|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||High-Temperature Systems for Energy Conversion and Storage
||Chromium Poisoning in High Temperature (600-1000C) Electrochemical Systems
||Prabhakar Singh, Chiying Liang, Boxun Hu, Manoj Mahapatra, Byung Jun
|On-Site Speaker (Planned)
Chromium evaporation from iron and nickel base alloys, commonly used in the active electrochemical stacks and balance of plant, along with surface coatings(electrically conducting and insulating) has been extensively studied in our laboratory under nominal systems operating conditions. This presentation aims at providing an overview of gas phase chromium species formation, transport and poisoning of electrodic processes in high temperature electrochemical systems (solid oxide fuel cells, solid oxide electrolyzer cells, and oxygen transport membrane for example) operating in 600-1000C temperature range. Underlying thermodynamic and electrochemical processes associated with chromium evaporation and subsequent interactions with electrochemically active components will be presented. Approaches for reducing the overall chromium flux ingested into the electrochemically active cell and stack will be outlined and recent experimental results will be presented.
||Planned: A print-only volume