Browsing NTNU Open by Author "Foss, Carl Erik Lie"
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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 ... -
Edge/basal/defect ratios in graphite and their influence on the thermal stability of lithium ion batteries
Foss, Carl Erik Lie; Svensson, Ann Mari; Sunde, Svein; Vullum-Bruer, Fride (Journal article, 2016)Raw graphite can be processed industrially in large quanta but for the graphite to be useful in lithium ion batteries (LIB's) certain parameters needs to be optimized. Some key parameters are graphite morphology, active ... -
Electrochemical impedance spectroscopy of a porous graphite electrode used for Li-ion batteries with EC/PC based electrolytes
Foss, Carl Erik Lie; Svensson, Ann Mari; Sunde, Svein; Vullum-Bruer, Fride (Journal article; Peer reviewed, 2012)Electrochemical impedance spectroscopy has been employed to investigate different electrolyte compositions used for lithium-ion batteries. Diffusion coefficients in ethylene carbonate (EC) was estimated to be in order 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 ... -
Stability of the Graphite Electrode for Li-ion Batteries
Mattson, Ingrid Roten (Master thesis, 2013)This thesis has focused on the characterization of two different graphite materials, in order to gain an improved understanding of how composition of the electrolyte and cycling of the battery influences the stability of ... -
Stoichiometry-Controlled Reversible Lithiation Capacity in Nanostructured Silicon Nitrides Enabled by in Situ Conversion Reaction
Ulvestad, Asbjørn; Skare, Marte Orderud; Foss, Carl Erik Lie; Krogsæter, Henrik; Reichstein, Jakob; Preston, Thomas J.; Mæhlen, Jan Petter; Andersen, Hanne Flåten; Koposov, Alexey (Peer reviewed; Journal article, 2021)In modern Li-based batteries, alloying anode materials have the potential to drastically improve the volumetric and specific energy storage capacity. For the past decade silicon has been viewed as a “Holy Grail” among these ... -
Temperature effects on performance of graphite anodes in carbonate based electrolytes for lithium ion batteries
Foss, Carl Erik Lie; Svensson, Ann Mari; Gullbrekken, Øystein; Sunde, Svein; Vullum-Bruer, Fride (Journal article; Peer reviewed, 2018)The performance of graphite electrodes in various electrolytes containing ethylene carbonate (EC) and mixtures of EC and propylene carbonate (PC) was studied at temperatures between 0 and 40 °C. Included in the study was ... -
Thermal characterisation of anode materials for Li-ion batteries
Gullbrekken, Øystein (Master thesis, 2012)Coin cells with lithium and graphite electrodes were assembled using different combinations of graphite material and electrolyte. Specifically, three commercially available graphite materials and five electrolyte compositions ... -
Thermal Stability and Electrochemical Performance of Graphite Anodes in Li-ion Batteries
Foss, Carl Erik Lie (Doktoravhandlinger ved NTNU, 1503-8181; 2014:101, Doctoral thesis, 2014)