Browsing NTNU Open by Author "Ulvestad, Asbjørn"
Now showing items 1-5 of 5
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A Stability Study of Substoichiometric Silicon Nitride Nanoparticles as Active Anode Material for Li-ion Batteries
Krogsæter, Henrik (Master thesis, 2019)De fremragende elektrokjemiske egenskapene til understøkiometrisk silisium nitrid (SiNx) har gjort dette material til en potensiell kandidat for neste generasjons Li-ion batteri aktive anode materiale. Den først litsieringen ... -
Anodes for Li‑ion batteries prepared from microcrystalline silicon and enabled by binder’s chemistry and pseudo‑self‑healing
Foss, Carl Erik Lie; Stephan, Müssig; Svensson, Ann Mari; Vie, Preben Joakim Svela; Ulvestad, Asbjørn; Mæhlen, Jan Petter; Koposov, Alexey (Peer reviewed; Journal article, 2020)Silicon, while suffering from major degradation issues, has been recognized as a next promising material to replace currently used graphite in the anodes of Li-ion batteries. Several pathways to mitigate the capacity fading ... -
Porous Silicon as Anode Material for Li-ion Batteries: Structure and Performance
Ulvestad, Asbjørn (Master thesis, 2013)Silicon has proven to have a great potential as anode material in lithium-ion batteries due to its high theoretical electrochemical capacity. However, silicon anodes deteriorate quickly during cyclic charging and discharging, ... -
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 ...