Development of Solid Electrolyte ECP Sensor for High Temperature Water System

高温水系统固体电解质ECP传感器的研制

• 批准号: 08650828
• 负责人: HARA Nobuyoshi
• 金额: $ 1.47万
• 依托单位: TOHOKU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08650828/
• 关键词: Electrochemical potential sensor; High temperature water; Yttria stabilized zirconia; Solid electrolyte sensor

A newly designed electrochemical potential (ECP) sensor has been developed for electrochemical measurement in high temperature water systems and its thermodynamic response has been confirmed at temperatures up to 523K.The principal findings of this work are summerized as follows.1.A solid electrolyte ECP sensor was designed and fabricated. This sensor is composed of an yttria stabilized zirconia (YSZ,ZrO_2-8mol%Y_2 O_3) disk electrode with a sputter-deposited Ni・NiO composite film on the backside, an asbestos plug soaked with a neutral phosphate buffer solution as an internal solution, and an oxidized zircaloy-4 body.2.The potential of the solid electrolyte ECP sensor with respect to an Ag/AgCl (0.1kmol・m^<-3>KCl) internal refernce electrode was independent of solution pH at temperatures over the range of 473K to 523K.3.The ECP sensor had the following linear relationship with temperature in the range of 473 to 523K :E_<YSZ/NiO>=2395-5.37T/mV vs.SHE4.The long-term stability of the sensor was confirmed through the potential measuremet combined with Pt-hydrogen electrode.5.Using the solid electrolyte ECP sensor, the measurement of anodic polarization curves of SUS 304 stainless steel in a 0.5kmol・m^<-3>Na_2SO_4 solution at temperatures up to 563K has been performed. Anodic polarization curves measured with the ECP sensor coincided with those with the Ag/AgCl internal reference electrode in the temperature range from 473 to 563K.

已经开发了一种新设计的电化学电位（ECP）传感器，用于在高温水系统中进行电化学测量，并且在高达523K的温度下已确认其热力学响应。该工作的主要发现如下。1.a固体电解质ECP ECP传感器的设计和制造。该传感器由Yttria稳定的锆石（YSZ，Zro_2-8mol％y_2 o_3）磁盘电极组成，带有溅射沉积的Ni ni ni ni ni ni ni nio复合膜，上面是一种石棉，用中性的磷酸盐溶液浸泡，固定溶液与氧化液的固体和氧化量。 AG/AGCL（0.1 kmol ・M^<-3> kCl）内部参考电极在温度下独立于473K至523K的温度下的溶液pH。3。ECP传感器在473至523K范围内具有以下线性关系，范围为473至523K：E_ <ysz/nio> = 2395-5.37t/mvssy。测量值与Pt-Hydrogen电极结合。5。使用固体电解质ECP传感器，在0.5 kmol的0.5kmol ・M^<-3> Na_2SO_4溶液中测量SUS 304不锈钢的阳极偏振曲线，以高达563K的速度进行了测量。用ECP传感器测量的阳极极化曲线与在473至563K温度范围内具有AG/AGCL内部参考电极的偏振曲线相吻合。

项目成果

藤木 泰史: "高温高圧水用固体電解質型照合電極の開発" 材料と環境. 47(印刷中). (1998)

Yasushi Fujiki：“高温高压水固体电解质参比电极的开发”材料与环境47（出版中）。

Yasufumi Fujiki: "Development of Solid Electrolyte Reference Electrode for High temperature Water System" Zairyo-To-Kankyo. 47 (in press).

Yasufumi Fujiki：“高温水系统用固体电解质参比电极的开发”Zairyo-To-Kankyo。