Development of Solid-State Sensor Platforms for Detection of H 2 and CO Daniel Benhammou Ken Gall Will Medlin

Motivations CO detection / quantification in H 2 streams CO detection / quantification in H 2 streams Metal film sensors used for H 2 detection Metal film sensors used for H 2 detection Combine capacitive and resistive sensors Combine capacitive and resistive sensors Fuel Cell Applications Fuel Cell Applications H 2 generated from hydrocarbon reformation H 2 generated from hydrocarbon reformation CO poison anode catalyst PEM CO poison anode catalyst PEM

Goals Characterize current samples Characterize current samples Scanning Electron Microscopy Scanning Electron Microscopy Atomic Force Microscopy Atomic Force Microscopy Zygo Interferometer Zygo Interferometer Analyze surface chemical reactions Analyze surface chemical reactions Iterate on current design to achieve maximum sensing capabilities Iterate on current design to achieve maximum sensing capabilities

Methods Build flow cell for sensors Build flow cell for sensors Observe resistive / capacitive response for different gas concentrations Observe resistive / capacitive response for different gas concentrations Observe surface chemistry reactions Observe surface chemistry reactions Prepare second generation bimetallic films Prepare second generation bimetallic films Test dynamic response of second generation Test dynamic response of second generation

Timeline SepOctNovDecJanFebMarApril Literature Review Build Flow Cell Collect Results Second Generation