Blar i NTNU Open på forfatter "Sunde, Svein"
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Edge/basal/defect ratios in graphite and their influence on the thermal stability of lithium ion batteries
Foss, Carl Erik Lie; Svensson, Ann Mari; Sunde, Svein; Vullum-Bruer, Fride (Journal article, 2016)Raw graphite can be processed industrially in large quanta but for the graphite to be useful in lithium ion batteries (LIB's) certain parameters needs to be optimized. Some key parameters are graphite morphology, active ... -
Effect of a Boron Based Anion Receptor on Graphite and LiFePO4 Electrodes
Tezel, Ahmet Oguz; Sunde, Svein; Gomez-Camer, Juan Luis; Novak, Petr; Svensson, Ann Mari (Peer reviewed; Journal article, 2020)The effect of a boron based anion receptor, tris (hexafluoroisopropyle) borate (THFIPB), on the electrochemistry of graphite was investigated in 1 M LiPF6 in ethylene carbonate/dimethyl carbonate (EC/DMC, 1:1 by weight) ... -
Effect of alkaline ionomer on oxygen- reduction and evolution on electrodes
Angelsen, Sebastian Sakshaug (Master thesis, 2023)Det er et økende global initiativ for å forbedre utnyttelsen av fornybare energikilder, hvor vannelektrolyse fremstår som en lovende løsning for effektiv utnyttelse av overskudds fornybar energi ved å produsere grønt ... -
Effect of anion exchange ionomer content on electrode performance in AEM water electrolysis
Faid, Alaa; Xie, Lin; Barnett, Alejandro Oyarce; Seland, Frode; Kirk, Donald; Sunde, Svein (Journal article; Peer reviewed, 2020)Anion exchange membrane water electrolysis (AEMWE) has acquired substantial consideration as a cost-effective hydrogen production technology. The anion ionomer content in the catalyst layers during hydrogen and oxygen ... -
Effect of the Synthetic Method on the Properties of Ni-Based Hydrogen Oxidation Catalysts
Davydova, Elena S.; Manikandan, Maidhily; Dekel, Dario R.; Sunde, Svein (Journal article; Peer reviewed, 2021)The latest progress in alkaline anion-exchange membranes has led to the expectation that less costly catalysts than those of the platinum-group metals may be used in anion-exchange membrane fuel cell devices. In this work, ... -
Effect of thiophene-based π-spacers on N-arylphenothiazine dyes for dye-sensitized solar cells
Almenningen, David Moe; Hansen, Henrik Erring; Vold, Martin Furru; Buene, Audun Formo; Venkatraman, Vishwesh; Sunde, Svein; Hoff, Bård Helge; Gautun, Odd Reidar (Peer reviewed; Journal article, 2021)To study the effect of π-spacers on dye performance in DSSC, five novel phenothiazine dyes have been prepared where the number of successive thiophenes in the π-spacer was increased from zero to four. Additionally, a dye ... -
Electro-oxidation of ethanol at Pt electrodes with the use of a Dynamic Electrochemical Impedance Spectroscopy (DEIS) technique
Døssland, Line Teigen (Master thesis, 2012)Electro-oxidation of ethanol on smooth platinum surfaces was studied in thetemperature range 21C to 140C for 0.2 M ethanol in 0.5 M sulphuric acid.This was done by use of cyclic voltammetry and electrochemical impedances ... -
Electrocatalysts for medium temperature PEM water electrolysis
Zlotorowicz, Agnieszka (Doctoral Theses at NTNU, 1503-8181; 2013:190, Doctoral thesis, 2013)The main subject of this PhD thesis is the fabrication and investigation the electrochemical behavior of anode catalysts appropriate for medium- temperature proton exchange membrane (PEM) water electrolysis (WE) operating ... -
Electrochemical Behaviour of Industrial IrO2-Ta2O5 Anodes for Copper Electrowinning
Xu, Wenting; Haarberg, Geir Martin; Sunde, Svein; Seland, Frode; Ratvik, Arne Petter; Zimmerman, Erik; Åkre, Torjus (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 characterization of YMnO3 in alkaline solution - Identifying the characteristic voltammogram and developing the experimental procedure
Thorbjørnsen, Kristian Fredrik (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 impedance spectroscopy of a porous graphite electrode used for Li-ion batteries with EC/PC based electrolytes
Foss, Carl Erik Lie; Svensson, Ann Mari; Sunde, Svein; Vullum-Bruer, Fride (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 Quartz Crystal Microbalance Investigation of Manganese Oxide Deposition in Sulfuric Acid Relevant for Zinc Electrowinning
Skaftun, Siri Marie; Sunde, Svein; Haarberg, Geir Martin; Seland, Frode (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 reactions of Carboxylic Acids and product identification
Gulbrandsen, Ragnhild Helene (Master thesis, 2011)ABSTRACT -
Electrodeposition of zinc from acidic electrolyte
Rosenberg, Even Andersen (Master thesis, 2017)Industrial zinc electrowinning is carried out in an aqueous solution of zinc sulfate in sulfuric acid. The anodes are made of a lead-silver alloy and the cathodes are made of a relatively pure aluminium alloy. A common ... -
Electronic structure and growth of electrochemically formed iridium oxide films
Ilyukhina, Liudmila Igorevna; Sunde, Svein; Richard, Haverkamp (Journal article; Peer reviewed, 2017)The nature of the electronic structure of electrochemically formed iridium oxide films (EIROF) is investigated by in-situ conductivity measurements in an electrochemical cell and ex-situ current-sensing atomic force ... -
The Enhancing Effect of α–FeOOH on Ni Surfaces Toward Electrolytic Water Splitting
Heath, Megan M.; Poureshghi, Fatemeh; Seland, Frode; Sunde, Svein; Kriek, Roelof J. (Journal article; Peer reviewed, 2023)For decades Ni has been known as an electrocatalyst for the oxygen evolution reaction (OER); however, the crucial role that Fe plays in enhancing the electrocatalytic activity of Ni still requires deeper investigation and ... -
Exploring the influence of composition and morphology on the oxygen evolution reaction performance of Co-based catalysts
Poureshghi, Fatemeh; Seland, Frode; Jensen, Jens Oluf; Heath, Megan Muriel; Sunde, Svein (Peer reviewed; Journal article, 2023) -
Frequency controlled agglomeration of pt-nanoparticles in sonochemical synthesis
Hansen, Henrik Erring; Seland, Frode; Sunde, Svein; Burheim, Odne Stokke; Pollet, Bruno (Peer reviewed; Journal article, 2022)Optimizing the surface area of nanoparticles is key to achieving high catalytic activities for electrochemical energy conversion devices. In this work, the frequency range (200 kHz–500 kHz) for maximum sonochemical radical ... -
Generator-Sensor Impedance at Double Channel Electrodes
Holm, Thomas; Ingdal, Mats; Strobl, Jonathan R; Fanavoll, Espen Vinge; Sunde, Svein; Seland, Frode; Harrington, David A. (Journal article; Peer reviewed, 2017)A method for measuring downstream concentration effects through electrochemical impedance spectroscopy at double channel electrodes is demonstrated. An ac current perturbation is applied at an upstream working electrode ... -
Highly Active Nickel-Based Catalyst for Hydrogen Evolution in Anion Exchange Membrane Electrolysis
Faid, Alaa; Barnett, Alejandro; Seland, Frode; Sunde, Svein (Journal article; Peer reviewed, 2018)Anion exchange membrane (AEM) electrolysis is hampered by two main issues: stability and performance. Focusing on the latter, this work demonstrates a highly active NiMo cathode for hydrogen evolution in AEM electrolysis. ...