Browsing Institutt for materialteknologi by Subject "VDP::Teknologi: 500::Materialteknologi: 520"
Now showing items 21-40 of 41
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In situ Characterization of Ferroelectric Oxide Thin Films during Aqueous Chemical Solution Deposition
(Doctoral theses at NTNU;2020:144, Doctoral thesis, 2020)Ferroelectric materials are used in a wide range of applications, including capacitors and non-linear optical devices. Utilization of ferroelectric thin films is especially desirable due to the possibility to tailor the ... -
In situ exsolution synthesis of composite cathodes for protonic ceramic fuel cells
(Doctoral theses at NTNU;2018:127, Doctoral thesis, 2018)Protonic ceramic fuel cells (PCFCs) have the potential to operate with hydrogen as a fuel in an environmentally friendly manner with no emissions and high electrical efficiency. The lower operation temperature of PCFCs due ... -
Ir based catalysts for PEM water electrolysis prepared via galvanic displacement
(Doctoral theses at NTNU;2021:187, Doctoral thesis, 2021)In the transition away from non-renewable energy sources, the use of fluctuating power sources such as wind and solar are increasing. This creates a need for temporary storage of excess energy when production exceeds demand. ... -
Lithium dendrites in solid-state batteries - Where they come from and how to mitigate them
(Doctoral theses at NTNU;2023:382, Doctoral thesis, 2023)A major contributor to global CO2 emissions is transportation and a transition to electric vehicles could lead to a significant reduction of those emissions. A roadblock in this transition are safety issues of electric ... -
Magnetic and Stimuli-Responsive Nanoparticles for Environmental and Biomedical Applications
(Doctoral theses at NTNU;2021:362, Doctoral thesis, 2021)For the past few decades, nanomaterials have been an integral part of research involving applications in various industries, ranging from pharmaceuticals, electronics, energy, chemical, food, aviation, etc, owing to their ... -
Methods of Oxidation Inhibition for Al-Mg Alloys
(Doctoral theses at NTNU;2019:29, Doctoral thesis, 2019)The oxidation of aluminum will occur at any notable oxygen partial pressure. This oxidation can be favorable as it forms a protective layer on the metal surface which prevents further oxidation. However, the addition of a ... -
Nanoscale Chemical Analysis of Ferroic Materials and Phenomena
(Doctoral theses at NTNU;2023:397, Doctoral thesis, 2023)The discovery of new physical phenomena in materials is closely linked to the progress in characterization and is propelled by the ability to observe and study physical processes occurring at the atomic level. Newly ... -
Novel Coatings with low adhesion to ice
(Doctoral theses at NTNU;2022:70, Doctoral thesis, 2022)Atmospheric icing can be a nuisance during the winter season in the Northern hemisphere, both in everyday life and for critical infrastructure. The strong adhesive forces between ice and organic coatings typically employed ... -
Nucleation and growth of multicrystalline silicon
(Doctoral theses at NTNU;2018:42, Doctoral thesis, 2018)This work has focused on the nucleation process of multicrystalline silicon (mc-Si) for photovoltaic (PV) applications during solidification in α-Si3N4 coated crucibles, the typical crucible coating used commercially. ... -
Oxygen absorption in hexagonal manganites
(Doctoral theses at NTNU;2023:192, Doctoral thesis, 2023)Oxygen is one of the worlds most used chemicals, with over 100 million tons of pure O2 being used for industrial and medical purposes each year. The demand for O2 is high, and expected to rise even further due to its ... -
PAH emissions from the metallurgical industry
(Doctoral theses at NTNU;2023:269, Doctoral thesis, 2023)Polycyclic aromatic hydrocarbons (PAHs) are a large group of organic molecules consisting of two or more fused aromatic rings. They can be created by incomplete combustion of organic materials and accumulate in nature. As ... -
Reduction Rates of SiMn Slags from Various Raw Materials
(Doctoral theses at NTNU;2018:260, Doctoral thesis, 2018) -
Reduction Rates of SiMn Slags from Various Raw Materials
(Doctoral theses at NTNU;2018:260, Doctoral thesis, 2018)The kinetic information in the SiMn (Silicomanganese) process from melting of raw materials to production of metal was investigated in this work. This is of interest for the SiMn production industries where the effect of ... -
Screw Extrusion of Light Metals: Development of materials, characterization and process analysis
(Doctoral theses at NTNU;2018:218, Doctoral thesis, 2018)The presented work highlights the possibilities inherent in a new method for continuous extrusion, i.e. hereafter named metal continuous screw extrusion (MCSE). This was done by expanding the knowledge of the process itself, ... -
Si-based phase change materials in thermal energy storage systems
(Doctoral theses at NTNU;2020:137, Doctoral thesis, 2020)The main aim of this dissertation is to develop new phase change materials (PCMs) for high temperature energy storage in thermal energy storage (TES) devices, with special focus on Si-based PCMs due to silicon’s the high ... -
Stabilizing strategies for the high‐voltage cathode material LiNi0.5‐xMn1.5+xO4 (LNMO)
(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 ... -
A study on multilayered MXenes for rechargeable battery electrodes through surface termination control
(Doctoral theses at NTNU;2023:19, Doctoral thesis, 2023)In the transition from fossil fuels to renewable energy sources, the demand for rechargeable batteries is rapidly increasing. To meet this demand, a diversification of battery chemistries will be essential, due to limited ... -
Synthesis and Reduction-Carburization of (Fe,Mg)(Cr,Al)2O4 Composite Spinel Solid Solution With CH4
(Doctoral theses at NTNU;2018:193, Doctoral thesis, 2018) -
Synthesis of Mg2Si and its use for Silane production
(Doctoral theses at NTNU;2023:291, Doctoral thesis, 2023)The increase in the use of renewable energy sources is crucial to address global warming and its impact on our planet. Solar energy is predicted to experience the most rapid growth of the different sources of renewable ... -
Synthetic Strategies Towards 4,6-Disubstituted Pyrrolopyrimidines and Evaluation of their Potential as Colony Stimulating Factor 1 Receptor Kinase Inhibitors
(Doctoral theses at NTNU;2024:60, Doctoral thesis, 2024)Due to their central role in regulating vital cellular processes, protein kinases are increasingly attractive targets in modern drug development. Small molecule drugs have become valuable tools for selectively modulating ...