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Titolo:
PREPARATION OF AN NA3ZR2SI2PO12-SODIUM ALUMINOSILICATE COMPOSITE AND ITS APPLICATION AS A SOLID-STATE ELECTROCHEMICAL CO2 GAS SENSOR
Autore:
NAKAYAMA S; SADAOKA Y;
Indirizzi:
SHINAGAWA REFRACTORIES CO LTD,NEW MAT RES CTR BIZEN 705 JAPAN EHIME UNIV,FAC ENGN,DEPT APPL CHEM MATSUYAMA EHIME 790 JAPAN
Titolo Testata:
Journal of materials chemistry
fascicolo: 5, volume: 4, anno: 1994,
pagine: 663 - 668
SICI:
0959-9428(1994)4:5<663:POANAC>2.0.ZU;2-J
Fonte:
ISI
Lingua:
ENG
Soggetto:
IONIC-CONDUCTIVITY; ELECTRICAL-CONDUCTIVITY; NA3YSI3O9; GLASSES; SYSTEM;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
11
Recensione:
Indirizzi per estratti:
Citazione:
S. Nakayama e Y. Sadaoka, "PREPARATION OF AN NA3ZR2SI2PO12-SODIUM ALUMINOSILICATE COMPOSITE AND ITS APPLICATION AS A SOLID-STATE ELECTROCHEMICAL CO2 GAS SENSOR", Journal of materials chemistry, 4(5), 1994, pp. 663-668

Abstract

A composite of sodium aluminosilicate and NaZr2Si2PO12 has been examined as a dense solid-state sodium-ion conductor. For the composite sintered at 1050-degrees-C, the electrical properties are mainly based onthose of NaZr2Si2PO12. When the composite was sintered at a higher temperature, the activation energy of the resistance increased to ca. 55kJ mol-1 and the densification was well progressed with the formationof small zirconia particles. A good junction between the composite and Y-stabilized zirconia was achieved when the sintering was carried out at greater-than-or-equal-to 1175-degrees-C. The formation of zirconia particles in the composite layer resulted in an enhancement of the mechanical strength at the junction. By using the ceramics, a solid-state electrochemical CO2 sensor with an Na2CO3 layer was fabricated. Whilst the sensitivity of this sensor to CO2 was slightly influenced by the coexistence of the water vapour in the test gas, a good sensing characteristic based on two-electron electrochemical reaction was confirmed.

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Documento generato il 28/03/20 alle ore 23:38:23