METHOD AND DEVICE FOR DETERMINING THE REDOX STATE OF A REACTION SURFACE COATED WITH A CATALYST MATERIAL

METHOD AND DEVICE FOR DETERMINING THE REDOX STATE OF A REACTION SURFACE COATED WITH A CATALYST MATERIAL

The invention relates to a method and device for determining the redox state of an anode (11), which is coated with a catalyst material or consisting thereof, associated with a high temperature fuel cell (10) or a reaction surface (16) of a reformer (13). According to the invention, at least one fir...

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1. Verfasser: THANNER, HERBERT
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Sprache:eng ; fre ; ger
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BASIC ELECTRIC ELEMENTS
ELECTRICITY
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
TESTING
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creator THANNER, HERBERT
description The invention relates to a method and device for determining the redox state of an anode (11), which is coated with a catalyst material or consisting thereof, associated with a high temperature fuel cell (10) or a reaction surface (16) of a reformer (13). According to the invention, at least one first resonator (3) of a piezoelectric sensor device (1) is arranged in the anode gas flow (5) of the high temperature fuel cell or in the gas flow of the reformer (13). The first resonator (3) is provided with a coating (4) which is oxidizable or reducible in the gas flow. The device also comprises a device (8) for measuring at least one modification of the resonance behaviour of the first resonator (3). The detected measuring value acts as an indicator of the redox state of the anode (11) of the high temperature fuel cell (10) or reaction surface (16) of the reformer (13).
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subjects BASIC ELECTRIC ELEMENTS
ELECTRICITY
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
TESTING
title METHOD AND DEVICE FOR DETERMINING THE REDOX STATE OF A REACTION SURFACE COATED WITH A CATALYST MATERIAL
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