Browsing SINTEF Industri by Author "Haarberg, Geir Martin"
Now showing items 1-16 of 16
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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 (Peer reviewed; Journal article, 2017) -
Effect of composition and temperature on current efficiency for aluminium electrolysis from cryolite-based molten alumina electrolytes
Morishige, Taiki; Haarberg, Geir Martin; Gudbrandsen, Henrik; Skybakmoen, Egil; Solheim, Asbjørn; Takenaka, Toshihide (Peer reviewed; Journal article, 2017)The current efficiency (CE) for aluminium electrolysis in modern cells can be as high as 96 %. The main reason for loss in current efficiency is the so-called back reaction between dissolved metal and the anode product of ... -
Electrochemical Behavior of Tin in Molten LiCl-KCl at 450 ℃
Qin, Bo; Cui, Peng; Martinez, Ana Maria Cuellar; Haarberg, Geir Martin (Peer reviewed; Journal article, 2019)The electrochemical behavior of tin was studied with cyclic voltammetry at glassy carbon electrodes in the fused LiCl-KCl at 450 ℃. Metallic tin deposition on the glassy carbon electrode occurs at a potential of around ... -
Electrochemical Behaviour of Industrial IrO2-Ta2O5 Anodes for Copper Electrowinning
Xu, Wenting; Haarberg, Geir Martin; Sunde, Svein; Seland, Frode; Ratvik, Arne Petter; Zimmerman, Erik; Shimamune, Takayuki; Åkre, Torjus (Peer reviewed; Journal article, 2017) -
Electrode behaviors of Na-Zn liquid metal battery
Xu, Junli; Martinez, Ana Maria Cuellar; Osen, Karen Sende; Kjos, Ole Sigmund; Kongstein, Ole Edvard; Haarberg, Geir Martin (Peer reviewed; Journal article, 2017)The electroreduction processes on a Mo electrode in a Na-Zn liquid metal battery cell with a molten NaCl-CaCl2-ZnCl2 electrolyte were investigated at 565°C. The effect of the battery operating parameters on the loss rate ... -
Electrodeposition of indium and tin from molten chloride electrolytes
Haarberg, Geir Martin; Qin, Bo; Martinez, Ana Maria Cuellar (Peer reviewed; Journal article, 2017)Recycling of electronic waste to recover the metal value is of prime importance, especially for metals with limited resources. An electrochemical approach should be an interesting option to develop sustainable recycling ... -
Electrolysis of indium oxide in LiCl-KCl based molten salts with a liquid cathode
Cui, Peng; Qin, Bo; Martinez, Ana Maria Cuellar; Haarberg, Geir Martin (Peer reviewed; Journal article, 2020)In this work, the feasibility of extracting of metallic indium from In2O3 and ITO through the direct electrochemical reduction at 450°C in molten salt LiCl-KCl was studied. Cyclic voltammetry was carried out to study the ... -
Electrolyte Melt Compositions for Low Temperature Molten Carbonate Thermocell
Kandhasamy, Sathiyaraj; Solheim, Asbjørn; Kjelstrup, Signe; Haarberg, Geir Martin (Journal article, 2018)Industrial processes for the production of metals and alloys by metallurgical and electrochemical methods generate a great deal of waste heat due to irreversible losses. This waste heat may be used as a power source to ... -
Gas electrodes with nickel based current collectors for molten carbonate electrolyte thermo-electrochemical cells
Kandhasamy, Sathiyaraj; Haarberg, Geir Martin; Kjelstrup, Signe; Solheim, Asbjørn (Peer reviewed; Journal article, 2019)Thermo-electrochemical cells with inexpensive molten carbonate electrolyte and (CO2|O2) gas electrodes allow the possible conversion of high temperature waste heat from industrial processes into electricity. The cell ... -
Influence of electrode gas flow rate and electrolyte composition on thermoelectric power in molten carbonate thermocell
Kandhasamy, Sathiyaraj; Calandrino, Luca; Burheim, Odne Stokke; Solheim, Asbjørn; Kjelstrup, Signe Helene; Haarberg, Geir Martin (Peer reviewed; Journal article, 2016)A thermocell (thermo-electrochemical cell) is an electrochemical system with two identical electrodes placed at different temperatures in an electrolyte solution. Ion transport between the electrodes due to the temperature ... -
Influence of Electrode Gas Flow Rate and Solid Oxide Ratio in Electrolyte on the Seebeck Coefficient of Molten Carbonate Thermocell
Kandhasamy, Sathiyaraj; Calandrino, Luca; Burheim, Odne Stokke; Solheim, Asbjørn; Kjelstrup, Signe; Haarberg, Geir Martin (Peer reviewed; Journal article, 2017) -
Investigation of Sodium Sulfate Additions into Cryolite-Alumina Melts
Meirbekova, Rauan; Haarberg, Geir Martin; Aarhaug, Thor Anders; Sævarsdóttir, Gudrun A. (The Minerals, Metals & Materials Series;2367-1181, Peer reviewed; Journal article, 2016)In the Hall-Héroult process, sulfur impurities may not only emit harmful gases but also reduce current efficiency. To better understand this process, the behaviour of sulfur compounds in a cryolite-alumina melt at 1253 K ... -
Porous Carbon Anodes for the Supply of Methane during Electrowinning of Aluminium
Khalaghi, Babak; Gudbrandsen, Henrik; Kjos, Ole Sigmund; Osen, Karen Sende; Mokkelbost, Tommy; Haarberg, Geir Martin (Chapter; Peer reviewed, 2016)One of the major downsides of the current aluminium production process is the high amount of CO2 e mission. One alternative is to replace the consumable carbon anodes with inert anodes so that oxygen evolves instead of CO2 ... -
Removal and recovery of indium from ITO coated glass and scraps using molten salt electrolysis
Cui, Peng; Qin, Bo; Martinez, Ana Maria Cuellar; Haarberg, Geir Martin (Peer reviewed; Journal article, 2019)Indium is an important strategic resource due to the scarcity for the metal. In the present study, molten salt electrolysis is used to reduce indium from ITO coated glass and scraps in order to seek a new way to recycle ... -
Sandblasting effect on performance and durability of Ti based IrO2 –Ta2O5 anode in acidic solutions
Xu, Wenting; Haarberg, Geir Martin; Sunde, Svein; Seland, Frode; Ratvik, Arne Petter; Holmin, Susanne; Gustavsson, J; Afvander, Åsa; Zimmerman, Erik; Åkre, Torjus (Peer reviewed; Journal article, 2018)The effect of applying sandblasting during pretreatment while preparing titanium based IrO2 – Ta2O5 anodes by the conventional method was investigated. It was observed that sandblasting influences the surface morphology ... -
The durability of the thermally decomposed IrO2-Ta2O5 coated titanium anode in a sulfate solution
Xu, Wenting; Haarberg, Geir Martin; Seland, Frode; Sunde, Svein; Ratvik, Arne Petter; Holmin, Susanne; Afvander, Åsa; Gustavsson, John; Zimmerman, Erik; Årke, Torjus (Journal article; Peer reviewed, 2019)