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Title: Development of a reliable, miniaturized hydrogen safety sensor prototype

Abstract

In this article, the development and long-term testing of a hydrogen safety sensor for vehicle and infrastructure applications is presented. The working device is demonstrated through application of commercial and reproducible manufacturing methods and rigorous life testing results guided by materials selection, and sensor design. Fabricated using Indium Tin Oxide (ITO) as the sensing electrode, Yttria-Stabilized Zirconia (YSZ) as an oxygen ion conducting solid electrolyte and Platinum (Pt) as a pseudo-counter electrode, the device was subjected to interference studies, temperature cycling, and long-testing routine. The sensor responded in real time to varying concentrations of H{sub 2} (1000 to 20,000 ppm) monitored under a humidified condition. Among the interference gases tested such as nitric oxide (NO), nitrogen dioxide (NO{sub 2}), ammonia (NH{sub 3}), carbon monoxide (CO), and propylene (C{sub 3}H{sub 6}), the sensor showed cross-sensitivity to C{sub 3}H{sub 6}. Analyzing the overall device performance over 4000 hrs of testing for 5000 ppm of H{sub 2}, (a) the sensitivity varied {+-}21% compared to response recorded at 0 hrs, and (c) the response rise time fluctuated between 3 to 46 s. The salient features of the H{sub 2} sensor prototype designed and co-developed by Los Alamos National Laboratory (LANL) are (a) stable threemore » phase interface (electrode/electrolyte/gas) leading to reliable sensor operation, (b) low power consumption, (b) compactness to fit into critical areas of application, (c) simple operation, (d) fast response, (e) a direct voltage read-out circumventing the need for any additional conditioning circuitry, and (f) conducive to commercialization.« less

Authors:
 [1];  [1];  [1];  [1];  [1]
  1. Los Alamos National Laboratory
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1025895
Report Number(s):
LA-UR-10-05221; LA-UR-10-5221
TRN: US201120%%865
DOE Contract Number:  
AC52-06NA25396
Resource Type:
Conference
Resource Relation:
Conference: Fuel Cell Seminar and Exposition, 2010 ; October 18, 2010 ; San Antonio, TX
Country of Publication:
United States
Language:
English
Subject:
30; AMMONIA; CARBON MONOXIDE; COMMERCIALIZATION; FUEL CELLS; GASES; HYDROGEN; INDIUM; MANUFACTURING; NITRIC OXIDE; NITROGEN DIOXIDE; OXYGEN IONS; PLATINUM; PROPYLENE; PULSE RISE TIME; SAFETY; SENSITIVITY; SENSORS; SOLID ELECTROLYTES; TESTING; TIN OXIDES

Citation Formats

Sekhar, Praveen K, Brosha, Eric L, Rangachary, Mukundan, Garzon, Fernando H, and Williamson, Todd L. Development of a reliable, miniaturized hydrogen safety sensor prototype. United States: N. p., 2010. Web.
Sekhar, Praveen K, Brosha, Eric L, Rangachary, Mukundan, Garzon, Fernando H, & Williamson, Todd L. Development of a reliable, miniaturized hydrogen safety sensor prototype. United States.
Sekhar, Praveen K, Brosha, Eric L, Rangachary, Mukundan, Garzon, Fernando H, and Williamson, Todd L. Fri . "Development of a reliable, miniaturized hydrogen safety sensor prototype". United States. https://www.osti.gov/servlets/purl/1025895.
@article{osti_1025895,
title = {Development of a reliable, miniaturized hydrogen safety sensor prototype},
author = {Sekhar, Praveen K and Brosha, Eric L and Rangachary, Mukundan and Garzon, Fernando H and Williamson, Todd L},
abstractNote = {In this article, the development and long-term testing of a hydrogen safety sensor for vehicle and infrastructure applications is presented. The working device is demonstrated through application of commercial and reproducible manufacturing methods and rigorous life testing results guided by materials selection, and sensor design. Fabricated using Indium Tin Oxide (ITO) as the sensing electrode, Yttria-Stabilized Zirconia (YSZ) as an oxygen ion conducting solid electrolyte and Platinum (Pt) as a pseudo-counter electrode, the device was subjected to interference studies, temperature cycling, and long-testing routine. The sensor responded in real time to varying concentrations of H{sub 2} (1000 to 20,000 ppm) monitored under a humidified condition. Among the interference gases tested such as nitric oxide (NO), nitrogen dioxide (NO{sub 2}), ammonia (NH{sub 3}), carbon monoxide (CO), and propylene (C{sub 3}H{sub 6}), the sensor showed cross-sensitivity to C{sub 3}H{sub 6}. Analyzing the overall device performance over 4000 hrs of testing for 5000 ppm of H{sub 2}, (a) the sensitivity varied {+-}21% compared to response recorded at 0 hrs, and (c) the response rise time fluctuated between 3 to 46 s. The salient features of the H{sub 2} sensor prototype designed and co-developed by Los Alamos National Laboratory (LANL) are (a) stable three phase interface (electrode/electrolyte/gas) leading to reliable sensor operation, (b) low power consumption, (b) compactness to fit into critical areas of application, (c) simple operation, (d) fast response, (e) a direct voltage read-out circumventing the need for any additional conditioning circuitry, and (f) conducive to commercialization.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2010},
month = {1}
}

Conference:
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