SOLID ELECTROLYTE NO2 SENSORS FITTED WITH SODIUM-NITRATE AND OR BARIUM NITRATE ELECTRODES

被引:48
作者
SHIMIZU, Y [1 ]
OKAMOTO, Y [1 ]
YAO, S [1 ]
MIURA, N [1 ]
YAMAZOE, N [1 ]
机构
[1] KYUSHU UNIV,GRAD SCH ENGN SCI,DEPT MAT SCI & TECHNOL,KASUGA,FUKUOKA 816,JAPAN
来源
DENKI KAGAKU | 1991年 / 59卷 / 06期
关键词
NO2; SENSOR; NA+ CONDUCTOR; BA-BETA BETA-ALUMINA; BA(NO3)2;
D O I
10.5796/kogyobutsurikagaku.59.465
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
Solid electrolyte-based electrochemical elements fabricated with beta/beta" -alumina (and NASICON) and nitrate electrodes were tested for the detection of NO2 in the range 10-200 ppm. The element fitted with an NaNO3 sensing electrode exhibited excellent performance for the potentiometric sensing of NO2 at 200-degrees-C, but its operation was limited up to the melting point of NaNO3 (307-degrees-C). The use of a binary nitrate electrode of Ba(NO3)2-NaNO3 made it possible to stand operation at higher temperature up to 500-degrees-C without deteriorating the sensing performance. A Ba(NO3)2 electrode, when combined with a barium-ion conductor, was found to give excellent NO2 sensing properties. A possibility of the amperometric sensing of NO2 was also demonstrated experimentally.
引用
收藏
页码:465 / 472
页数:8
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