Blar i NTNU Open på forfatter "Sunde, Svein"
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A microfluidic electrochemical cell with integrated PdH reference electrode for high current experiments
Fanavoll, Espen Vinge; Harrington, David A.; Sunde, Svein; Singh, Gurvinder; Seland, Frode (Journal article; Peer reviewed, 2016)An on-chip thin-film palladium hydride reference electrode is described for use with microfluidic electrochemical cells. A Pd electrode fabricated by photolithographic methods is charged with hydrogen in-situ with a simple ... -
A semianalytical method for simulating mass transport at channel electrodes
Holm, Thomas; Sunde, Svein; Seland, Frode; Harrington, David A. (Journal article; Peer reviewed, 2015)A method for simulating electrode reactions in channel flow is developed and efficiently implemented in the symbolic algebra program Maple™. The steady-state convective diffusion equation for fully developed 2-D laminar ... -
Activity of carbon-encapsulated Ni<inf>12−x</inf>Fe<inf>x</inf>P<inf>5</inf> catalysts for the oxygen evolution reaction: Combination of high activity and stability
Poureshghi, Fatemeh; Seland, Frode; Jensen, Jens Oluf; Sunde, Svein (Peer reviewed; Journal article, 2022)Rational design of efficient, earth-abundant, and durable electrocatalysts to accelerate the oxygen evolution reaction (OER) is critical for hydrogen ion by water electrolysis. In the present work, nanostructured Ni12−xFexP5 ... -
An Investigation of HOR Activity in Alkaline Solution on Nickel Electrode
Strand, Sigrid (Master thesis, 2018)Å finne nye og bærekraftige energikilder er av stor betydning ettersom befolkning, teknologisk utvikling og forbruk øker. Brenselcelle (FC)-teknologi har blitt grundig undersøkt de siste tiårene, og regnes som en av ... -
Analysis of an Impedance Model for Porous Semiconductor Electrodes
Hansen, Johanna Etilde Marie (Master thesis, 2012)The main aim of this work was to analyze an impedance model for porous semiconductor electrodes consisting of spherical particles. The model should make it possible to analyze the flatband potential for this type of ... -
Anion Exchange Membrane Water Electrolysis from Catalyst Design to the Membrane Electrode Assembly
Faid, Alaa Yahia Abulgheit A.; Sunde, Svein (Peer reviewed; Journal article, 2022)Anion exchange membrane (AEM) electrolysis aims to combine the benefits of alkaline electrolysis, such as stability of the cheap catalyst and advantages of proton-exchange membrane systems, like the ability to operate at ... -
Assessment of the Recombination Resistance in Dye-Sensitized Solar Cells by Photoelectrochemical Techniques
Hansen, Henrik Erring (Master thesis, 2019)En fargestoffbasert solcelle utnytter et fargestoff med et passende båndgap til å eksitere elektroner inn i en halvleder med et høyt båndgap. Transporten av de positive ladningene foregår gjennom en elektrolytt. Denne måten ... -
Band gap alterations of graphitic carbon nitride for photoelectrochemical water splitting
Log, Kristina Dyrli (Master thesis, 2023)En viktig energibærer for framtiden er hydrogengass, hvor utviklingen av effektive grønne produksjonsmetoder er nødvendig for å minimere miljøpåvirkningen av global oppvarming. En slik metode er fotoelektrolyse av vann, ... -
Bimetallic Nano Electrocatalyst for HER in Alkaline Polymer Electrolysis
Faid, Alaa; Manikandan, Maidhily; Seland, Frode; Barnett, Alejandro; Sunde, Svein (Journal article; Peer reviewed, 2018)Ni and alloys of Ni (with Fe, Co, Mo) still represent the most suitable electrodes for HER in alkaline media. Bimetallic nanoparticles of NiFe and NiCo were fabricated by co-precipitation and thermal reduction by oleylamine. ... -
Calcination temperature dependent catalytic activity and stability of IrO2 – Ta2O5 anodes for oxygen evolution reaction in aqueous sulfate electrolytes
Xu, Wenting; Haarberg, Geir Martin; Sunde, Svein; Seland, Frode; Ratvik, Arne Petter; zimmerman, erik; Shimamune, T; Gustavsson, J; Åkre, Torjus (Journal article; Peer reviewed, 2017)In this work, commercial IrO2-Ta2O5 anodes with a certain composition calcined at three different temperatures were investigated. The results show that the calcination temperature has a significant influence on the ... -
