|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||REWAS 2022: Decarbonizing the Materials Industry
||Solid Oxide Membrane (SOM) Based Technology for Carbon-free Efficient Production of Solar-grade Silicon
||Haoxuan Yan, Michelle Sugimoto, Uday Pal, Adam Powell
|On-Site Speaker (Planned)
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.
||Electrometallurgy, Sustainability, High-Temperature Materials