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Titolo:
Potentiometric Cl-2 gas sensor using a Na+ conducting composite NASICON-40wt % (Na2O-Al2O3-4SiO2) solid electrolyte
Autore:
Aono, H; Sadaoka, Y;
Indirizzi:
Ehime Univ, Fac Engn, Dept Mat Sci & Engn, Matsuyama, Ehime 7908577, JapanEhime Univ Matsuyama Ehime Japan 7908577 Matsuyama, Ehime 7908577, Japan
Titolo Testata:
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
fascicolo: 11, volume: 147, anno: 2000,
pagine: 4363 - 4367
SICI:
0013-4651(200011)147:11<4363:PCGSUA>2.0.ZU;2-Y
Fonte:
ISI
Lingua:
ENG
Soggetto:
CHLORINE GAS; STABILIZED ZIRCONIA; DESIGN;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
16
Recensione:
Indirizzi per estratti:
Indirizzo: Aono, H Ehime Univ, Fac Engn, Dept Mat Sci & Engn, Matsuyama, Ehime 7908577, Japan Ehime Univ Matsuyama Ehime Japan 7908577 ma, Ehime 7908577, Japan
Citazione:
H. Aono e Y. Sadaoka, "Potentiometric Cl-2 gas sensor using a Na+ conducting composite NASICON-40wt % (Na2O-Al2O3-4SiO2) solid electrolyte", J ELCHEM SO, 147(11), 2000, pp. 4363-4367

Abstract

A composite Na+ conductor of polycrystalline NASICON mixed with glassy Na2O-Al2O3-4SiO(2) (40 wt%) was investigated and used for a Cl-2 gas sensor. The densification of the solid electrolyte was improved by the addition of the glassy material. The sensor probe using the composite electrolyte and RuO2 + NaCl (1:1) measuring electrode produced a rapid electromotive force (EMF) change for the Cl-2 gas concentration below 10 ppm at above 450 degreesC. For the low temperature of 400 degreesC, a slow EMF response was obtained due to the side reaction between the Cl-2, gas and Na2O on the solid electrolyte and/or slow Cl-2, reduction to Cl- ion on the electrode. This sensor EMF value in air was only slightly influenced by the changing of the O-2 or CO2 gas concentration. (C) 2000 The Electrochemical Society. S0013-4651(00)04-083-0. All nights reserved.

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Documento generato il 03/04/20 alle ore 19:39:32