Browsing NTNU Open by Title
Now showing items 27488-27507 of 100646
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Electrochemical and photoelectrochemical characterization of porous semiconducting electrodes
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:262, Doctoral thesis, 2013)CaNb2O6 particles with crystallite sizes from 24 to 64 nm have been produced by solgel synthesis. The flatband potential was by impedance measurements determined to be around -0.4 V vs. NHE for a bulk sample, which is in ... -
Electrochemical Behavior of Tin in Molten LiCl-KCl at 450 ℃
(Journal article; Peer reviewed, 2019)The electrochemical behavior of tin was studied with cyclic voltammetry at glassy carbon electrodes in the fused LiCl-KCl at 450 ℃. Metallic tin deposition on the glassy carbon electrode occurs at a potential of around ... -
Electrochemical Behaviour of Carbon Anodes Produced with Different Mixing Temperatures and Baking Levels—A Laboratory Study
(Chapter, 2019)Anodes fabricated from a single source coke were used for investigations of effect of porosity and surface roughness on the electrochemical performance in laboratory scale cells. In order to fabricate anodes differing in ... -
Electrochemical behaviour of dissolved iron chloride in KCl+LiCl+NaCl melt at 550 ºC
(Journal article, 2014)An electrochemical study of iron was carried out in KCl+LiCl+NaCl melt at 550ºC using a glassy carbon working electrode. Cyclic voltammetry showed that the Fe(II)/Fe(0) electron exchange is a soluble/insoluble reversible ... -
Electrochemical behaviour of dissolved titanium oxides during aluminium deposition from molten fluoride electrolytes
(Journal article, 2017)A small but significant amount of dissolved titanium is always present in the molten cryolite based electrolyte used during electrowinning of aluminium. The fact that titanium can appear in several oxidation states may be ... -
Electrochemical Behaviour of Industrial IrO2-Ta2O5 Anodes for Copper Electrowinning
(Journal article; Peer reviewed, 2017)In this work, industrial IrO2-Ta2O5 anodes calcined at different temperatures were investigated. The results show that the calcination temperature has significant influence on the surface microstructure including the ... -
Electrochemical behaviour of Mn-containing Al-alloys after different heat treatment
(Master thesis, 2022)Aluminium brukes ofte i varmevekslere i biler på grunn av lav vekt og god varmeledningsevne. Når varmevekslerne monteres blir de ulike delene loddet sammen. Varme fra denne loddeprosessen aktiverer metallet for anodiske ... -
Electrochemical behaviour of sulphur containing species in molten salts
(Doktoravhandlinger ved NTNU, 1503-8181; 2007:254, Doctoral thesis, 2007)The behaviour of sulphur containing species has been investigated during the last few decades in various molten chloride and fluoride electrolytes but their effect on the performance of the cells producing aluminium still ... -
Electrochemical Characterisation of Carbon-Supported Ru@Pt Core-Shell Catalyst for the Direct-Methanol Fuel Cell
(Doctoral thesis at NTNU;2016:173, Doctoral thesis, 2016)The world is in an energy transition period, going from predominantly fossil fuel energy sources to more renewable sources. This is especially happening in the transportation sector, where oil is the dominant source. ... -
Electrochemical Characterization of Melt Spun AB5 Type Alloys for Metal Hydride Batteries
(Dr. ingeniøravhandling, 0809-103X; 2003:45, Doctoral thesis, 2003)This thesis is part of a larger research project where two metal hydride forming AB5 type alloys have been investigated. A slightly non-stoichiometric alloy with mischmetal on A-site and nickel, cobalt, manganese and ... -
Electrochemical characterization of YMnO3 in alkaline solution - Identifying the characteristic voltammogram and developing the experimental procedure
(Master thesis, 2016)Electrochemical intercalation of oxygen into oxide structures has been studied ever since it was first observed in 1990. A recent paper investigated using electrochemical intercalation of oxygen into vacancies in LaMnO3 ... -
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 Corrosion Resistance of Mg Alloy ZK60 in Different Planes with Respect to Extrusion Direction
(Peer reviewed; Journal article, 2022)The electrochemical corrosion resistance of a Mg-Zn-Zr alloy, ZK60, in different planes with respect to the extrusion direction was investigated in 3.5 wt% NaCl. The motivation of this study lies in the influence of extrusion ... -
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 Energy Storage for an HVDC transmission system connected to an offshore wind farm
(Bachelor thesis, 2022)Formålet med denne oppgaven, skrevet for Equinor, er å gjennomgå og vurdere løsninger for elektrokjemisk energilagring for et HVDC transmisjonssystem tilkoblet en offshore havvindpark. Både med hensyn på å velge teknologi ... -
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 for Organic Coating Assessment
(Master thesis, 2022)Elektrokjemisk impedans spektroskopi (EIS) er en elektrokjemisk metode som har blitt brukt i flere tiår i forskning på maling. Malingsindustrien viser økt interesse for metoden, og den blir stadig tatt mer i bruk. Hensikten ... -
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 ...