Abstract
Several kinds of carbon microbeads and noble metal powders have been tested as an additive to the iron (II) phthalocyanine-based sensing electrode (SE) for the amperometric oxygen sensors; Ag|Ag 6I 4WO 4|PbSnF 4|SE, O 2. The use of the SE containing surface-modified carbon microbeads enables the sensors not only to respond fast at room temperature but to exhibit the highest sensitivity. Furthermore, it is capable of determining oxygen partial pressures of 2–750 kPa in a wide operating pressure range 10 kPa–3.5MPa.
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