A NEW INDICATOR ELECTRODE FOR OXYGEN SENSORS

被引：5

作者：

NEI, L ^{[1
]}

机构：

[1] ENVIRONM PROTECT INST,TARTU 2400,ESTONIA

来源：

ELECTROANALYSIS | 1995年 / 7卷 / 05期

关键词：

OXYGEN; SENSOR; CATALYSIS;

D O I：

10.1002/elan.1140070511

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The electrochemical reduction of O-2, was studied at Ni-Cu alloy electrodes in aqueous alkaline solution (0.1-6.0 M KOH) and in unbuffered neutral solution (0.1-2.0 M KCl) using the rotating disk electrode technique. Voltammetric measurements showed that the overall O-2 reduction process at the electrodes containing 70-90% Cu is transport-limited at cathodic potentials, and that they can be used as indicator electrodes for galvanic-type oxygen sensors. An industrially produced Ni-Cu alloy ''melhior'', which contains similar to 30% Ni, was also studied, and this alloy proved to be an excellent O-2 reduction catalyst. Melhior electrodes were utilized as indicator electrodes for oxygen sensors, and showed high output current stability and a long lifetime (exceeding one year).

引用

页码：471 / 475

页数：5

共 27 条

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