Blar i NTNU Open på forfatter "Svensson, Ann Mari"
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Optimizing carbon coating parameters for obtaining SiO2/C anodes with improved electrochemical performance
Blanco, Maria Valeria; Renman, Viktor; Zhu, Jiefang; Vullum-Bruer, Fride; Svensson, Ann Mari (Peer reviewed; Journal article, 2021)In this work, we present a comprehensive and systematic study on the use of low-cost and highly abundant carbon precursors to obtain SiO2/C anodes with superior electrochemical performance towards Li-ions. Different SiO2/C ... -
Performance and failure analysis of full cell lithium ion battery with LiNi0.8Co0.15Al0.05O2 and silicon electrodes
Wagner, Nils Peter; Asheim, Karina; Vullum-Bruer, Fride; Svensson, Ann Mari (Journal article; Peer reviewed, 2019)The influence of the lithium inventory on the performance and degradation mechanism of NCA||Si cells operating at a third of the theoretical silicon capacity is analysed. The lithium inventory was increased by electrochemical ... -
Product formation during discharge: a combined modelling and experimental study for Li–O2 cathodes in LiTFSI/DMSO and LiTFSI/TEGDME electrolytes
Rauter, Michael Tobias; Augustin, Matthias; Spitthoff, Lena; Svensson, Ann Mari (Peer reviewed; Journal article, 2021)Li–air or Li–O2 batteries are a promising energy storage technology due to the potentially high energy density. However, significant challenges related to reversible charge/discharge of these cells need to be solved. The ... -
Product formation during discharge: a combined modelling and experimental study for Li–O2 cathodes in LiTFSI/DMSO and LiTFSI/TEGDME electrolytes
Rauter, Michael Tobias; Augustin, Matthias; Spitthoff, Lena; Svensson, Ann Mari (Peer reviewed; Journal article, 2021)Li–air or Li–O2 batteries are a promising energy storage technology due to the potentially high energy density. However, significant challenges related to reversible charge/discharge of these cells need to be solved. The ... -
Production Strategies for Sustainable LIB Cathodes with Enhanced Rate Capability and Energy Density
Bryntesen, Silje Nornes (Doctoral theses at NTNU;2023:109, Doctoral thesis, 2023) -
Reactivity of Coke in Relation to Sulfur Level and Microstructure
Jahrsengene, Gøril; Rørvik, Stein; Ratvik, Arne Petter; Lossius, Lorentz Petter; Haverkamp, Richard G.; Svensson, Ann Mari (Journal article; Peer reviewed, 2019)The quality of coke materials available for anodes for the aluminium industry is changing and industrial cokes with higher impurity levels are now introduced. The cokes in the anodes must meet specifications with respect ... -
Revealing mechanisms of activated carbon capacity fade in lithium-ion capacitors
Eleri, Obinna Egwu; Huld, Frederik Thorbjørn; Pires, Julie; Tucho, Wakshum Mekonnen; Schweigart, Philipp; Svensson, Ann Mari; Lou, Fengliu; Yu, Zhixin (Peer reviewed; Journal article, 2023)The capacity fade mechanism of activated carbon (AC) electrode in Li-ion electrolyte was studied via electrochemical impedance spectroscopy (EIS) and post-mortem electrode characterizations at different stages of electrochemical ... -
Side reactions on two types of carbon conductive additives in ionic liquid-based electrolytes for high voltage Li-ion battery cathodes
Langli, Helene Lillevestre (Master thesis, 2023)Litium-ionbatterier (LIBs) er et godt alternativ for energilagring i elektriske kjøretøy og stasjonær lagring, for eksempel sammen med solceller, i tillegg til å ha mange andre bruksområder. Selv om disse batteriene allerede ... -
Silica from diatom frustules as anode material for Li-ion batteries
Norberg, Andreas Nicolai; Wagner, Nils Peter; Kaland, Henning; Vullum-Bruer, Fride; Svensson, Ann Mari (Journal article; Peer reviewed, 2019)In spite of its insulating nature, SiO2 may be utilized as active anode material for Li-ion batteries. Synthetic SiO2 will typically require sophisticated synthesis and/or activation procedures in order to obtain a ... -
Silicon nanowires grown-on-graphite as composite anodes for high-energy lithium ion batteries
Raaen, Martin (Master thesis, 2022)Silisium er et lovende anodematerial for fremtidige litium-ionbatterier med høy energitetthet, men det finnes utfordringer med lav elektrisk ledningsevne og store volumendringer av materialet under sykling. Silisium ... -
