Design of High-Performance Environmental Gas Sensors Using Solid Electrolytes and Multi-Component Auxiliary Electrodes

采用固体电解质和多组分辅助电极的高性能环境气体传感器的设计

• 批准号: 03453090
• 负责人: YAMAZOE Noboru
• 金额: $ 4.67万
• 依托单位: KYUSHU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1991
• 资助国家: 日本
• 起止时间: 1991 至 1992
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-03453090/
• 关键词: Solid Electolyte; Gas Sensor; Auxiliary Electrode; NO_x Sensor; CO_2 Sensor; SO_x Sensor; NO_xセンサ; SO_xセンサ; 固体電解質ガスセンサ; 環境汚染ガスセンサ

Sensing properties of solid electrolyte oxygenic gas sensor were greatly improved by using multi-component auxiliary electrode. 1. The use of a binary nitrate electrode of NaNO_3-Ba(NO_3)_2 for solid electrolyte NO_2 sensor made it possible to stand operation at higher temperature up to 500ﾟC,as well as to suppress the interference of water vapor. An NO_2 sensor using Ba(NO_3)_2 auxiliary electrode and Ba-beta/beta"-alumina was found to show quicker responses and to stand higher temperature operation. A NASICON-based solid electrolyte device fitted with an NaNO_2 auxiliary electrode showed excellent sensing characteristics to NO and NO_2 in air,i.e., the electromotive force (EMF) followed the Nernt's equation for 1 - 800 ppm NO and 0.1 - 200 ppm NO_2 at temperatures of 150-240ﾟC. The response of these sensors were found to be totally independent of coexisting oxygen. 2. A NASICON-based CO_2 sensor was greatly improved in response and water vapor-resistance by using binary carbonate ele … More ctrodes of Na_2CO_3-BCO_3(B=Ca,Sr,Ba). These sensors could respond very well to CO_2 in air over a wide temperature range of 270-600ﾟC. The CO_2 sensor was further improved in stability by using Li-based binary carbonate electrodes of Li_2CO_3-BCO_3(B=Ca,Sr,Ba). The sensor responses, EMF, to varying partial pressure of CO_2 were in accordance with a 2-electron reaction of CO_2, while the response to a fixed P_<CO2> was found to be almost independent of partial pressure of O_2 at temperatures above 450ﾟC, while at 305ﾟC and below, it dependent on P_<O2> in a manner similar to a 2- electron reaction of O_2. Thus, two-types of sensing electrode reactions including peroxycarbonate or peroxide were indicated to occur depending on working temperature. 3. Electrochemical cells using MgO-stabilized zirconia tube coated with metal sulphates were found to exhibit fairly good sensing properties to 20-200 ppm SO_2 in air at 650-800ﾟC. SO_x sensor using Li_2SO_4-CaSO_4-SiO_2 auxiliary electrode showed quicker response, 90% response and 90% recovery time to 20 ppm SO_2 at 650ﾟC were 10_s and 7 min, respectively. This sensor exhibits excellent selectivity and good stability in long-term operation. Less

采用多组元辅助电极，大大提高了固体电解质含氧气体传感器的敏感性能。1.采用NaNO_3-Ba（NO_3）_2二元硝酸根电极作为固体电解质NO_2传感器，可以在500 ℃以下的高温下工作，并能抑制水蒸气的干扰。用Ba（NO_3）_2辅助电极和Ba-β/β”-Al_2O_3作NO_2传感器，响应速度快，耐高温。以NASICON为基片，配以NaNO_2辅助电极的固体电解质器件对空气中的NO和NO_2具有良好的传感特性，在150-240 ℃下，NO浓度为1 ~ 800 ppm，NO_2浓度为0.1 ~ 200 ppm时，电动势符合Nernt方程。这些传感器的响应被发现是完全独立的共存的氧气。2.采用二元碳酸盐电解液，使NASICON型CO_2传感器的响应特性和耐水汽性能得到了很大的改善 ...更多信息 Na_2CO_3-BCO_3（B=Ca，Sr，Ba）电极。这些传感器在270-600 ℃的温度范围内对空气中的CO_2有很好的响应。采用Li_2CO_3-BCO_3（B=Ca，Sr，Ba）二元碳酸盐电极，进一步提高了CO_2传感器的稳定性。传感器对CO_2分压变化的响应符合CO_2的双电子反应，而对固定的P_2的响应在<CO2>450 ℃以上几乎不受O_2分压的影响，在305 ℃及以下则<O2>类似于O_2的双电子反应依赖于P_2。因此，两种类型的传感电极反应，包括过氧碳酸盐或过氧化物被指示发生取决于工作温度。3.用氧化镁稳定的氧化锆管作电极，在650-800 ℃下，对空气中20- 200ppmSO_2有较好的敏感性能。采用Li_2SO_4-CaSO_4-SiO_2辅助电极的SO_x传感器响应速度快，在650 ℃时对20 ppm的SO_2的90%响应时间和90%恢复时间分别为10 s和7 min。该传感器具有良好的选择性和长期运行的稳定性。少

项目成果

N.Miura: "High-Performance Solid-Electrolyte Carbon Dioxede Sensor with a Binary Carbonate Electrode" Sensors and Actuators B. 9. 165-170 (1992)

N.Miura：“带有二元碳酸盐电极的高性能固体电解质二氧化碳传感器”传感器和执行器 B.9.165-170 (1992)

Y. Yan, Y. Shimizu, N. Miura, and N. Yamazoe: "Solid-State Sensor for Sulfur Oxides Based on Stabilized Zirconia and Metal Sulphate" Chemistry Letters. 1992. 635-638 (1992)

Y. Yan、Y. Shimizu、N. Miura 和 N. Yamazoe：“基于稳定氧化锆和金属硫酸盐的硫氧化物固态传感器”化学快报。

N.Miura: "HighーPerformance Solid Electrolyte CO_2 Sensor Fitted with Binary Carbonate Electrode" Digest of Technical Papers,Int.Conf.SolidーState Sensors and Actuators,San Francisco,Transducer's 91. 558-561 (1991)

N. Miura：“配备二元碳酸盐电极的高性能固体电解质 CO_2 传感器”技术论文文摘，国际固态传感器和执行器，旧金山，Transducers 91. 558-561 (1991)

N.Miura: "CarbonDioxide Sensor Using Sodium Ion Conductor and Binary Carbonate Auxiliary Electrode" J.Electrochem.Soc.(1992)

N.Miura：“使用钠离子导体和二元碳酸盐辅助电极的二氧化碳传感器”J.Electrochem.Soc.(1992)

Y.Yan: "Solid-State Sensor for Sulfur Oxides Based on Stabilized Zirconia and Metal Sulphate" Chemistry Letters. 1992. 635-638 (1992)

Y.Yan：“基于稳定氧化锆和金属硫酸盐的硫氧化物固态传感器”化学快报。