Browsing NTNU Open by Author "Barnett, Alejandro Oyarce"
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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 ... -
En effektiv energimerkeordning
Domaas, Ailda Johanne; Markhus, Silje Stavnås (Bachelor thesis, 2020)Enova la i 2019 ut et forprosjekt der det ble presentert et forslag til videreutvikling av energimerkeordningen. Dette forprosjektet ble lagt ut for høring og har svarfrist i mai 2020. Denne oppgaven ser på hvilke endringer ... -
Grønn hydrogenproduksjon i det nedlagte vannkraftverket Nedre Fiskumfoss - en tekno-økonomisk analyse
Bergem, Lars Høyem; Eie, Katrine Gylseth; Hagemeister, Frieda (Bachelor thesis, 2022)Nedre Fiskumfoss kraftverk skal erstattes av et nytt kraftverk og i den sammenheng har NTE besluttet å undersøke hvorvidt det er mulig å produsere grønn hydrogen ved elektrolyse i det gjenstående bygget som en del av deres ... -
Ionomer content optimization in nickel-iron-based anodes with and without ceria for anion exchange membrane water electrolysis
Cossar, Emily; Barnett, Alejandro Oyarce; Seland, Frode; Safari, Reza; Botton, Gianluigi A.; Baranova, Elena A. (Journal article; Peer reviewed, 2021)Hydrogen production from anion exchange membrane water electrolysis (AEMWE) is an efficient cost-effective solution to renewable energy storage. Contrary to proton exchange membrane (PEM) electrolysis, AEMWE requires further ... -
Ni/NiO nanosheets for alkaline hydrogen evolution reaction: In situ electrochemical-Raman study
Faid, Alaa; Barnett, Alejandro Oyarce; Seland, Frode; Sunde, Svein (Journal article; Peer reviewed, 2020)Nickel/Nickel oxide (Ni/NiO) nanosheets heterostructure is a cheap and active catalyst for hydrogen evolution reaction (HER) in alkaline electrolytes. However, the reason for this activity is still under debate. Herein ... -
Nickel based-catalysts for anion exchange membrane water electrolysis: Electrochemical measurements, Raman spectroscopy, and electrolyzer performance
Faid, Alaa Yahia Abulgheit Abdulmutallab (Doctoral theses at NTNU;2020:269, Doctoral thesis, 2020)Hydrogen is an energy carrier, feedstock, industrial process gas, and alternative transportation fuel. Low-temperature water electrolysis, the splitting of water into its constituent gases hydrogen and oxygen by the means ... -
NiCu mixed metal oxide catalyst for alkaline hydrogen evolution in anion exchange membrane water electrolysis
Faid, Alaa; Barnett, Alejandro Oyarce; Seland, Frode; Sunde, Svein (Peer reviewed; Journal article, 2021)We report on the optimization of nickel-copper catalysts for superior performance as a cathode catalyst in anion exchange membrane (AEM) water electrolysis. The bifunctional system of NiCu mixed metal oxide (MMO) nanosheets ... -
Online measurements of fluoride ions in proton exchange membrane water electrolysis through ion chromatography
Marocco, Paolo; Sundseth, Kyrre; Aarhaug, Thor Anders; Lanzini, Andrea; Santarelli, Massimo; Barnett, Alejandro Oyarce; Thomassen, Magnus (Peer reviewed; Journal article, 2021)This work investigates the online monitoring of fluoride ion concentration in proton exchange membrane water electrolysers (PEMWE) effluent water using an automated ion chromatography (IC) setup. Prototype catalyst coated ... -
Optimized Nickel-Cobalt and Nickel-Iron Oxide Catalysts for the Hydrogen Evolution Reaction in Alkaline Water Electrolysis
Faid, Alaa; Barnett, Alejandro Oyarce; Seland, Frode; Sunde, Svein (Journal article; Peer reviewed, 2019)Ni and Ni-doped with transition metals (TM) such as Fe and Co represent the most suitable electrodes for hydrogen evolution reaction (HER) in alkaline media. Various compositions of co-precipitated Ni1 + xFe2 − xO4 and Ni1 ... -
Platinum and Platinum Group Metal-Free Catalysts for Anion Exchange Membrane Fuel Cells
Truong, Van Men; Tolchard, Julian R; Svendby, Jørgen; Manikandan, Maidhily; Miller, Hamish; Sunde, Svein; Hsiharng, Yang; Dekel, Dario; Barnett, Alejandro Oyarce (Journal article; Peer reviewed, 2020)The development of active hydrogen oxidation reaction (HOR) and oxygen reduction reaction (ORR) catalysts for use in anion exchange membrane fuel cells (AEMFCs), which are free from platinum group metals (PGMs), is expected ... -
Solcelleanlegg og energilagring på Sveberg Teknosenter
Egerdahl, Martin August; Hansen, Thomas Dybvig; Shields, Johan (Bachelor thesis, 2021)Hensikten med bacheloroppgaven var å levere et tilbud for en potensiell utbygging av det eksisterende solcelleanlegget på Sveberg Teknosenter. Per dags dato er det tre separate anlegg med et samlet produksjonspotensial på ... -
The Influence of Catalyst Layer Thickness on the Performance and Degradation of PEM Fuel Cell Cathodes with Constant Catalyst Loading
Darab, Mahdi; Barnett, Alejandro Oyarce; Lindbergh, Göran; Thomassen, Magnus Skinlo; Sunde, Svein (Journal article, 2017)Three catalytic layers containing Pt nanoparticles supported on high surface area carbon of different Pt loading but with the same total amount of platinum and therefore of different thickness were employed as cathode ... -
The performance of nickel and nickel-iron catalysts evaluated as anodes in anion exchange membrane water electrolysis
Cossar, Emily; Barnett, Alejandro Oyarce; Seland, Frode; Baranova, Elena (Journal article; Peer reviewed, 2019)Anion exchange membrane water electrolysis (AEMWE) is an efficient, cost-effective solution to renewable energy storage. The process includes oxygen and hydrogen evolution reactions (OER and HER); the OER is kinetically ...