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Szabo, Nicholas F; Lee, C.; Trimboli, Joseph; Figueroa, O.; Ramamoorthy, R.; Midlam-Mohler, Shawn; Soliman, Ahmed; Verweij, H.; Dutta, Prabir K.; Akbar, Sheikh A.

doi:10.1023/a:1026314511458

Cited by 47 publications

(8 citation statements)

References 10 publications

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“…Therefore, there is an urgent need to design fast, sensitive, selective, rugged, and cost-effective high-temperature gas sensors for power/fuel systems. In the past decades, various gas sensors have been developed for monitoring combustion process (Szabo et al, 2003; Zhang et al, 2007; Liu and Lei, 2013). Among them, solid-electrolyte potentiometric, amperometric, and semiconductor oxide sensors have been extensively studied for high temperature environment.…”

Section: Introductionmentioning

confidence: 99%

Bimodular high temperature planar oxygen gas sensor

et al. 2014

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A bimodular planar O2 sensor was fabricated using NiO nanoparticles (NPs) thin film coated yttria-stabilized zirconia (YSZ) substrate. The thin film was prepared by radio frequency (r.f.) magnetron sputtering of NiO on YSZ substrate, followed by high temperature sintering. The surface morphology of NiO NPs film was characterized by atomic force microscope (AFM) and scanning electron microscope (SEM). X-ray diffraction (XRD) patterns of NiO NPs thin film before and after high temperature O2 sensing demonstrated that the sensing material possesses a good chemical and structure stability. The oxygen detection experiments were performed at 500, 600, and 800°C using the as-prepared bimodular O2 sensor under both potentiometric and resistance modules. For the potentiometric module, a linear relationship between electromotive force (EMF) output of the sensor and the logarithm of O2 concentration was observed at each operating temperature, following the Nernst law. For the resistance module, the logarithm of electrical conductivity was proportional to the logarithm of oxygen concentration at each operating temperature, in good agreement with literature report. In addition, this bimodular sensor shows sensitive, reproducible and reversible response to oxygen under both sensing modules. Integration of two sensing modules into one sensor could greatly enrich the information output and would open a new venue in the development of high temperature gas sensors.

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Section: Introductionmentioning

confidence: 99%

Bimodular high temperature planar oxygen gas sensor

et al. 2014

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“…7 On the other hand, commercial CO 2 sensors based on infrared spectroscopy and chromatography/mass spectrometry are bulky and expensive. 2,8 Under these circumstances, a resistive-type CO 2 sensor changing its resistance upon exposure to sensing gas would be an ideal choice, since challenges associated with gas sealing and miniaturization could easily be solved. In this regard, we have developed Fe-doped barium magnesium niobate (BMN) perovskite for CO 2 sensor applications that shows good sensing characteristics along with mandatory chemical stability under CO 2 and humidity.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of perovskite-type BaMg0.33Nb0.67−xFexO3−δ for potential high temperature CO2 sensors application

2013

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“…Nowadays popular CO 2 tracking devices are based on Fourier‐transform infrared spectroscopy, showing very good accuracy (±30 ppm of CO 2 , ±2%), selectivity, and fast response times (<20 s.) . The nondispersive infrared CO 2 tracking devices are, however, limited by a narrow temperature operation window (0–50 °C), power consumption of around 40 mW for devices being operated in a pulsing mode rather than continuous and also show rather limited potential for further miniaturization due to optical configuration . A promising alternative to those rather expensive devices lies in electrochemical potentiometric CO 2 sensors.…”

Section: Literature Review Of the Type III Potentiometric Gas Sensorsmentioning

confidence: 99%

A Simple and Fast Electrochemical CO₂ Sensor Based on Li₇La₃Zr₂O₁₂ for Environmental Monitoring

et al. 2018

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arise to monitor local CO 2 concentration in order to improve energy efficiency and feedback loops on exhausts as data through small sensing devices. Gas sensors integrated as control units into buildings infrastructure, vehicles, smartphones, and wearable devices contribute to real-time georeferenced chemical tracking, working as well as the feedback units to educate consumers and industry. That would allow not only to monitor large-scale industrial CO 2 emission from power generation, food production, or packaging industries, [7] but also emission from nonindustrial buildings in order to improve energy efficiency of households and commercial areas. CO 2 monitoring is also essential for air-quality control of confined spaces such as office/ laboratory areas or marine vessels, where increased carbon dioxide concentration may not only influence laborers' well-being but also serves to assure their safety. Moreover, CO 2 tracking plays a major role in medical diagnosis for respiratory diseases and sleep disorder. [8,9] Nowadays popular CO 2 tracking devices are based on Fourier-transform infrared spectroscopy, showing very good accuracy (±30 ppm of CO 2 , ±2%), selectivity, and fast response times (<20 s.). [10] The nondispersive infrared CO 2 tracking devices are, however, limited by a narrow temperature operation window (0-50 °C), power consumption of around 40 mW for devices being operated in a pulsing mode rather than continuous and also show rather limited potential for further miniaturization due to optical configuration. [11,12] A promising alternative to those rather expensive devices lies in electrochemical potentiometric CO 2 sensors.In general, an electrochemical potentiometric gas sensor has a simple structure of an electrochemical cell, consisting of three functional components, namely, a sensing electrode, a solid-state electrolyte, and a reference electrode (RE). In such an arrangement, it is the selectivity of the electrode materials, which are used to detect gaseous species that is defining an electromotive force (EMF) of the cell, measured as a cell potential. Potential, as an intrinsic property, is independent on geometry or mass changes of the device, offering high scalability potential for future miniaturization. Here, the EMF manifested as voltage through the cell is related to the relative partial pressure of detected specimen at the electrodes as postulated by the Nernst equation. [13] Depending on the relation between gas and mobile specimen in the solid electrolyte, three types of potentiometric gas sensors can be distinguished, according to Weppner's classification [14] (Figure 1).In the goal of a sustainable energy future, either the energy efficiency of renewable energy sources is increased, day-to-day energy consumption by smart electronic feedback loops is managed in a more efficient way, or contribution to atmospheric CO 2 is reduced. By defining a next generation of fast-response electrochemical CO 2 sensors and materials, one can contribute to local monitoring of CO 2 flows from ind...

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Cited by 47 publications

References 10 publications

Bimodular high temperature planar oxygen gas sensor

Bimodular high temperature planar oxygen gas sensor

Synthesis and characterization of perovskite-type BaMg0.33Nb0.67−xFexO3−δ for potential high temperature CO2 sensors application

A Simple and Fast Electrochemical CO₂ Sensor Based on Li₇La₃Zr₂O₁₂ for Environmental Monitoring

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Untitled

Cited by 47 publications

References 10 publications

Bimodular high temperature planar oxygen gas sensor

Bimodular high temperature planar oxygen gas sensor

Synthesis and characterization of perovskite-type BaMg0.33Nb0.67−xFexO3−δ for potential high temperature CO2 sensors application

A Simple and Fast Electrochemical CO2 Sensor Based on Li7La3Zr2O12 for Environmental Monitoring

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A Simple and Fast Electrochemical CO₂ Sensor Based on Li₇La₃Zr₂O₁₂ for Environmental Monitoring