Thick Film Planar CO2 Sensors Based on Na β-Alumina Solid Electrolyte

Hong, Hye Jin; Kim, Jun Woong; Jung, Sung-Yoon; Park, Chong Ook

doi:10.1007/s10832-005-2192-4

Cited by 12 publications

(7 citation statements)

References 13 publications

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“…Several studies are focused on the potentiometric detection type and conductivity. They depend on the change in the concentration of ions, due to a change in pH [44], modifying the measured potential [44,45] or conductivity [46][47][48]. On the other hand, as specified by Neethirajan et al [49], some potentiometric sensors display poor repeatability and reproducibility of potentiometric responses.…”

Section: Identification Of Dielectric Properties Of Materials By Retrmentioning

confidence: 99%

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Wheat gluten, a bio-polymer to monitor carbon dioxide in food packaging: Electric and dielectric characterization

Bibi

Guillaume

Gontard

et al. 2017

Sensors and Actuators B: Chemical

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The use of wheat gluten as sensing material to detect carbon dioxide is a promising approach. The dielectric properties of wheat gluten are modified in contact with carbon dioxide gas at high relative humidity (90%) and at a temperature of 25 °C due to a structural change in the sensing material, where amino groups act as receptors to carbon dioxide molecules. In the present study, the effects of carbon dioxide on the electrical and dielectric properties of wheat gluten at 20% and 90% of relative humidity (usually found in food packaging) are determined and discussed. At 90% of relative humidity, a linear increase of the dielectric permittivity and dielectric loss was observed with a significant hysteresis which increased with the number of carbon dioxide treatment cycles. One of the significant results is the increase in the dielectric permittivity from 7.01 ± 0.07 to 12.02 ± 0.03 with a sensitivity of 31.38 ± 0.06 fF/%CO2 measured at 868 MHz. The developed sensor is sought to be integrated in the design of UHF-RFID (ultra-high frequency − radio frequency identification) systems working at 868 MHz

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Section: Identification Of Dielectric Properties Of Materials By Retrmentioning

confidence: 99%

“…Hong et al [45]. This is not applicable in the agrifood sector where fresh produce are often stored at much lower temperatures.…”

Section: Identification Of Dielectric Properties Of Materials By Retrmentioning

confidence: 99%

Wheat gluten, a bio-polymer to monitor carbon dioxide in food packaging: Electric and dielectric characterization

Bibi

Guillaume

Gontard

et al. 2017

Sensors and Actuators B: Chemical

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show abstract

“…Electrochemical potentiometric CO 2 sensors using solid electrolytes are one among promising methods because of their compact structure, ability of continuous monitoring, high selectivity, and low cost (Hong, Kim, Jung, & Park, 2005). However, they require power for signal generation, and often require above 400 C operating temperature and, therefore, are not suited for food packaging applications.…”

Section: Conventional Co 2 Sensorsmentioning

confidence: 99%

Carbon dioxide sensors for intelligent food packaging applications

2012

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“…For example, Na 2 CO 3 can be used with Na b alumina [135][136][137], NASICON [138][139][140][141][142][143][144][145][146], or a sodium aluminosilicate glass [147] as the electrolyte for a CO 2 sensor, in which case the Na 2 CO 3 equilibrates with CO 2 in the gas and Na þ in the electrolyte according to the following reaction:…”

Section: Auxiliary Electrodesmentioning

confidence: 99%

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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Thick Film Planar CO2 Sensors Based on Na β-Alumina Solid Electrolyte

Cited by 12 publications

References 13 publications

Wheat gluten, a bio-polymer to monitor carbon dioxide in food packaging: Electric and dielectric characterization

Wheat gluten, a bio-polymer to monitor carbon dioxide in food packaging: Electric and dielectric characterization

Carbon dioxide sensors for intelligent food packaging applications

Electrochemical Sensors: Fundamentals, Key Materials, and Applications

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