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Electrochemical Co-Deposition of Alloying Elements during Aluminium Electrolysis in a Laboratory Cell
(Doctoral theses at NTNU;2021:121, Doctoral thesis, 2021)Aluminium alloys are mainly produced by the so-called melt mixing at which an alloying element is added to the molten aluminium before casting. This approach suffers from several drawbacks such as the high requirements of ... -
Electrochemical contrast switching between black and white appearance of gelatin-covered zinc
(Peer reviewed; Journal article, 2020)Zinc and its alloys are widely used in the surface protection of metallic structural materials. Thus, zinc is an interesting and relevant candidate material for preparing stimuli-responsive surfaces. In this work, the ... -
Electrochemical detection of silver ions in nickel chloride based process solutions
(Master thesis, 2022)Sølvioner er tilstede som urenheter i elektrolytten som brukes til elektrolyse av nikkel. En metode for å overvåke sølvkonsentrasjonen i prosessløsning er nødvendig for å sikre at sølvioner er fjernet i tilstrekkelig grad ... -
Electrochemical enhancement and inhibition of calcium carbonate deposition
(Peer reviewed; Journal article, 2020)Calcium carbonate is by far the most widespread scaling material. Its deposition in pipes and flowlines has been a long-standing problem for many industries. Hence, a lot of research is devoted to scale inhibition. One of ... -
Electrochemical formation of nanostructures in cryolitic melts
(Doktoravhandlinger ved NTNU, 1503-8181; 2008:242, Doctoral thesis, 2008) -
Electrochemical impedance spectroscopy of a porous graphite electrode used for Li-ion batteries with EC/PC based electrolytes
(Journal article; Peer reviewed, 2012)Electrochemical impedance spectroscopy has been employed to investigate different electrolyte compositions used for lithium-ion batteries. Diffusion coefficients in ethylene carbonate (EC) was estimated to be in order of ... -
Electrochemical Oxidation of Methanol and Formic Acid in Fuel Cell Processes
(Doktoravhandlinger ved NTNU, 1503-8181; 2005:204, Doctoral thesis, 2005)The main objectives of the thesis work were: (1), to study the oxidation of methanol and formic acid on platinum electrodes by employing conventional and advanced electrochemical methods, and (2), to develop membrane ... -
Electrochemical Passivation and Texturing of Silicon Wafers in Alkaline Solutions
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:339, Doctoral thesis, 2012)Texturing of silicon wafers is an important process step in fabrication of solar cells in order to reduce the reflection of incoming light radiation on the solar cell surfaces. The conventional wet chemical etching methods ... -
Electrochemical processes in the AlCl3-urea ionic liquid analogue
(Master thesis, 2019)Hvert år produseres det nesten 70 millioner tonn aluminium på verdensbasis som blir anvendt i ulike industrier, blant annet transport-, elektronikk- og emballasjeindustrien. Materialet er høyt etterspurt grunnet sine ... -
Electrochemical Production of Al-Si Alloys in Cryolitic Melts in a Laboratory Cell
(Peer reviewed; Journal article, 2021)Direct production of aluminium-silicon alloy during aluminium electrolysis in fluoride-based melts was studied. Experiments were carried out in a laboratory cell dedicated to current efficiency measurements. Electrolysis ... -
Electrochemical production of Al–Mn alloys during the electrodeposition of aluminium in a laboratory cell
(Peer reviewed; Journal article, 2021)This study reports the direct production of an aluminium–manganese alloy during aluminium electrolysis in fluoride-based melts. Experiments were conducted in a laboratory cell dedicated for current efficiency measurements. ... -
Electrochemical production of titanium by using titanium oxycarbide anodes in molten salts
(Doktoravhandlinger ved NTNU, 1503-8181; 2010:148, Doctoral thesis, 2010)New production routes for the production of titanium are strongly desired to reduce the costs and thereby increase the utilisation of titanium. In the present work the possibility to directly reduce and purify titanium ... -
Electrochemical properties of phosphorus compounds in fluoride melts
(Doktoravhandlinger ved NTNU, 1503-8181; 2003:52, Doctoral thesis, 2003)In the present work the behaviour of phosphorus species in fluoride-based melts was investigated. The motivation for the study was based on the deleterious effect of phosphorus on the aluminium production process. It is ... -
Electrochemical Quartz Crystal Microbalance Investigation of Manganese Oxide Deposition in Sulfuric Acid Relevant for Zinc Electrowinning
(Journal article, 2018)The deposition and dissolution of manganese oxide from a sulfuric acid solution were investigated by conventional electrochemical techniques and EQCM on gold and platinum electrodes. The product of the oxidation was found ... -
Electrochemical Reactivity and Wetting Properties of Anodes Made from Anisotropic and Isotropic Cokes
(Journal article, 2016)High quality anodes require stable raw materials. As the quality of the coke available for production of anodes is changing, future production will rely on cokes that are more isotropic with higher impurity levels than ... -
Electrochemical Reduction of Indium and Tin Oxides from Molten Salts
(Doctoral thesis at NTNU;2015:187, Doctoral thesis, 2015)Indium is considered to be a rare element. The largest end use for indium is ITO powder. ITO is indium oxide combined with 10 percent tin oxide and this represent approximately 72 percent of the indium market. ITO can ... -
Electrochemical Reduction of Iron Oxides in Aqueous NaOH Electrolyte Including Iron Residue from Nickel and Zinc Electrowinning Processes
(Journal article, 2022)Experiments were carried out in NaOH-H2O (50–50 wt%) electrolyte with a suspension of Fe2O3 particles at ~100 ℃. A rotating disk electrode of graphite or silver was used as the cathode. The current efficiency for iron ... -
Electrochemical studies and phase-structural characterization of a high-capacity La-doped AB(2) Laves type alloy and its hydride
(Journal article; Peer reviewed, 2019)This work was focused on studies of structural and electrochemical properties of the La-doped AB2-type Zr/Ti-based metal hydride anode alloys. The Ti0.2Zr0.8La0-0.05Ni1.2Mn0.7V0.12Fe0.12 alloys were characterized using ... -
Electrochemical Study of Aluminum Chloride in Basic Chloride Melts with Oxide Additions
(Master thesis, 2020)Hall-Héroult prosessen har dominert fremstillingen av aluminium i over et århundre. Flere alternative prosesser har blitt foreslått, hvorav “Alcoa Smelting Process” som ble utviklet på 70-tallet anses for å være den eneste ... -
Electrode behaviors of Na-Zn liquid metal battery
(Journal article; Peer reviewed, 2017)The electroreduction processes on a Mo electrode in a Na-Zn liquid metal battery cell with a molten NaCl-CaCl2-ZnCl2 electrolyte were investigated at 565°C. The effect of the battery operating parameters on the loss rate ...