Development and testing of a miniaturized hydrogen safety sensor prototype

Sekhar, Praveen Kumar; Brosha, Eric L.; Mukundan, Rangachary; Nelson, Mark A.; Williamson, Todd L.; Garzón, Fernando H.

doi:10.1016/j.snb.2010.05.031

Cited by 41 publications

(30 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Alternative strategy in obtaining high-performance H 2 sensor was proposed by Sekhar et al, by using a novel sensor configuration comprising ITO-SE and Pt-RE combined with an integrated Pt heater, as shown in Fig. 20 [159,160]. This uniquely designed sensor employs dense SE together with the porous YSZ layer (an inset of Fig.…”

Section: H 2 Sensormentioning

confidence: 99%

See 1 more Smart Citation

A review of mixed-potential type zirconia-based gas sensors

Miura

Sato

Anggraini

et al. 2014

Ionics

299

175

View full text Add to dashboard Cite

A robust and reliable gas sensing device is considered as a convenient and practical solution for gas concentration monitoring that has become a mandatory requirement in different field of applications. For in situ hazardous gases detection, a mixed-potential type gas sensor has been regarded as a promising solid-state gas sensor. For the past three decades, there has been a significant progress in achieving high performance in mixed-potential type sensors. Therefore, this review is focused on reporting the development of mixedpotential type gas sensors with combined yttria-stabilized zirconia (YSZ) as the base solid electrolyte material and various classes of electrode materials for their potential utilization as a high-performance sensing electrode. The underlying sensing mechanism of a mixed-potential type YSZ-based sensor is elaborated here in detail. Transformation in design and configuration of this type of sensor is also covered in this report. In addition, recent progresses on mixed-potential type gas sensors development for detection of several target gases, such as carbon monoxide, hydrocarbons, nitrogen oxides, hydrogen, and ammonia, are reviewed. Strategies to improve the sensing characteristic, particularly gas sensitivity and selectivity, are also reported. Based on the understanding of the fundamental sensing mechanism and the requirements for high-performance gas sensors, challenges and future trends for this type of gas sensor development are discussed.

show abstract

Section: H 2 Sensormentioning

confidence: 99%

“…This uniquely designed sensor employs dense SE together with the porous YSZ layer (an inset of Fig. 20) [159]. This particular design is expected to reduce the counter-productive effect of heterogeneous catalysis that generally occurs within the porous oxide-SE.…”

Section: H 2 Sensormentioning

confidence: 99%

A review of mixed-potential type zirconia-based gas sensors

Miura

Sato

Anggraini

et al. 2014

Ionics

299

175

View full text Add to dashboard Cite

show abstract

“…More details on the development history and design of the sensor element can be found in Sekhar et al 17 The sensor platforms were fabricated by ESL ElectroScience (King of Prussia, PA) according to LANL/LLNL design specifications. Two versions of the sensor were prepared for the field trials study.…”

Section: B682mentioning

confidence: 99%

“…The approach used to fabricate the sensors and shadow mask geometries used to define the electrodes and electrolyte regions is explained in more detail elsewhere. 14,17 In the previous work, 17 RF magnetron sputtering was used to prepare the ITO working electrode while electron beam evaporation was used to deposit the ITO here. In this work, there was no discernable difference between these approaches, other than deposition rate.…”

Section: B682mentioning

confidence: 99%

Editors' Choice—Field Trials Testing of Mixed Potential Electrochemical Hydrogen Safety Sensors at Commercial California Hydrogen Filling Stations

Brosha

Romero

Poppe³

et al. 2017

J. Electrochem. Soc.

Self Cite

View full text Add to dashboard Cite

Hydrogen safety sensors must meet specific performance requirements, mandated by the U.S. Department of Energy, for hydrogen fueling station monitoring. Here, we describe the long-term performance of two zirconia-based mixed potential electrochemical hydrogen gas sensors, developed specifically with a high sensitivity to hydrogen, low cross-sensitivity, and fast response time. Over a two-year period, sensors with tin-doped indium oxide and strontium doped lanthanum chromite electrodes were deployed at two stations in four field trials tests conducted in Los Angeles. The sensors documented the existence of hydrogen plumes ranging in concentration from 100 to as high as 2700 ppm in the area surrounding the dispenser, consistent with depressurization from 700 bar following vehicle refueling. As expected, the hydrogen concentration reported by the mixed potential sensors was influenced by wind direction. Baseline stability testing at a Chino, CA station showed no measureable baseline drift throughout 206 days of uninterrupted data acquisition. The high baseline stability, excellent correlation with logged fueling/depressurization events, and absence of false alarms suggest that the zirconia-based mixed potential sensor platform is a good candidate for protecting hydrogen infrastructure where frequent calibrations or sensor replacement to reduce the false alarm frequency have been shown to be cost prohibitive.

show abstract

“…In an earlier attempt, the authors had demonstrated a proof-of-concept miniaturized H 2 sensor prototype [9]. The prototype is a thin film implementation [10] based on an electrochemical, mixed potential detection scheme using a controlled interface approach [11].…”

Section: Introductionmentioning

confidence: 99%