In this review, microstructural properties, such as porosity, phase content, thermal expansion coefficient data, oxygen uptake and release data, and conducting properties of cermets consisting of Ag and LaGaO3 doped with Sr and Mg are presented and discussed with respect to their potential application in solid oxide fuel cells operating at temperatures of about 500–600°C.
IshiharaT., MatsudaH. and TakitaY.: Doped LaGaO3 Perovskite Type Oxide as a New Oxide Ionic Conductor. J. Am. Chem. Soc., 1994, 116, 3801–3803.
2.
FengM. and GoodenoughJ. B.: A Superior Oxide-ion Electrolyte. Eur. J. Solid State Inorg. Chem., 1994, 31, 663–672.
3.
EndoA., FukunagaH., WenC. and YamadaK.: Cathodic reaction mechanism of dense La0.6Sr0.4CoO3 and La0.81Sr0.09MnO3 electrodes for solid oxide fuel cells. Solid State Ionics, 2000, 135, 353–358.
4.
van RoosmalenJ. A. M. and CordfunkeE. H. P.: Chemical reactivity and interdiffusion of (La, Sr) MnO3 and (Zr, Y)O2, solid oxide fuel cell cathode and electrolyte materials. Solid State Ionics, 1992, 52, 303–312.
5.
CarterS., SelcukA., ChaterR. J., KajdaJ., KilnerJ. A. and SteeleB. C. H.: Oxygen transport in selected nonstoichiometric perovskite-structure oxides. Solid State Ionics, 1992, 53–56, 597–605.
6.
DusastreV. and KilnerJ. A.: Optimisation of composite cathodes for intermediate temperature SOFC applications. Solid State Ionics, 1999, 126, 163–174.
7.
OstergardM. J. L., ClausenC., BaggerC. and MogensenM.: Manganite-zirconia composite cathodes for SOFC: Influence of structure and composition. Electrochim. Acta, 1995, 40, 1971–1981.
8.
JuhlM., PrimdahlS., ManonC. and MogensenM.: Performance/structure correlation for composite SOFC cathodes. J. Power Sources 61. J. Power Sources, 1996, 61, 173–181.
9.
TannerC. W., FungK. Z. and VirkarA. V.: Dependence of polarization in anode-supported solid oxide fuel cells on various cell parameters. J. Electrochem. Soc., 1997, 144, 21–30.
10.
KenjoT. and NishiyaM.: LaMnO3 air cathodes containing ZrO2 electrolyte for high temperature solid oxide fuel cells. Solid State Ionics, 1992, 57, 95–302.
11.
ChenC. S., KruidhofH., BouwmeesterH. J. M., VerweijH. and BurggraffA. J.: Oxygen permeation through oxygen ion oxide-noble metal dual phase composites. Solid State Ionics, 1996, 86–88, 569–572.
12.
ChenC. S., BoukampB. A., BouwmeesterH. J. M., GaoG. Z., KruidhofH., WinnbustA. J. A. and BurggraffA. J.: Microstructural development, electrical properties and oxygen permeation of zirconia-palladium composites. Solid State Ionics, 1995, 76, 23–28.
13.
SasakiK., HosodaK., LanT. N., YasumotoK., WangS. and DokiyaM.: Ag–Zr(Sc)O2 cermet cathode for reduced temperature SOFCs. Solid State Ionics, 2004, 174, 97–102.
14.
HuH. and LiuM.: Silver-BaCe0.8Gd0.2O3 Composites as Cathode Materials for SOFCs Using BaCeO3-Based Electrolytes. J. Electrochem. Soc., 1996, 143, 859–864.
15.
WuZ. L. and LiuM.: Ag-Bi1.5 Y0.5O3 composite cathode materials for BaCe0.8Gd0.2O3-based solid oxide fuel cells. J. Am. Ceram. Soc., 1998, 81, 1215–1220.
16.
WangL. S. and BarnettS. A.: Ag-perovskite cermets for thin film solid oxide fuel cell air-electrode applications. Solid Sate Ionics, 1995, 76, 103–113.
17.
DattaP., MajewskiP. and AldingerF.: Synthesis and Characterization of Gadolinia Doped Ceria-Silver Cermet Cathode Material for Solid Oxide Fuel Cells. Mater. Chem. Phys., 2008, 107, 370–376.
18.
XiaC., ZhangY. and LiuM.: Composite cathode based on yttria stabilized bismuth oxide for low-temperature solid oxide fuel cells. Appl. Phys. Lett., 2003, 82, 901–903.
19.
XiaC. and LiuM.: Novel Cathodes for Solid Oxide Fuel Cells. Adv. Mater., 2002, 14, 521–523.
20.
CamarattaM. and WachsmanE.: Silver–bismuth oxide cathodes for IT-SOFCs: Part II – Improving stability through microstructural control. Solid State Ionics, 2007, 178, 1411–1418.
21.
JaiswalA. and WachsmanE. D.: Direct current bias studies on (Bi2O3)0.8(Er2O3)0.2 electrolyte and Ag-(Bi2O3)0.8(Er2O3)0.2 cermet electrode. Solid State Ionics, 2006, 177, 677–685.
22.
DattaP., BroninD. I., MajewskiP. and AldingerF.: Cermet cathodes for strontium and magnesium-doped LaGaO3-based solid oxide fuel cells. Mater. Chem. Phys., 2009, 114, 356–361.
23.
DattaP., MajewskiP. and AldingerF.: LaGaO3-based cermet for solid oxide fuel cell cathodes. J. Eur. Ceram. Soc., 2009, 29, 1469–1476.
24.
ShannonR. D.: Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides. Acta Crystallogr. A, 1976, 32A, 751–767.
25.
TjengL. H., MeindersM. B. J., van ElpJ., GhijsenJ. and SawatzkyG. A.: Electronic structure of Ag2O. Phys. Rev. B, 1990, 41B, 3190–3199.
26.
BoroninA. I., KoscheevS. V. and ZhidomirovG. M.: XPS and UPS study of oxygen states on silver. J. Electron Spectrosc. Relat. Phenom., 1998, 96, 43–51.
27.
LiW. X., StampflC. and SchefflerM.: Why is a Noble Metal Catalytically Active? The Role of the O-Ag Interaction in the Function of Silver as an Oxidation Catalyst. Phys. Rev. Lett., 2003, 90, 256102-1–256102-4.
28.
HammerB. and NorskovJ. K.: Why Gold is the noblest of all Metals. Nature, 1995, 376, 238–240.
29.
ChanK. S., MaL., JaenickeS., ChuahG. K. and LeeJ. Y.: Catalytic carbon monoxide oxidation over strontium, cerium and copper-substituted lanthanum manganates and cobaltates. Appl. Catal. A, 1994, 107A, 201–227.
30.
MaiA., TietzF. and StöverD.: Solid State Ionics, 2004, 173, 35–40.
31.
LiuM. and WuZ.: Solid State Ionics, 1998, 107, 105–110.
32.
SmithellsC. J. and BrandesE. A.: ‘Metals reference book’, 5th edn; 1976, London, Butterworths.
33.
KhanlouA. A., TietzF. and StöverD.: Solid State Ionics, 2000, 135, 543–547.