|About this Abstract
||Materials Science & Technology 2012
||Nanotechnology for Energy, Environment, Healthcare and Industry
||Mixed-Conducting Nanomaterials for Application in High-Temperature Chemical Micro-Sensors
||Edward M. Sabolsky, Christina Wildfire, Katarzyna Sabolsky
|On-Site Speaker (Planned)
||Edward M. Sabolsky
The objective of this proposed work is to develop chemical sensors and sensor arrays composed of nano-derived, metal-oxide composite materials to detect H<SUB>2</SUB> within high-temperature environments (>500<SUP>°</SUP>C). These sensors are required within advanced energy systems, such as solid-oxide fuel cell systems, and would assist in the implementation of advanced sensor nets within coal-fired power plants and future Integrated Combined Cycle Gasification (IGCC) systems. Hydrothermal synthesis experiments were completed in order to form refractory oxide gas sensing materials based on various zirconate, stannate and titanate nanomaterials. The mixed-conducting nanomaterials were incorporated into both a macro- and micro-sized chemi-resistive sensor platform with various interdigitized electrode geometries. The stability, sensitivity, and selectivity of the nanoparticle absorbents were evaluated at >600<SUP>°</SUP>C within various gas mixtures. The sensors showed rapid response to 0.005-5% H<SUB>2</SUB>, and showed remarkable stability at testing temperatures between 600-1000<SUP>°</SUP>C for testing periods >24 hr.