Improved Electrodes for Zirconia Oxygen Sensor

氧化锆氧传感器的改进电极

• 批准号: 63550485
• 负责人: KANEKO Hiroyuki
• 金额: $ 1.54万
• 依托单位: Akita University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1988
• 资助国家: 日本
• 起止时间: 1988 至 1990
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-63550485/
• 关键词: Oxygen Sensor; Zirconia; Solid Electrolyte; Platinum; Lanthanum Manganite; Rare Earth Oxide; Noble Metal; Electrode Reaction; 配素センサ-; 希土類酸化物; 複素インピ-ダンス; ガス電極; 酸素センサー; パラジウム; ロジウム

In order to survey good electrodes for zirconia oxygen sensors, electrode characteristics of several noble metals (Pt, Rh, Pd, Au and Ag), several rare earth oxides (Tb_4O_7, CeO_2, Pr_6O_<11> and Ca-doped lanthanum manganite (La_<1-x>Ca_xMnO_3 : X=0, 0.1, 0.2) were investigated using the complex impedance spectroscopy in the temperature range, 200-1400 ^ﾟC and in the oxygen pressure range, 10^<-6>-1 atm. At high temperatures, Pt has good electrode characteristics, and, on the other hand, at low temperatures, Ag has excellent electrode characteristics. Rh and Pd acted as oxide electrodes at high oxygey pressures or ta low temperatures. Pr_6O_<11> showed the best electrode property of the rare earth oxides examined. Electrode characteristics of Pr_6O_<11> and its bonding property with yttria-stabilized zirconia (YSZ) was improved by adding Pt powder. Electrode characteristics of La_<1-x>Ca_xMnO_3 were improved with increasing Ca concentration, because of low reactivity with YSZ.

为了寻找适合氧化锆氧传感器的电极，采用复阻抗谱法研究了几种贵金属（Pt、Rh、Pd、Au和Ag）、几种稀土氧化物（Tb_4O_7、CeO_2、Pr_6O_<11>）和掺钙锰酸镧（La_<1-x>Ca_xMnO_3: X= 0,0.1, 0.2）在200 ~ 1400 ^ C和10^<-6>- 1atm的电极特性。在高温下，Pt具有良好的电极特性，另一方面，在低温下，Ag具有优异的电极特性。Rh和Pd在高氧压力和低温下充当氧化物电极。Pr_6O_<11>的电极性能最好。通过添加Pt粉，改善了Pr_6O_<11>的电极特性及其与钇稳定氧化锆（YSZ）的键合性能。La_<1-x>Ca_xMnO_3的电极特性随着Ca浓度的增加而改善，因为与YSZ的反应性较低。

项目成果

金児紘征: "Electrical Conductivities of Several Zirconia Eolid Electrolyteas at Low Temperatures"

Hiroyuki Kaneko：“几种氧化锆干固体电解质在低温下的电导率”

Hiroyuki Kaneko: "Reaction of La_<1ーX> CaxMnO_3 Cathode with YSZ and Its Inflvence on the Electrode Characteristics" Proceedings of the Second International Symposium on Solid Oxide Fuel Cells,Athens,July 2ー5. (1991)

Hiroyuki Kaneko：“La_<1-X> CaxMnO_3 阴极与 YSZ 的反应及其对电极特性的影响”，第二届国际固体氧化物燃料电池研讨会论文集，雅典，1991 年 7 月 2-5 日。

金児 紘征: "ジルコニア酸素センサ-用貴金属電極の複素 インピ-ダンス測定" 秋田大学鉱山学部研究報告. 9. 33-40 (1989)

Hiroyuki Kaneko：“氧化锆氧传感器的贵金属电极的复杂阻抗测量”秋田大学矿业学院的研究报告 9. 33-40 (1989)。

Hiroyuki Kaneko: "Electrode Characteistics of Pt Paste Electrode on Stallized Zirconia" Journal of Electroanlytical Chemistry.

Hiroyuki Kaneko：“稳定氧化锆上铂糊电极的电极特性”电分析化学杂志。

金児紘征: 秋田大学鉱山学部研究報告. 9. 33-40 (1988)

Hiroyuki Kanego：秋田大学矿业学院研究报告。9. 33-40 (1988)。