Mixed potential NOx sensors using thin film electrodes and electrolytes for stationary reciprocating engine type applications

Brosha, Eric L.; Mukundan, Rangachary; Lujan, Roger; Garzón, Fernando H.

doi:10.1016/j.snb.2005.12.044

Cited by 72 publications

(44 citation statements)

References 18 publications

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“…In 1996 and 1997, Sorita and Kawano have also reported the YSZ-based sensor using various mixed oxides (e.g., perovskite and spinel) as SE coated with an Al 2 O 3 (+Pt) catalyst layer for selective detection of CO (or H 2 ) [49,50]. Since then, substantial development of this type of gas sensors has been achieved early in this century by many leading research groups in the world [51][52][53][54][55][56][57][58][59][60][61][62][63][64].…”

Section: Introductionmentioning

confidence: 99%

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

Miura

Sato

Anggraini

et al. 2014

Ionics

299

175

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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.

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Section: Introductionmentioning

confidence: 99%

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

Miura

Sato

Anggraini

et al. 2014

Ionics

299

175

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“…For the hydrogen sensors that utilized a perovksite-based working electrode, La 0.8 Sr 0.2 CrO 3 (LSCrO) was selected because this material is well known to exhibit desirable redox kinetics for mixed potential sensors. [18][19][20][21] Because LSCrO possesses a high degree of mechanical and thermodynamic stability-far greater than that for ITOit was possible to build complete sensors using HTCC fabrication methods.…”

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.

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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.

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“…including (La,Ca)CrO 3 [275], (La,Ba)CrO 3 [264], La(Cr,Mg)O 3 [312], and (Sm,Sr) CrO 3 [313], have shown sensitivity towards NO x .…”

Section: Electrocatalytic Electrodesmentioning

confidence: 99%

“…(La,Ca)MnO 3 doped with either cobalt or nickel on the manganese site has been used as the electrode for NO x sensors [319]. The outputs of some NO x sensors with perovskite electrodes are shown in Figure 13.26 [255,256,264,275,309,312].…”

Section: Electrocatalytic Electrodesmentioning

confidence: 99%

“…However, as the relative responses to different gases differ among electrodes, the patterns of responses in a multiple-electrode sensor array can be used to recognize individual gas concentrations within a mixed gas environment. The relative selectivities of the different electrodes can change with temperature, which provides an additional parameter to improve selectivity [228,312]. Figure 13.23 Sensitivities of NO 2 sensors with YSZ electrolytes and WO 3 [254][255][256][257][258][259]262] or NiO [264][265][266][267][268][269].…”

Section: Log [Co] (Ppm)mentioning

confidence: 99%

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Electrochemical Sensors: Fundamentals, Key Materials, and Applications

Fergus

2009

Solid State Electrochemistry I

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Solid electrolytes are well suited for use in chemical sensors for high-temperature applications. The first such sensors followed from the use of solid electrolytes for thermodynamic measurements, and are based on galvanic cells, for which the open circuit voltage is related to the concentration of the mobile ionic species, or to another target species through equilibration at the electrode surface. However, sensors can also be based on nonequilibrium, but steady-state, potentials established between electrochemical reactions at the electrode. Another approach is to use the current passing through the electrolyte, rather than the voltage across the electrolyte, as the sensor signal. In this chapter we first describe the different methods for using solid electrolytes in chemical sensors, and then discuss some of the materials challenges and example applications. IntroductionMore than 50 years ago, Kiukkola and Wagner [1] demonstrated that solid electrolytes couldbeusedingalvaniccellstomeasurethethermodynamicpropertiesofoxides.Those pioneering studies subsequently led to the more practical application of solid electrolytes in chemical sensors. The ionic conduction in solid electrolytes is thermally activated and thus its rate increases with increasing temperature; consequently, solid electrolytes are well suited for high-temperature applications. On the other hand, such temperature dependencealsomeansthatsensorsbasedonsolidelectrolytescanrespondsluggishlyor may be inoperable at low temperatures. However, one of the advantages of solid-state devices, such as those based on solid electrolytes, is that they can be miniaturized [2,3]. Decreasingthedevicedimensionsreducesdiffusionlengths,whichinturndecreasesthe response time and thus also the minimum operating temperature.Ionic conducting solids can be used in a variety of different types of sensor [4][5][6][7][8][9][10][11][12]. Solids forwhichthe ionicconductivity is much largerthanthe electronic conductivity can Solid State Electrochemistry I: Fundamentals, Materials and their Applications. Edited by Vladislav V. Kharton

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Mixed potential NOx sensors using thin film electrodes and electrolytes for stationary reciprocating engine type applications

Cited by 72 publications

References 18 publications

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

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

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

Electrochemical Sensors: Fundamentals, Key Materials, and Applications

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