Browsing NTNU Open by Author "Pollen, Harald Norrud"
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Comparing the Performance of Different Silicon Powders for Use in Lithium-Ion Batteries
Pollen, Harald Norrud (Master thesis, 2018)The topic of this thesis is silicon anodes for lithium-ion batteries. The aim of this thesis is to compare three different types of silicon powders for use in lithium-ion batteries - a micron-sized powder (Silgrain e-Si ... -
Improved cyclability of Nickel-rich layered oxides
Wagner, Nils Peter; Tolchard, Julian R; Tron, Artur; Pollen, Harald Norrud; Gaertner, Heiko; Vullum, Per Erik (Peer reviewed; Journal article, 2020)This study compares the physico- and electro- chemical properties of LiNi0.8Mn0.10Co0.1O2 (NMC811) and LiNi0.83Mn0.06Co0.09Al0.1O2 (NMCA) prepared by an oxalic acid co-precipitation. Deposition of a SiO2 surface coating ... -
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, ... -
Synthesis and Structural Stability Investigations of Mg and Nb Modified Ultra-High Ni Layered Oxides for Li-ion Batteries
Andersen, Siri (Master thesis, 2022)Nikkel-rike lagbygde oksider har blitt bevist å kunne oppnå veldig høy kapasitet noe som har ført til stor interesse for dem i industrien. En negativ egenskap ved disse materialene er derimot den strukturelle ustabiliteten ...