Carbon-Supported Nanostructured Core-Shell Catalysts for Low Temperature Fuel Cells
Jensen, Mats (Master thesis, 2015)The direct methanol fuel cell needs a catalyst with low overpotential and high current density for methanol oxidation to be commerically viable. The catalyst with highest performance at the moment is the PtRu-alloy catalyst, ... -
Colloidal Synthesis of Ni-based Nanoparticles as Catalysts for Alkaline Water Electrolysis
Poureshghi, Fatemeh (Doctoral theses at NTNU;2021:146, Doctoral thesis, 2021) -
Comparison Between Microstructure Parameters and Electrochemical Performance of Ni-CGO Anodes in SOFC Subjected to Redox-Cycling
Svendby, Jørgen (Master thesis, 2011)The aim of this thesis was to create an understanding between the electrochemical performance of a porous Ni-CGO anode used in SOFC, and its microstructural parameters when subjected to redox-cycling. The anode samples ... -
Composition-Dependent Morphology, Structure, and Catalytical Performance of Nickel–Iron Layered Double Hydroxide as Highly-Efficient and Stable Anode Catalyst in Anion Exchange Membrane Water Electrolysis
Jiang, Wulyu; Faid, Alaa Yahia Abulgheit A.; Gomes, Bruna Ferreira; Galkina, Irina; Xia, Lu; Lobo, Carlos Manuel Silva; Desmau, Morgane; Borowski, Patrick; Hartmann, Heinrich; Maljusch, Artjom; Besmehn, Astrid; Roth, Christina; Sunde, Svein; Lehnert, Werner; Shviro, Meital (Peer reviewed; Journal article, 2022)Water splitting is an environmentally friendly strategy to produce hydrogen but is limited by the oxygen evolution reaction (OER). Therefore, there is an urgent need to develop highly efficient electrocatalysts. Here, NiFe ... -
Cost-effective electrodes for alkaline water electrolysis
Zamanizadeh, Hamid Reza (Doctoral theses at NTNU;2022:16, Doctoral thesis, 2022)Green hydrogen production using water electrolysis has potential to be the key component in storing and coupling renewable energy to the transportation and chemical sectors. Alkaline water electrolysis offers a relatively ... -
Current Distribution in Bipolar Cell Systems for the Chlor-alkali Industry
Iversen, Per Sverre (Master thesis, 2018)The chlor-alkali industry is one of Europe s largest chemical industries and produces chlorine gas, hydrogen gas and sodium hydroxide. One of the main production methods is to use membrane cells that are assembled into a ... -
Defect chemistry and ferroelectric domain walls in hexagonal manganites
Småbråten, Didrik René (Doctoral theses at NTNU;2018:263, Doctoral thesis, 2018)The hexagonal manganites h-RMnO3 (R=Y, In, Sc, Ho-Lu) have been studied the last two decades for their exotic and diverse functional properties. Their large chemical flexibility makes this material class an ideal chemical ... -
Dye-sensitized solar cells with zinc oxide electrodes - Improving the electrodeposition of ZnO and investigating the electrode lifetime.
Nyhaug, Mari (Master thesis, 2019)Fargestoff-solceller er et spennende område innen fornybar energi. Disse solcellene åpner nye anvendelsesområder sammenlignet med silisium-cellene som dominerer dagens marked. Fargestoff-solceller kan lages gjennomsiktige ... -
Dynamic electrochemical impedance study of methanol oxidation at Pt at elevated temperatures
Holm, Thomas; Dahlstrøm, Per Kristian; Sunde, Svein; Seland, Frode; Harrington, David A. (Journal article; Peer reviewed, 2019)The methanol oxidation reaction (MOR) is studied at temperatures up to 140 °C by a combination of cyclic voltammetry, chronoamperometry, and dynamic electrochemical impedance spectroscopy (dEIS). A mechanistic analysis of ... -
Dynamic Light Modulation in an Electrochromic Window consisting of Polyaniline, Tungsten Oxide and a Solid Polymer Electrolyte
Jelle, Bjørn Petter; Hagen, Georg K; Sunde, Svein; Ødegård, Rolf (Journal article; Peer reviewed, 1993)The electrochemical and optical properties of an electrochromic window consisting of the two complementary electrochromic materials, polyaniline (PANI) and tungsten oxide (WO3), have been investigated. Both PANI and WO3 ...