Development of Dissolved Hydrogen Sensors for High Temperature Water Systems

高温水系统溶解氢传感器的开发

• 批准号: 09555213
• 负责人: HARA Nobuyoshi
• 金额: $ 7.81万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09555213/
• 关键词: Dissolved hydrogen sensor; High-temperature water; Yttria stabilized zirconia; Solid electrolyte sensor; Nuclear power generator; hydrogen permeation; 水素センサ

For in situ measurements of the concentration of hydrogen in aqueous solutions at elevated temperatures, a newly designed hydrogen sensor, which is based on an electrochemical cell employing a yttria-stabilized zirconia (YSZ) solid electrolyte and a noble metal working electrode, has been developed. The hydrogen response of the sensor has been examined at temperatures as high as 300℃. The principal findings of this work are summarized as follows :1. YSZ oxygen sensors equipped with Ag powder or thin film electrodes were fabricated. The thin film electrodes were prepared by ion-beam-sputter (IBS) deposition. The sensors showed a fast, Nernstian response to changes in oxygen partial pressure at temperatures of 200℃ to 300℃, indicating that both the Ag powder and thin film electrodes can be used as an internal reference electrode of hydrogen sensor.2. Hydrogen sensors equipped with painted or IBS-deposited Pt and Pd were fabricated and the response to hydrogen in NィイD22ィエD2HィイD22ィエD2 gas … More mixtures was examines. The response rate in the gas mixtures was faster for sensors employing thin IBS-Pt and -Pd electrodes compared with those employing thick painted electrodes. However, the hydrogen electrode reaction in aqueous solutions was not affected by the difference in the preparation method of the electrodes. The corrosion resistance of Pt in high temperature aqueous solution was higher than that of Pd.3. Hydrogen sensors employing a YSZ tube, a Ag-OィイD22ィエD2 internal reference electrode, and a hydrogen-sensitive Pt working electrode covered with a PTFE diffusion membrane has been fabricated and the response to hydrogen in aqueous solutions was examined at temperatures over the range of 200℃ to 300℃. The sensors displayed rapid and Nernstian responses to changes in hydrogen concentration in the temperature range of 250℃ and 300℃. Oxygen in solution had little effect on the potential of the sensor, when the concentration of oxygen is lower than that of hydrogen. The potential of the sensor was independent of the solution pH. Less

为了在高温下原位测量水溶液中氢的浓度，开发了一种基于电化学电池的新型氢传感器，该电池采用钇稳定氧化锆（YSZ）固体电解质和贵金属工作电极。在高达300℃的温度下测试了传感器的氢响应。本文的主要研究结果总结如下：1。制备了YSZ型氧传感器，其电极分别为银粉电极和薄膜电极。采用离子束溅射（IBS）沉积法制备薄膜电极。在200 ~ 300℃的温度下，传感器对氧分压变化有快速的能态响应，表明银粉电极和薄膜电极均可作为氢气传感器的内参比电极。氢传感器配备画或IBS-deposited Pt和Pd是捏造的,氢的反应NィイD22摊位ィエD2HィイD22摊位ィエD2气体 ... 检查更多的混合物。与使用厚涂电极的传感器相比，使用薄IBS-Pt和-Pd电极的传感器在气体混合物中的响应速度更快。而氢电极在水溶液中的反应不受电极制备方法不同的影响。Pt在高温水溶液中的耐蚀性高于Pd.3。氢传感器采用YSZ管、Ag-OィイD22摊位ィエD2内部参比电极,和hydrogen-sensitive Pt工作电极覆盖着一层聚四氟乙烯氢扩散膜被伪造和响应在水溶液研究在温度超过200℃到300℃的范围。在250℃和300℃的温度范围内，传感器对氢气浓度的变化有快速的响应。当氧的浓度低于氢的浓度时，溶液中的氧对传感器电位的影响很小。传感器电位与溶液ph值无关

项目成果

Nobuyoshi Hara: "Development of Dissolved Hydrogen Sensors Based on Yttria-Stabilized Zirconia Solid Electrolyte with Noble Metal Electrodes"Journal of the Electrochemical Society. 144・12. 4152-4157 (1997)

原伸义：“基于氧化钇稳定氧化锆固体电解质和贵金属电极的溶解氢传感器的开发”电化学会杂志144・12（1997）。

Nobuyoshi Hara: "Oxygen Response of Yttria-Stabilized Zirconia Sensors in Gaseous and Aqueous Systems"Journal of the Electrochemical Society. 144・12. 4158-4160 (1997)

Nobuyoshi Hara：“气体和水系统中氧化钇稳定的氧化锆传感器的氧响应”电化学学会杂志 144・12（1997 年）。