Browsing NTNU Open by Author "Gullbrekken, Øystein"
Now showing items 1-9 of 9
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Charge Transport in Water-NaCl Electrolytes with Molecular Dynamics Simulations
Gullbrekken, Øystein; Røe, Ingeborg Treu; Selbach, Sverre Magnus; Schnell, Sondre Kvalvåg (Peer reviewed; Journal article, 2023)A systematic description of microscopic mechanisms is necessary to understand mass transport in solid and liquid electrolytes. From Molecular Dynamics (MD) simulations, transport properties can be computed and provide a ... -
Choice of Liquid Electrolytes In Anode Free Lithium Metal Batteries and its Impact on Lithium Morphology
Hirsch, Joakim (Bachelor thesis, 2022)En økning i etterspørser for energitette batterier fra elektriske kjøretøy har gitt insentiv for å utvikle ny teknologi for energitett lagring av elektrisitet. En teknologi som har muligheten til å fylle etterspørselen er ... -
Coupled Ion Transport in Concentrated PEO-LiTFSI Polymer Electrolytes
Gullbrekken, Øystein; Schnell, Sondre Kvalvåg (Peer reviewed; Journal article, 2023)Understanding how microscopic mechanisms govern macroscopic transport properties is important for development of improved electrolytes for Li-ion batteries. The archetypal polymer electrolyte PEO–LiTFSI has been investigated ... -
Coupled Transport in Li-ion Battery Electrolytes
Gullbrekken, Øystein (Doctoral theses at NTNU;2024:187, Doctoral thesis, 2024)Electrolytes are materials that contain mobile charge carriers – ions. The electrolyte in lithium-ion batteries enables the transport of positive Li+ ions in between the electrodes during battery operation. The transport ... -
Effect of the Ion, Solvent, and Thermal Interaction Coefficients on Battery Voltage
Gullbrekken, Øystein; Gunnarshaug, Astrid Fagertun; Lervik, Anders; Kjelstrup, Signe; Schnell, Sondre Kvalvåg (Peer reviewed; Journal article, 2024)In order to increase the adoption of batteries for sustainable transport and energy storage, improved charging and discharging capabilities of lithium-ion batteries are necessary. To achieve this, accurate data that describe ... -
Molecular Dynamics Simulation of the Graphite-Electrolyte Interface in Lithium-Ion Batteries
Puntervold, Astrid Harboe (Master thesis, 2023)Energilagring er nøkkelen for å muliggjøre effektiv utnyttelse av fornybare energikilder. Prognoser viser at den globale etterspørselen etter litium-ion-batterier forventes en årlig vekst på rundt 33 % innen 2030. Selv ... -
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 ... -
Transport coefficients for ion and solvent coupling. The case of the lithium-ion battery electrolyte
Kjelstrup, Signe Helene; Gunnarshaug, Astrid Fagertun; Gullbrekken, Øystein; Schnell, Sondre Kvalvåg; Lervik, Anders (Peer reviewed; Journal article, 2023)Transport properties are essential for the understanding and modeling of electrochemical cells, in particular complex systems like lithium-ion batteries. In this study, we demonstrate how a certain degree of freedom in the ...