Solid electrolytes for gas sensors and fuel cells applications

Paściak, G.; Prociów, K.; Mielcarek, W.; Górnicka, B.; Mazurek, B.

doi:10.1016/s0955-2219(01)00132-7

Cited by 35 publications

(23 citation statements)

References 7 publications

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“…At low temperatures 400-600 • C, the well resolved semicircular arc appears similar to impedance spectra of typical superionic conductors (for example, stabilized ZrO 2 and BICUVOX) [13,14]. This arc is attributed to bulk properties (probably ionic O 2− conductivity) of nanoceramic and diminishes with increase of temperature.…”

Section: Resultssupporting

confidence: 53%

Preparation and conductivity measurement of Eu doped BaTiO3 nanoceramic

Hreniak¹,

Stręk²,

Chmielowiec³

et al. 2006

Journal of Alloys and Compounds

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Section: Resultssupporting

confidence: 53%

Preparation and conductivity measurement of Eu doped BaTiO3 nanoceramic

Hreniak¹,

Stręk²,

Chmielowiec³

et al. 2006

Journal of Alloys and Compounds

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“…The conductivity typically reaches a maximum and then decreases at high dopant levels due to association among ionic point defects, which decreases their mobility [39]. Although yttria-stabilized zirconia (YSZ) is the most common oxygen ion-conducting electrolyte, certain new, highly conducting electrolytes -such as lanthanide aluminosilicate compounds [40] and bismuthvanadium-based oxides [41][42][43] -have recently been reported. A solid electrolyte material used in a chemical sensor must have very low electronic conductivity, because electronic conduction through the electrolyte, depending on the reversibility of the electrode, can affect the electrode potential.…”

Section: Electrolytesmentioning

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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“…Some of bismuth-containing solid electrolytes which are characterized by high ionic conductivity may exhibit also gas sensing properties [21] or be tested as solid membranes for gas separation [22]. Such materials in contact with aqueous electrolytes may show completely new features.…”

Section: Introductionmentioning

confidence: 99%

Does the low optical band gap of yellow Bi3YO6 guarantee the photocatalytical activity under visible light illumination?

Trzciński

Szkoda

Herman

et al. 2018

J Solid State Electrochem

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Bi 3 YO 6 , which is known as an ionic conductor, was tested here as an electrode and photoanode in contact with aqueous electrolytes. Bi 3 YO 6 was deposited onto the Pt substrate and the such prepared electrode was polarized in various aqueous electrolytes. The optical energy band gap of the material equal to 1.89 eV was determined using the Kubelka-Munk function resulting from the UV-Vis spectrum (allowed indirect transition) and also was calculated using the semi-empirical PM7 method (3.38 eV of HOMO-LUMO energy gap). Despite the yellow color of Bi 3 YO 6 , the tested material exhibits photoelectroactivity only in the UV range of electromagnetic radiation. The anodic photocurrent characteristic for n-type metal oxide semiconductors was recorded. The electrode exhibits diffusion-controlled cathodic activity while polarized in chloride-free aqueous electrolytes.

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Solid electrolytes for gas sensors and fuel cells applications

Cited by 35 publications

References 7 publications

Preparation and conductivity measurement of Eu doped BaTiO3 nanoceramic

Preparation and conductivity measurement of Eu doped BaTiO3 nanoceramic

Electrochemical Sensors: Fundamentals, Key Materials, and Applications

Does the low optical band gap of yellow Bi3YO6 guarantee the photocatalytical activity under visible light illumination?

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