Browsing SINTEF Open by Author "Wang, Zhaohui"
Now showing items 1-16 of 16
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Are MXenes Suitable as Cathode Material for Rechargeable Mg Batteries?
Kaland, Henning; Hadler-Jacobsen, Jacob; Fagerli, Frode Håskjold; Wagner, Nils Peter; Wang, Zhaohui; Selbach, Sverre Magnus; Vullum-Bruer, Fride; Wiik, Kjell; Schnell, Sondre Kvalvåg (Peer reviewed; Journal article, 2020) -
Carbon cathode wear in aluminium electrolysis cells
Senanu, Samuel; Wang, Zhaohui; Ratvik, Arne Petter; Grande, Tor (Journal article; Peer reviewed, 2019)Autopsies of six spent potlinings with different carbon cathode block grades, amperage regimes and cell technologies were conducted at three separate smelters to reveal possible mechanisms causing cathode wear. Microstructure ... -
Carbon Cathode Wear in Aluminium Electrolysis Cells
Senanu, Samuel; Wang, Zhaohui; Ratvik, Arne Petter; Grande, Tor (Peer reviewed; Journal article, 2019)Autopsies of six spent potlinings with different carbon cathode block grades, amperage regimes and cell designs were conducted at three separate smelters to reveal possible mechanisms causing cathode wear. The microstructure ... -
Cathode Wear in Electrowinning of Aluminum Investigated by a Laboratory Test Cell
Wang, Zhaohui; Nobakhtghalati, Saeid; Støre, Anne; Solheim, Asbjørn; Tschöpe, Kati; Ratvik, Arne Petter; Grande, Tor (The Minerals, Metals & Materials Series;2367-1181, Peer reviewed; Journal article, 2016)The lifetime of an aluminum electrolysis cell is mainly determined by the cathode wear, especially for high amperage cells utilizing graphitized carbon cathodes. The cathode wear mechanisms are, however, complex and still ... -
Diffusion of alkali metals in the first stage graphite intercalation compounds by vdW-DFT calculations
Wang, Zhaohui; Ratvik, Arne Petter; Grande, Tor; Selbach, Sverre Magnus (Journal article; Peer reviewed, 2015)Diffusion of alkali metal cations in the first stage graphite intercalation compounds (GIC) LiC6, NaC6, NaC8 and KC8 has been investigated with density functional theory (DFT) calculations using the optPBE-vdW van der Waals ... -
Direct Method for Producing Scandium Metal and Scandium-Aluminium Intermetallic Compounds from the Oxides
Martinez, Ana Maria Cuellar; Osen, Karen Sende; Gudbrandsen, Henrik; Sommerseth, Camilla; Wang, Zhaohui; Darell, Ove (Journal article; Peer reviewed, 2018)The electrochemical de-oxidation process, also called FFC-Cambridge process, has been proposed previously to produce reactive metals and their alloys through reduction of their metal oxides. The process works by introducing ... -
Electrochemical Characterization of Silver and Iron Ions in Choline Chloride-Ethylene Glycol DES Electrolyte
Jahrsengene, Gøril; Wang, Zhaohui; Martinez Cuellar, Ana Maria (Peer reviewed; Journal article, 2024)Solar energy is growing to be an important source of renewable energy in the world, and the need of recycling processes to recover the strategic materials used for this technology are necessary. Ag may be recovered from ... -
Electrochemical Recovery of Sb, Te, and In in Choline Chloride-Ethylene Glycol DES Electrolyte
Jahrsengene, Gøril; Wang, Zhaohui; Martinez Cuellar, Ana Maria (Peer reviewed, 2024)Choline Chloride-Ethylene Glycol DES mixture (ethaline) is considered a green solvent and is one of the most popular DESs to combine with electrochemical recovery processes due to its superior electrochemical properties ... -
Formation of aluminium carbide in Hall-Héroult electrolysis cell environments
Novák, Bronislav; Ratvik, Arne Petter; Wang, Zhaohui; Grande, Tor (Journal article; Peer reviewed, 2018)The formation and dissolution of aluminium carbide under conditions similar to the chemical and electrochemical environments in the Hall-Héroult process were studied in laboratory cells, including cells with reversed ... -
Formation of Carbon Build-Up on the Flue Wall of Anode Baking Furnace
Wang, Zhaohui; Rørvik, Stein; Ratvik, Arne Petter; Grande, Tor (The Minerals, Metals & Materials Series;2367-1181, Peer reviewed; Journal article, 2017)A hard carbon build-up layer often forms on the flue wall surface in anode baking furnaces. The layer accumulates over thermal circles and needs to be mechanically removed regularly to ensure sufficient space for the anodes ... -
Multi-scale Modelling of Titanium Diboride Degradation Using Crystal Elasticity Model and Density Functional Theory
Saai, Afaf; Wang, Zhaohui; Pezzotta, Micol; Friis, Jesper; Ratvik, Arne Petter; Vullum, Per Erik (The Minerals, Metals & Materials Series;2367-1181, Peer reviewed; Journal article, 2018)Titanium diboride (TiB2) is regarded as the most promising material to be used as inert cathodes in the electrochemical reduction of alumina to aluminium metal. TiB2 is well known as a ceramic material with high strength ... -
Recovery of Li, Co, Cu and Ni by Molten Salt Chlorination
Osen, Karen Sende; Martinez Cuellar, Ana Maria; Støre, Anne; Solem, Cathrine Kyung Won; Wang, Zhaohui; Molvik, Kent-Robert; Roll-Matthiesen, Aksel; Sundby, Stian; Senanu, Samuel (Peer reviewed; Journal article, 2024)The recent exponential growth in the Li ion batteries (LIB) market, is largely driven by the demand for electric vehicles and the general transition to a green and digital economy. It is therefore imperative to develop ... -
Removing fluoride-terminations from multilayered V2CTx MXene by gas hydrolyzation
Fagerli, Frode Håskjold; Wang, Zhaohui; Grande, Tor; Kaland, Henning; Selbach, Sverre Magnus; Wagner, Nils Peter; Wiik, Kjell (Peer reviewed; Journal article, 2022)Two-dimensional MXenes have shown great promise for many different applications, but in order to fully utilize their potential, control of their termination groups is essential. Here we demonstrate hydrolyzation with a ... -
Solvent-Controlled Charge Storage Mechanisms of Spinel Oxide Electrodes in Mg Organohaloaluminate Electrolytes
Wang, Lu; Wang, Zhaohui; Vullum, Per Erik; Selbach, Sverre Magnus; Svensson, Ann Mari; Vullum-Bruer, Fride (Peer reviewed; Journal article, 2017)Considering the improved safety, reduced cost, and high volumetric energy density associated with Mg batteries, this technology has distinct advantages for large-scale energy storage compared to other existing battery ... -
Thermogravimetric Analysis of Thermal Insulating Materials Exposed to Sodium Vapor
Luneng, Raymond; Wang, Zhaohui; Ratvik, Arne Petter; Grande, Tor (Journal article; Peer reviewed, 2019) -
Wetting of Carbon Cathodes by Molten Electrolyte and Aluminium
Senanu, Samuel; Ratvik, Arne Petter; Wang, Zhaohui; Grande, Tor (Peer reviewed; Journal article, 2021)The extent to which the carbon cathode is wetted by molten electrolyte or molten aluminium metal is important for understanding the cathode wear during aluminium electrolysis. The present paper reports on a laboratory study ...