Blar i Institutt for fysikk på forfatter "Ulvestad, Asbjørn"

Viser treff 1-3 av 3

    • Silicon Nanoparticle Ensembles for Lithium-Ion Batteries Elucidated by Small-Angle Neutron Scattering 

      Lai, Samson Yuxiu; Knudsen, Kenneth Dahl; Sejersted, Benjamin Tjeltveit; Ulvestad, Asbjørn; Mæhlen, Jan Petter; Koposov, Alexey (Journal article; Peer reviewed, 2019)
      Silicon in the form of nanoparticles has attracted significant interest in the field of lithium-ion batteries due to the enormous capability of lithium intake. In the present work we demonstrate the characterization of ...

    • Silicon-carbon composite anodes from industrial battery grade silicon 

      Foss, Carl Erik Lie; Andersen, Hanne Flåten; Ulvestad, Asbjørn; Kirkengen, Martin; Vullum, Per Erik; Voje, Jorunn; Tronstad, Ragnar; Mokkelbost, Tommy; Mæhlen, Jan Petter (Journal article; Peer reviewed, 2019)
      In this work, silicon/carbon composites for anode electrodes of Li-ion batteries are prepared from Elkem’s Silgrain® line. Gentle ball milling is used to reduce particle size of Silgrain, and the resulting Si powder consists ...

    • Transmission Electron Microscopy Characterization of Degradation Mechanisms in Lithium-ion Batteries 

      Sepehri, Armand (Master thesis, 2022)
      Litium-ion batterier har fremtredd som en lovende løsning for det økende behovet for bærbare, effektive og billige energilagringsenheter. Grafitt har blitt brukt som anodemateriale i kommersielle litium-ion batterier siden ...