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Titolo:
Oxygen transport at the LaMnO3 film/yttria-stabilized zirconia interface under different cathodic overpotentials by secondary ion mass spectrometry
Autore:
Horita, T; Yamaji, K; Sakai, N; Yokokawa, H; Kato, T;
Indirizzi:
Natl Inst Mat & Chem Res, Tsukuba, Ibaraki 3058565, Japan Natl Inst Mat & Chem Res Tsukuba Ibaraki Japan 3058565 aki 3058565, Japan Electrotech Lab, Tsukuba, Ibaraki 3058568, Japan Electrotech Lab Tsukuba Ibaraki Japan 3058568 uba, Ibaraki 3058568, Japan
Titolo Testata:
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
fascicolo: 5, volume: 148, anno: 2001,
pagine: J25 - J30
SICI:
0013-4651(200105)148:5<J25:OTATLF>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
CHEMICAL THERMODYNAMIC CONSIDERATIONS; PEROVSKITE OXIDE ELECTRODES; SR-DOPED LAMNO3; AIR ELECTRODE; IMPEDANCE SPECTROSCOPY; FUEL-CELLS; REDUCTION; DIFFUSION; KINETICS; LA1-XSRXMNO3;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
32
Recensione:
Indirizzi per estratti:
Indirizzo: Horita, T Natl Inst Mat & Chem Res, Tsukuba, Ibaraki 3058565, Japan Natl Inst Mat & Chem Res Tsukuba Ibaraki Japan 3058565 5, Japan
Citazione:
T. Horita et al., "Oxygen transport at the LaMnO3 film/yttria-stabilized zirconia interface under different cathodic overpotentials by secondary ion mass spectrometry", J ELCHEM SO, 148(5), 2001, pp. J25-J30

Abstract

Oxygen transport under different cathodic overpotentials was investigated at the LaMnO3 film/Y2O3 stabilized ZrO2 interface. A stable isotope oxygen (O-18) was adopted as a diffusion marker at 1073 K under cathodic polarization, and the quenched samples were analyzed by secondary ion mass spectrometry. The O-18 diffusion profiles indicate the higher diffusivity of O-18 inLaMnO3 film with the higher cathodic overpotentials. The introduction of oxygen vacancies by the cathodic polarization can change the diffusion profiles of O-18 in the LaMnO3 film. The diffusion profiles of oxygen in LaMnO3 film under the cathodic polarization were calculated from the literature data of oxygen content in LaMnO3 as a first estimation. The calculated diffusion profiles showed a similar trend with the measured ones, but different concentration in the LaMnO3 film under the higher polarization. (C) 2001 TheElectrochemical Society.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 07/08/20 alle ore 11:42:51