Electrochemical planar metal/metal oxide electrodes
First Claim
1. An active planar metal oxide electrode prepared by a process comprising combining a non-hydroscopic particulate, salt base component with a metal paste to form a metal paste mixture, heating the metal paste mixture In the presence of air for a time sufficient to oxidize a portion of the mixture to form said planar metal/metal oxide electrode.
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Accused Products
Abstract
An improved active electrode for use in planar sensors has been discovered, the electrode prepared by a process comprising combining a base component with a metal paste and heating the paste in the presence of air for a time sufficient to oxidize a portion of the electrode to produce the metal/metal oxide electrode. The electrodes may be incorporated into various planar sensor formats, particularly pH and CO2 sensors.
16 Citations
17 Claims
- 1. An active planar metal oxide electrode prepared by a process comprising combining a non-hydroscopic particulate, salt base component with a metal paste to form a metal paste mixture, heating the metal paste mixture In the presence of air for a time sufficient to oxidize a portion of the mixture to form said planar metal/metal oxide electrode.
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17. An active planar metal/metal oxide electrode prepared according to a process comprising the steps of:
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combining particles of NaHCO3 having a mesh size of at most about 400 with a palladium paste to form a paste composition comprising about 16 weight percent NaHCO3, based on the total weight of the paste composition; and heating the paste composition to a temperature of from about 525°
C. to about 575°
C. for a time period of from 5 minutes to about 15 minutes to form the active planar metal/metal oxide electrode.
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Specification