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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium REWAS 2022: Decarbonizing the Materials Industry
Presentation Title Solid Oxide Membrane (SOM) Based Technology for Carbon-free Efficient Production of Solar-grade Silicon
Author(s) Haoxuan Yan, Michelle Sugimoto, Uday Pal, Adam Powell
On-Site Speaker (Planned) Haoxuan Yan
Abstract Scope State-of-the-art Solar-grade silicon production is energy intensive and has a negative impact on the environment. Due to the robust and rapid growth of the Si-based photovoltaic (PV) industry, it is necessary to develop a greener technology for Silicon production. Solid oxide membrane (SOM) electrolysis is a proven versatile green technology that can be developed to economically produce many important metal or metal compounds from their oxides. This work will discuss application of SOM electrolysis to produce solar-grade silicon from silica in a single-step resulting in net-zero-carbon emission. The high-temperature SOM electrolysis cell employs stable molten oxide-fluoride bath with silicon wafer cathode and stabilized zirconia membrane-based novel anodes. The cell design and process parameters are selected to enable uniform and dense Silicon deposition on the Si-wafer cathode. Electrochemical characterization of the process will be presented.
Proceedings Inclusion? Planned:
Keywords Electrometallurgy, Sustainability, High-Temperature Materials


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Carbon Footprint Reduction Opportunities in the Manganese Alloys Industry
CO2 as Raw Material for Chemical and Fuel Productions through Electrocatalysis
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Field Demonstration of the Reversa Mineral Carbonation Process Using Coal and Natural Gas Flue Gas Streams
HIsarna: A Technology to Meet Both the Climate and Circularity Challenges for the Iron and Steel Industry
Iron-ore Reduction Using Green Hydrogen: A Study for Recycling Wastes in Egyptian Steel Industry
Pilot Scale Test of Flue Gas Recirculation for the Silicon Process
PreMa-project Development of New Technologies to Reduce CO2 Emissions in Mn-alloy Production
Pyrometallurgy-based Research Conducted at Mintek towards Decarbonizing the Metals Industry
Solid Oxide Membrane (SOM) Based Technology for Carbon-free Efficient Production of Solar-grade Silicon
Supercritical Carbonation of Steelmaking Slag for the CO2 Sequestration
Tecno-economic Pre-feasibility Study of a Hydrogen Plasma Based Ferromanganese Plant
The Carbon Age: Reimaging the Lifecycle of Fuels and Materials
Towards Green Ferroalloys: Replacement of Fossil Reductants in the Pre-reduction Process of Chromite by Bio-based Alternatives

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