A Single-Pot Co-Precipitation Synthesis Route for Ni-Rich Layered Oxide Materials with High Cycling Stability
Pollen, Harald Norrud; Tolchard, Julian R; Svensson, Ann Mari; Wagner, Nils Peter (Peer reviewed; Journal article, 2022)In this work we report variations of LiNi0.88Mn0.06Co0.06O2 synthesised through a single-pot oxalic acid co-precipitation route, in which all cation precursors were added in the same step. The effects of Al-doping, ... -
Solid Electrolyte Interphase (SEI) Formation on the Graphite Anode in Electrolytes Containing the Anion Receptor Tris (hexafluoroisopropyl) borate (THFIPB)
Tezel, Ahmet Oguz; Daniel, Streich; Gueguen, Aurelie; Hahlin, Maria; Sunde, Svein; Edstrøm, Kristina; Novak, Petr; Svensson, Ann Mari (Peer reviewed; Journal article, 2020)Addition of small amounts of tris(hexafluoroisopropyl)borate (THFIPB) has previously been shown to improve the capacity of graphite anodes in a wide temperature window during long-term cycling in electrolytes based on LiPF6 ... -
Solvent-Controlled Charge Storage Mechanisms of Spinel Oxide Electrodes in Mg Organohaloaluminate Electrolytes
Wang, Lu; Wang, Zhaohui; Vullum, Per Erik; Selbach, Sverre Magnus; Svensson, Ann Mari; Vullum-Bruer, Fride (Journal article; Peer reviewed, 2017)Considering the improved safety, reduced cost, and high volumetric energy density associated with Mg batteries, this technology has distinct advantages for large-scale energy storage compared to other existing battery ... -
Spatial methods for characterising carbon anodes for aluminium production
Sommerseth, Camilla; Thorne, Rebecca Jayne; Rørvik, Stein; Sandnes, Espen; Ratvik, Arne Petter; Lossius, Lorentz Petter; Linga, Hogne; Svensson, Ann Mari (Journal article, 2015)Pilot test anodes were designed by Hydro Aluminium for laboratory studies using controlled blends of <2 mm aggregate from two single source cokes. Spa- tial and imaging methods were used to characterise anode surfaces with ... -
Sponge-like porous manganese(II,III) oxide as a highly efficient cathode material for rechargeable magnesium ion batteries
Wang, Lu; Asheim, Karina; Vullum, Per Erik; Svensson, Ann Mari; Vullum-Bruer, Fride (Journal article; Peer reviewed, 2016)Here, we are the first to report a spinel type Mn3O4 as cathode material for Mg-ion battery (MIB) with graphite foil (Gif) as current collector. High Coulombic efficiency and good cyclic stability of Mn3O4 are demonstrated, ... -
Stability of Conductive Carbon Additives for High-voltage Li-ion Battery Cathodes
Nilssen, Benedicte Eikeland (Master thesis, 2014)Conductive carbon additives are important constituents of the current state-of-the-art Li-ion battery cathodes, as the traditional active cathode materials are characterized by too low electronic conductivities. In ... -
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 ... -
Stabilizing strategies for the high‐voltage cathode material LiNi0.5‐xMn1.5+xO4 (LNMO)
Østli, Elise Ramleth (Doctoral theses at NTNU;2022:133, Doctoral thesis, 2022)In order to reduce the amount of greenhouse gasses and stop global warming, the transition to a renewable energy-based society needs to be accelerated. The production of energy-dense and high-performing batteries is a key ... -
Stabilizing the Cathode Interphase of LNMO using an Ionic-liquid based Electrolyte
Østli, Elise Ramleth; Mathew, Alma; Tolchard, Julian R; Brandell, Daniel; Svensson, Ann Mari; Selbach, Sverre Magnus; Wagner, Nils Peter (Peer reviewed; Journal article, 2023)The ionic liquid (IL)-based electrolyte comprising 1.2 M lithium bis(fluorosulfonyl)imide (LiFSI) in N-propyl-N-methylpyrrolidinium bis(fluorosulfonyl)imide (PYR13FSI) (ILE) has been evaluated as a suitable system for the ... -
Surface Treatment of Graphite for the Mitigation of Lithium Plating in Fast Charging Lithium-Ion Batteries
Bjønnes, Emilie (Master thesis, 2022)Grafittanoden har vært det foretrukne valget for bruk i litium-ionbatterier (LIB-er) siden de ble kommersialisert i 1991, på grunn av dens lave kostnad, råmaterialtilgjengelighet, relativt høye energi- og effekttetthet og ...