Browsing Institutt for materialteknologi by Subject "Nanoteknologi, Nanoteknologi for materialer, energi og miljø"
Now showing items 1-15 of 15
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A Method for Controlled Oxide and Carbon Coating of Silicon Nanoparticles as Anode in Lithium-Ion Batteries
(Master thesis, 2017)Silicon has emerged as a promising alternative to graphite in lithium-ion batteries. Silicon can, theoretically, provide up to ten times higher capacity due to its high alloying capabilities with lithium. This improvement ... -
Development of Hydrophobic Surfaces for Anti-Icing Applications
(Master thesis, 2015)Prevention of ice formation is an important yet dicult task for many industries operating under freezing conditions, such as aeronautics and the oil industry. Ice accumulation can severely limit the operational eciency, ... -
Development of Hydrophobic Surfaces for Anti-Icing Applications
(Master thesis, 2016)Icing is a problem for several industries, and current methods for removal of ice have several difficulties as they are time consuming, energy intensive and may be environmentally harmful. A better solution to the icing ... -
Development of Hydrophobic Surfaces for Anti-Icing Applications
(Master thesis, 2017)Ice accumulation on outdoor infrastructure is a major problem for many industries. Several strategies are commonly employed to remove ice, but they are often expensive or have negative environmental consequences. An ... -
The Effect of Thermal History on the Structural and Dielectric Properties of Tetragonal Tungsten Bronzes
(Master thesis, 2016)Tetragonal tungsten bronzes (TTB) are remarkable materials for their potential for chemical substitution and disorder. The niobates of this kind are usually ferroelectric, and they can comprise both ordered and disordered ... -
Exploring lithium ion batteries for wind powered water injection
(Master thesis, 2016)In this work, lithium ion batteries consisting of carbon-coated silica (\ce{SiO2}) anodes and various commercial cathodes were prepared, tested, and analysed for use in a novel wind-powered water injection system, designed ... -
Exploring Silica from Diatom Frustules as a High Performance, Low Cost and Environmentally Friendly Anode Material for Lithium Ion Batteries
(Master thesis, 2017)In this work, silica extracted from diatom frustules was explored as a potential high performance, low cost and environmentally friendly anode material for lithium ion batteries. The diatom frustules were washed and calcined, ... -
Finite temperature ab initio simulations of the lattice thermal conductivity of XNiBi, X=(Sc, Y, La), based half-Heuslers
(Master thesis, 2017)Over the past few years, the half-Heusler materials have attracted attention for their potential within thermoelectric applications. This is mainly due to the flexibility of half-Heusler crystal structure. The half-Heuslers ... -
First-Principles Calculations of Oxygen Vacancy Formation in Epitaxially Strained La1-xCaxMnO3
(Master thesis, 2016)Using epitaxial strain as a degree of freedom is a promising way to tailor the properties in thin films of transition metal oxides. Since the ground state of such materials tend to have many competing low-energy states ... -
Hydrothermal syntheis and characterization of BaTiO3 nanoparticles
(Master thesis, 2018)This thesis investigates the size dependent dipole disorder in ferroelectric materials, which leads to a loss of macroscopic ferroelectricity, and the role of the depolarization field on this disorder. Structural ... -
Investigation of bubble distribution and evolution in solar cell quartz crucibles
(Master thesis, 2017)Quartz crucibles are, among other applications, used to produce monocrystalline silicon ingots for the solar cell industry. The crucibles must be of high purity as any gas bubbles or impurities close to the crucible-melt ... -
On the Cycling Performance and Stability of Silicon-Based Anodes in Lithium-Ion Batteries - Revealing Challenges and Failure Mechanisms Using Post Mortem Analyses
(Master thesis, 2017)Li-ion batteries with improved energy density can be obtained by increasing the Si content in the graphite electrode, or replace it entirely with a Si based electrode. This may have the additional benefit of improving ... -
Optimizing carbon coating of silica from diatom frustules as a high performance, low cost and environmentally friendly anode material for lithium ion batteries
(Master thesis, 2018)The goal of this work was to optimize the carbon coating of silica from diatom frustules as a high performance, low cost and environmentally friendly anode material for lithium ion batteries. This was done by investigating ... -
The Effect of LiFSI Salt Concentration and Electrolyte Additives on the Performance of Silicon Anodes for Lithium-Ion Batteries
(Master thesis, 2018)Lithium-ion batteries (LIBs) are currently the dominant battery technology. However, the increasing technological demands in areas like energy storage, transportation and consumer electronics, require significant upgrades ... -
The Influence of Polarization on the Wetting of Anodes in the Hall-Héroult Process
(Master thesis, 2016)Improvements in the Hall Héroult process for aluminium electrolysis has lead to a reduction in energy consumption from 20-25 kWh/kg Al 70 years ago, down to around 13-14 kWh/kg Al on average today. In order to further ...