Browsing Institutt for materialteknologi by Title
Now showing items 1596-1615 of 2563
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New low temperature aluminium production process
(Master thesis, 2019)Aluminiumsproduksjon i dag er både dyrt og tidkrevende, med flere høyenergikrevende steg på veien. Bauxitt må først graves ut, for så å bli raffinert til Al2O3. For å redusere Al2O3 til ren aluminium kreves temperaturer ... -
New Materials for Mg-ion batteries - Mn3O4 as cathode
(Master thesis, 2016)Due to drawbacks with the lithium ion battery technology, magnesium ion batteries are being researched as an alternative replacement system. An optimal combination of component materials has however not been discovered ... -
New Methods to Determine PAH Emission Dynamics During Electrode Mass Processing
(Peer reviewed; Journal article, 2023)New measurement techniques aiming to achieve a better understanding of the PAH emissions dynamics during production of electrode paste briquettes were tested. Traditional sampling method requires several hours of sampling ... -
Ni-Co and Ni-Fe Catalysts for The Oxygen Evolution Reaction in Alkaline Water Electrolysis
(Master thesis, 2022)Nickel-based catalysts were chosen for alkaline electrolysis of water due to their higher corrosion resistance and activity in alkaline environments. Alkaline membrane water electrolysis tries to combine the low cost of ... -
Ni/NiO nanosheets for alkaline hydrogen evolution reaction: In situ electrochemical-Raman study
(Journal article; Peer reviewed, 2020)Nickel/Nickel oxide (Ni/NiO) nanosheets heterostructure is a cheap and active catalyst for hydrogen evolution reaction (HER) in alkaline electrolytes. However, the reason for this activity is still under debate. Herein ... -
Nickel based-catalysts for anion exchange membrane water electrolysis: Electrochemical measurements, Raman spectroscopy, and electrolyzer performance
(Doctoral theses at NTNU;2020:269, Doctoral thesis, 2020)Hydrogen is an energy carrier, feedstock, industrial process gas, and alternative transportation fuel. Low-temperature water electrolysis, the splitting of water into its constituent gases hydrogen and oxygen by the means ... -
NiCu mixed metal oxide catalyst for alkaline hydrogen evolution in anion exchange membrane water electrolysis
(Peer reviewed; Journal article, 2021)We report on the optimization of nickel-copper catalysts for superior performance as a cathode catalyst in anion exchange membrane (AEM) water electrolysis. The bifunctional system of NiCu mixed metal oxide (MMO) nanosheets ... -
NiFeB anode catalyst for anion exchange membrane water electrolysis
(Peer reviewed; Journal article, 2022)In this work, the Ni2Fe1B oxygen evolution reaction (OER) catalyst was scaled up to 5 g per batch and tested as an anode electrode in anion exchange membrane electrolysis. The Ni2Fe1B membrane electrode assemblies (MEAs) ... -
Non-steady 3D dendrite tip growth under diffusive and weakly convective conditions.
(Journal article; Peer reviewed, 2019)Three dimensional α-Al dendrite tip growth under varying solute gradients in an Al-Cu-Si alloy melt has been studied using real time synchrotron X-ray imaging and mathematical modelling. X-radiographic image sequences with ... -
Non-transferred arc hydrogen plasma torch simulations in OpenFOAM
(Master thesis, 2022)Dette prosjektet utførte en litteratur studie og numeriske simuleringsforsøk på termisk hydrogen plasma. Hovedmålet var å modellere hydrogen plasma i en ikke-overført lysbue plasma fakkel. Hovedmotivasjonen bak er å gå fra ... -
Nonlinear mechanical behaviour of Ba0.5Sr0.5Co0.8Fe0.2O3 − δ and in situ stress dependent synchrotron X-ray diffraction study
(Journal article; Peer reviewed, 2017)Perovskite type Ba0.5Sr0.5Co0.8Fe0.2O3 − δ ceramics display nonlinear stress-strain behaviour upon uniaxial compression at room temperature. Step functional loading experiments show that the nonlinear strain response of ... -
A novel approach for the evaluation of ice release performance of coatings using static friction measurements
(Peer reviewed; Journal article, 2020)Atmospheric icing on structures and equipment represents a challenge for operation and safety. Passive ice removal by ice-phobic coatings has received much attention over the last decades. The current state-of-the-art ... -
Novel carbon coating on aluminum current collectors for lithium-ion batteries
(Peer reviewed; Journal article, 2022)In this work a significant improvement of the performance of LiFePO4 (LFP) composite cathodes, in particular at high rates (up to 12C), is demonstrated by the use of carbon-coated aluminum current collectors. The coating ... -
Novel coatings for graphite materials in PV silicon applications: A study of the surface wettability and interface interactions
(Peer reviewed; Journal article, 2021)Coatings are one of the promising techniques that can be applied to modify the surface properties and tailor the surface interactions with the surrounding. The development of conformable coatings for graphite materials can ... -
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 ... -
Novel combinatory method for surface and crystallinity analysis of crystalline materials
(Journal article; Peer reviewed, 2023) -
Novel process of coating Al on graphene involving organic aluminum accompanying microstructure evolution
(Journal article; Peer reviewed, 2018)A novel chemical reduction of organic aluminum for coating Al on the graphene surface is proposed. During the process, Al powder reacted with the (C2H5)2Br solution to produce (C2H5)3Al solution, followed by gradual ... -
Novel synthesis method of BaTiO3-nanoparticles - Synthesis of BaTiO3-nanoparticles by spray-pyrolysis of TiO2-nanoparticles dispersed in Ba(NO3)2-solution
(Master thesis, 2016)Ferroelectric materials are widely used in different technological applications. Lead zirconate titanate (PZT) materials are currently the most used, due to their excellent piezoelectric properties and relatively high ... -
Novel technique to study the wet chemical etching response of multi-crystalline silicon wafers
(Peer reviewed; Journal article, 2022)This study is based on the application of a combinatory method for surface and crystallinity analysis of crystalline materials. The obtained results illustrated the effects of different additives (isopropyl alcohol (IPA) ... -
Novel Topological Spin Solitons for Spintronics Applications
(Doctoral theses at NTNU;2021:227, Doctoral thesis, 2021)Topologically non-trivial spin solitons, such as skyrmions and magnetic edge dislocations, are particle-like nanoscale configurations in the magnetization field. In solid state systems, they can be written, moved, and ...