Calcium zirconate: preparation, properties and application to the solid oxide galvanic cells

Róg, G.; Dudek, Magdalena; Kozłowska-Róg, A.; Bućko, Mirosław M.

doi:10.1016/s0013-4686(02)00540-6

Cited by 63 publications

(10 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Analysis of this data indicated the introduction of calcia into CaZrO 3 caused an increase of cell parameters and cell volume compared to pure CaZrO 3 . These observations agreed with our previous results described in details for CaZrO 3 -based samples synthesized by solid state reaction or citrate method [11,12]. If one compares the cell volume values determined for nonstoichiometric CaZrO 3 gas-tight samples formed from the same powder, but sintered in different conditions (methods A and B, respectively), it can be seen that in comparison to starting CZ-51 powder or pressureless sintering a higher increase to the CaZrO 3 cell volume occurs with samples which are hot-pressed (method B).…”

Section: Resultssupporting

confidence: 93%

“…These results are in agreement with our former investigations carried out on samples prepared by solid state reaction or the citrate method. The introduction of excess calcia into the CaZrO 3 structure caused an increase in the concentration of oxygen vacancies compared with stoichiometric CaZrO 3 , which are responsible for higher oxygen ionic conductivity compared to stoichiometric CaZrO 3 [9,11].…”

Section: Resultsmentioning

confidence: 99%

“…The improvement of electrical conductivity in the CaZrO 3 with excess ZrO 2 samples, where 30 < x < 49 mol.%, was also noticed. In this case, an appearance as cubic calcia solid solution as better conductive phase than orthorhombic CaZrO 3 led to enhancement of ionic conductivity compared to monophase CaZrO 3 [11,12].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Some observations on synthesis and electrolytic properties of nonstoichiometric calcium zirconate

Dudek

Drożdż

2009

Journal of Alloys and Compounds

View full text Add to dashboard Cite

Section: Resultssupporting

confidence: 93%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Some observations on synthesis and electrolytic properties of nonstoichiometric calcium zirconate

Dudek

Drożdż

2009

Journal of Alloys and Compounds

View full text Add to dashboard Cite

“…This has led to the development of hydrogen sensors for molten aluminum. These sensors are based on proton-conducting oxides [423][424][425][426][427] although, as discussed above, at low oxygen partial pressures (as occur in molten aluminum) oxygen ion conduction can occur in these oxides [428,429]. This may lead to the sensor output being affected by the water vapor partial pressure.…”

Section: Log Current (A)mentioning

confidence: 99%

Electrochemical Sensors: Fundamentals, Key Materials, and Applications

Fergus

2009

Solid State Electrochemistry I

View full text Add to dashboard Cite

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

show abstract

“…The CaZrO 3 was applied in the e.m.f. measurements of oxide systems with very low equilibrium pressure of oxygen [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

The standard Gibbs free energy of formation of calcium chromium (III) oxide in the temperature range (1073 to 1273)K

Róg

Kozłowska-Róg

Dudek

2007

The Journal of Chemical Thermodynamics

View full text Add to dashboard Cite

Calcium zirconate: preparation, properties and application to the solid oxide galvanic cells

Cited by 63 publications

References 20 publications

Some observations on synthesis and electrolytic properties of nonstoichiometric calcium zirconate

Some observations on synthesis and electrolytic properties of nonstoichiometric calcium zirconate

Electrochemical Sensors: Fundamentals, Key Materials, and Applications

The standard Gibbs free energy of formation of calcium chromium (III) oxide in the temperature range (1073 to 1273)K

Contact Info

Product

Resources

About