Grain–bulk versus grain–boundary sensitivities to redox reaction in yttria-doped ceria ceramics viewed from impedance spectroscopy

2007 ◽  
Vol 89 (2) ◽  
pp. 509-515 ◽  
Author(s):  
J.-C. M’Peko ◽  
M.F. De Souza ◽  
C.L. Da Silva ◽  
D.P.F. De Souza
Keyword(s):  
Impedance Spectroscopy ◽  
Grain Boundary ◽  
Redox Reaction ◽  
Doped Ceria ◽  
Grain Bulk ◽  
Yttria Doped Ceria

scholarly journals Grain boundary blocking of ionic conductivity in nanocrystalline yttria-doped ceria thin films

2015 ◽  
Vol 104 ◽  
pp. 45-48 ◽  
Author(s):  
Jihwan An ◽  
Jiwoong Bae ◽  
Soonwook Hong ◽  
Bongjun Koo ◽  
Young-Beom Kim ◽  
...  
Keyword(s):  
Thin Films ◽  
Ionic Conductivity ◽  
Grain Boundary ◽  
Doped Ceria ◽  
Yttria Doped Ceria

Impedance spectroscopy of the Pt/Yttria doped ceria interface

1983 ◽  
Vol 9-10 ◽  
pp. 973-977 ◽  
Author(s):  
S.P.S Badwal ◽  
H.J de Bruin ◽  
A.D Franklin
Keyword(s):  
Impedance Spectroscopy ◽  
Doped Ceria ◽  
Yttria Doped Ceria

Impedance Spectroscopy and Hall Measurements on CdTe Thin Polycrystalline Films

2001 ◽  
Vol 668 ◽  
Author(s):  
A.S. Gilmore ◽  
V. Kaydanov ◽  
T.R. Ohno ◽  
D. Grecu ◽  
D. Rose
Keyword(s):  
Impedance Spectroscopy ◽  
Grain Boundary ◽  
Carrier Concentration ◽  
Bulk Material ◽  
Wide Frequency Range ◽  
Frequency Range ◽  
Mobility Data ◽  
Thin Polycrystalline ◽  
Grain Bulk ◽  
Expected Increase

ABSTRACTMeasurements of film impedance in a wide frequency range (impedance spectroscopy, IS) were used to evaluate the grain boundary (GB) and the bulk material (B) resistance. Undoped films demonstrated very low carrier concentration and negligible GB resistance, both due to depletion of the bulk material by the GB deep states. Doping the film with Cu led to a significant increase in the GB resistance, in addition to the expected increase in carrier concentration. Illumination of doped films reduced GB resistance by orders of magnitude. This effect was used for the analysis of Hall concentration and Hall mobility data, aimed at exclusion of GB influence on measured parameters, and was used to determine the carrier concentration and mobility in the grain bulk. Hall studies on undoped films under illumination were also used to estimate the lifetime of the photogenerated carriers.

Synthesis, sintering and impedance spectroscopy of 8mol% yttria-doped ceria solid electrolyte

2004 ◽  
Vol 130 (1-2) ◽  
pp. 15-21 ◽  
Author(s):  
S.K Tadokoro ◽  
T.C Porfı́rio ◽  
R Muccillo ◽  
E.N.S Muccillo
Keyword(s):  
Impedance Spectroscopy ◽  
Solid Electrolyte ◽  
Doped Ceria ◽  
Yttria Doped Ceria

Vacancy and Cation Distribution in Yttria-Doped Ceria:  An89Y and17O MAS NMR Study

2007 ◽  
Vol 19 (23) ◽  
pp. 5742-5747 ◽  
Author(s):  
Namjun Kim ◽  
Jonathan F. Stebbins
Keyword(s):  
Cation Distribution ◽  
Mas Nmr ◽  
Doped Ceria ◽  
Nmr Study ◽  
Yttria Doped Ceria

An yttria-doped ceria-based oxygen sensor with solid-state reference

2004 ◽  
Vol 103 (1-2) ◽  
pp. 178-183 ◽  
Author(s):  
B. Elyassi ◽  
N. Rajabbeigi ◽  
A. Khodadadi ◽  
S.S. Mohajerzadeh ◽  
M. Sahimi
Keyword(s):  
Solid State ◽  
Oxygen Sensor ◽  
Doped Ceria ◽  
State Reference ◽  
Yttria Doped Ceria

scholarly journals Влияние влажности на электроперенос протонпроводящих перовскитов AZr-=SUB=-0.95-=/SUB=-Sc-=SUB=-0.05-=/SUB=-O-=SUB=-3-alpha-=/SUB=- (A=Ca, Sr, Ba) в окислительной атмосфере

2019 ◽  
Vol 61 (4) ◽  
pp. 645
Author(s):  
В.Б. Балакирева ◽  
В.П. Горелов ◽  
Л.А. Дунюшкина ◽  
А.В. Кузьмин
Keyword(s):  
Impedance Spectroscopy ◽  
Grain Boundary ◽  
General Formula ◽  
Considerable Effect ◽  
Humid Atmosphere ◽  
Proton Conducting ◽  
Hydronium Ion ◽  
The Impact

AbstractThe total, bulk, and grain boundary conductivities of proton-conducting zirconates of general formula AZr_0.95Sc_0.05O_3 – α (AZS), where A = Ca, Sr, Ba, are measured in air with different humidity levels. The conductivity is measured using the four-probe dc method (600–900°C) and impedance spectroscopy (30–800°C). The impact of humid atmosphere on the total, bulk, and grain boundary conductivities of the AZS system is studied at different humidity levels: $${{p}_{{{{{\text{H}}}_{{\text{2}}}}{\text{O}}}}}$$ = 0.04, 0.61, and 2.5 kPa. Humidity is found to have a considerable effect on the conductivity of our CaZS and BaZS at lower temperatures, suggesting the likelihood of hydronium ion-mediated transport.

Microstructure evolution of yttria-doped ceria in reducing atmosphere

2013 ◽  
Vol 50 ◽  
pp. 494-497 ◽  
Author(s):  
Zhi-Peng Li ◽  
Toshiyuki Mori ◽  
Graeme John Auchterlonie ◽  
Jin Zou ◽  
John Drennan
Keyword(s):  
Microstructure Evolution ◽  
Doped Ceria ◽  
Reducing Atmosphere ◽  
Yttria Doped Ceria

scholarly journals Separating bulk from grain boundary Li ion conductivity in the sol–gel prepared solid electrolyte Li1.5Al0.5Ti1.5(PO4)3

2015 ◽  
Vol 3 (42) ◽  
pp. 21343-21350 ◽  
Author(s):  
Stefan Breuer ◽  
Denise Prutsch ◽  
Qianli Ma ◽  
Viktor Epp ◽  
Florian Preishuber-Pflügl ◽  
...  
Keyword(s):  
Impedance Spectroscopy ◽  
Grain Boundary ◽  
Ion Transport ◽  
Solid Electrolyte ◽  
Transport Properties ◽  
Low Temperatures ◽  
Sol Gel ◽  
Ion Conductivity ◽  
Li Ion ◽  
Ceramic Electrolytes

Impedance spectroscopy measurements down to very low temperatures allowed for resolving bulk ion transport properties in highly conducting ceramic electrolytes.

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