - A Class of Complex Solids. Series of dissertations submitted to the Faculty of Mathematics and Natural Sciences, University of Oslo.. 1898.
  • El-Kharbachi, Abdelouahab; Hu, Yang; Mæhlen, Jan Petter; Sørby, Magnus Helgerud; Fjellvåg, Helmer & Hauback, Bjørn (2017). Hydride Materials in All-Solid Li-Ion Cell Configuration.
  • El-Kharbachi, Abdelouahab; Hu, Yang; Sørby, Magnus Helgerud; Mæhlen, Jan Petter; Fjellvåg, Helmer & Hauback, Bjørn (2017). Contribution of hydride materials to Li-ion battery technology.
  • El-Kharbachi, Abdelouahab; Hu, Yang; Sørby, Magnus Helgerud; Vullum, Per Erik; Mæhlen, Jan Petter; Fjellvåg, Helmer & Hauback, Bjørn (2017). Mechanistic Properties of MgH2–Based Anode As Derived from Structural Morphology Changes Versus Electrochemical Impedance in a Li-Ion Cell.
  • El-Kharbachi, Abdelouahab; Hu, Yang; Yoshida, Koji; Sørby, Magnus Helgerud; Fjellvåg, Helmer; Orimo, Shin-Ichi & Hauback, Bjørn (2017). Ionic Properties of the Li(BH4)0.75I0.25 - 0.75Li2S·0.25P2S5 Mixed System for Near Room-Temperature All-Solid Li-Ion Batteries.
  • El-Kharbachi, Abdelouahab; Hu, Yang; Yoshida, Koji; Sørby, Magnus Helgerud; Ichikawa, Takayuki; Fjellvåg, Helmer; Orimo, Shin-Ichi & Hauback, Bjørn (2017). Hydride materials in all-solid Li-ion cell configuration for room and high temperature applications.
  • El-Kharbachi, Abdelouahab; Uesato, Hiroki; Yamaguchi, S; Sørby, Magnus Helgerud; Miyaoka, H; Ichikawa, Takayuki; Fjellvåg, Helmer & Hauback, Bjørn (2017). Metal Hydride–Oxide Paired Anode for All-Solid Li-Ion Batteries.
  • Fjellvåg, Helmer (2017). Batterier innen transportsektoren - perspektiver.
  • Fjellvåg, Helmer (2017). Battery research at the University of Oslo.
  • Fjellvåg, Helmer (2017). Battery research in Norway.
  • Fjellvåg, Helmer (2017). Functional materials and battery research at UiO.

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Publisert 17. nov. 2010 14:49 - Sist endret 24. okt. 2013 16:33

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