Browsing NTNU Open by Author "Harrington, David A."
Now showing items 1-11 of 11
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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 ... -
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 ... -
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 ... -
Mass-transport impedance at channel electrodes: Accurate and approximate solutions
Holm, Thomas; Ingdal, Mats; Fanavoll, Espen Vinge; Sunde, Svein; Seland, Frode; Harrington, David A. (Journal article; Peer reviewed, 2016)Accurate numerical electrochemical impedance spectra at channel electrodes are obtained using commercial finite element method software. These agree with experimental measurements on the hexaammineruthenium(II/III) reversible ... -
Method for studying high temperature aqueous electrochemical systems: Methanol and glycerol oxidation
Holm, Thomas; Dahlstrøm, Per Kristian; Burheim, Odne Stokke; Sunde, Svein; Harrington, David A.; Seland, Frode (Journal article; Peer reviewed, 2016)A method for high purity aqueous electrochemical experiments at temperatures above the normal boiling point of water and at temperatures up to 140 °C is described. A three-electrode cell in a self-pressurized glass autoclave ... -
Micro-fluidic flow cells for studies of electrochemical reactions
Ingdal, Mats (Master thesis, 2014)Micro fluidic flow cells (MFFCs) are a relatively new technique for characterization of electrochemical reactions. This work includes both techniques for manufacturing the cells and electrochemical characterization of ... -
Microfluidic and high temperaturetechniques for aqueous electrochemistry
Holm, Thomas (Doctoral thesis at NTNU;2016:196, Doctoral thesis, 2016)Liquid organic fuels are highly desired energy carriers as they have a high energy density, simple production, and can benefit directly from existing infrastructure. However, the electrochemical conversion efficiency is ... -
Microfluidic flow cells for studies of electrochemical reactions
Møinichen, Christine (Master thesis, 2012)In this project the main goal was to establish a routine for making a microfluidic flow cell (MFFC) using soft lithography methods, and test the flow cell with different electrolytes, sulphuric acid and a ruthenium red-ox ... -
Understanding reaction mechanisms using dynamic electrochemical impedance spectroscopy: Methanol oxidation on Pt
Holm, Thomas; Sunde, Svein; Seland, Frode; Harrington, David A. (Journal article; Peer reviewed, 2019)Data from a combined cyclic voltammetry and dynamic electrochemical impedance spectroscopy (dEIS) study of the methanol oxidation reaction (MOR) at high temperatures was revisited using a new method for mechanistic modeling. ... -
Understanding reaction mechanisms using dynamic electrochemical impedance spectroscopy: Methanol oxidation on Pt
Holm, Thomas; Sunde, Svein; Seland, Frode; Harrington, David A. (Journal article; Peer reviewed, 2019)Data from a combined cyclic voltammetry and dynamic electrochemical impedance spectroscopy (dEIS) study of the methanol oxidation reaction (MOR) at high temperatures was revisited using a new method for mechanistic modeling. ...