Browsing NTNU Open by Author "Seland, Frode"
Now showing items 21-40 of 101
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Electrochemical detection of silver ions in nickel chloride based process solutions
Josefsen, Benjamin Colin Sørli (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 Oxidation of Methanol and Formic Acid in Fuel Cell Processes
Seland, Frode (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 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 ... -
Electrodialytic Energy Storage System: Permselectivity, Stack Measurements and Life-Cycle Analysis
Krakhella, Kjersti Wergeland; Morales, Marjorie; Bock, Robert; Seland, Frode; Burheim, Odne Stokke; Einarsrud, Kristian Etienne (Peer reviewed; Journal article, 2020)Reverse electrodialysis and electrodialysis can be combined into a closed energy storage system, allowing for storing surplus energy through a salinity difference between two solutions. A closed system benefits from simple ... -
Electrolytic Removal of Chloride from Acidic Nitrate Solutions
Sandland, Maiken (Master thesis, 2014)Chloride containing ores are among other things often used as the raw material in metal electrowinning from aqueous solutions. The dissolution of this ore may cause problems as chlorine gas will be evolved either as a side ... -
Electroplating of Stainless Steel in Aqueous Alkaline Solution
Thu, Ida Soland (Master thesis, 2017)Electroplated stainless steel alloys containing elements such as iron, chromium and nickel, are of great interest in production of electronics and nanotechnology devices. Previous methods for electroplating of these alloys ... -
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 ... -
Enhancing the Oxygen Evolution Reaction Activity of Sputtered Ni, NiO, and NiNiO Thin Films by Incorporating Fe
Heath, Megan Muriel; Potgieter, Marcelle; Seland, Frode; Sunde, Svein; Kriek, Roelof Jacobus (Journal article; Peer reviewed, 2024)The effect of Fe-containing alkaline electrolyte, on the oxygen evolution reaction (OER) activity of Ni electrocatalysts, has long been of interest as Fe increases the OER activity of Ni electrocatalysts. However, controversy ... -
Examination of Near-Surface pH Changes during Nickel Electrodeposition in Glycine-Buffered Electrolytes
Moneta-Bosoni, Gard Kristian J. (Master thesis, 2024)En detaljert forståelse av pH-endringene nær beleggingsområdet under elektroplettering er essensielt for utviklingen av bedre og mer effektive teknikker for plettering av metaller. Dette er spesielt relevant for løsninger ... -
Experimental Study of Thermal Conductivity and Compression Measurements of the GDL-MPL Interfacial Composite Region
Bock, Robert; Shum, Andrew; Khoza, Thulile; Seland, Frode; Hussain, Nabeel; Zenyuk, Iryna V.; Burheim, Odne Stokke (Journal article, 2016)MPL and GDL in a PEM fuel cell assembly are often treated as separate layers in the literature. However, there exists a considerable interfacial region where the two different materials merge. The MPL consists of fine ... -
Exploring novel synthesis routes for Y2Ru2O7
Closs, Elise Fosdal (Master thesis, 2024)Yttrium rutenium pyroklor har blitt foreslått som en erstatning for den skjeldne og dyre elektrokatalysatoren iridiumoksid i PEM vannelektrolysatorer. På grunn av den høye syntesetemperaturen og tiden, dannes det imidlertid ... -
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 ... -
Heat Sources, Thermal Conductivity and Heat Distribution in Electrochemical Energy Storage Technologies
Bock, Robert (Doctoral theses at NTNU;2018:408, Doctoral thesis, 2018)The work presented in this thesis is based on taking thermal conductivity measurements of a range of materials used in three different electrochemical energy storage technologies. Specifically, two hydrogen technologies, ... -
Heat to H2: Using Waste Heat for Hydrogen Production through Reverse Electrodialysis
Krakhella, Kjersti Wergeland; Einarsrud, Kristian Etienne; Burheim, Odne Stokke; Seland, Frode; Bock, Robert (Journal article; Peer reviewed, 2019)This work presents an integrated hydrogen production system using reverse electrodialysis (RED) and waste heat, termed Heat to H2. The driving potential in RED is a concentration difference over alternating anion and cation ... -
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. ... -
Improved catalytic activity of mixed platinum catalysts supported on various carbon nanomaterials
Zhang, Jie; Tang, Shuihua; Liao, L; Yu, W; Li, J; Seland, Frode; Haarberg, Geir Martin (Journal article; Peer reviewed, 2014)Electrocatalyst support affects not only catalytic activity of a catalyst, but also mass transportation and electron transfer in the catalyst layers of an electrode for proton exchange membrane fuel cells. Multi-dimensional ...