Electrolyte composition for screen printing and miniaturized oxygen electrode and production process thereof
First Claim
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1. A process of producing a miniaturized oxygen electrode, comprising the steps of:
- preparing an electrically insulating substrate;
forming an electrolyte-containing material on said substrate;
forming on said substrate a set of component electrodes in contact with said electrolyte-containing material; and
forming an oxygen gas-permeable membrane covering said electrolyte-containing material;
said forming of said electrolyte-containing material being carried out by screen-printing on said substrate an electrolyte composition comprising;
an organic solvent;
an inorganic salt in the form of a fine powder able to pass through a screen printing mesh prepared by pulverizing potassium chloride or sodium chloride, said salt powder being dispersed in said organic solvent; and
polyvinyl pyrrolidone dissolved in said organic solvent.
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Abstract
An electrolyte composition for screen printing, comprising: an organic solvent; an inorganic salt in the form of a fine powder able to pass through a screen printing mesh, the salt powder being dispersed in the organic solvent; and polyvinyl pyrrolidone dissolved in the organic solvent. A miniaturized oxygen electrode having an oxygen sensing site filled with the electrolyte composition. A process for producing a miniaturized oxygen electrode, including a step of patterning or selectively removing an oxygen gas-permeable membrane at a pad region by removing or peeling off an underlying cover film formed thereunder.
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Citations
4 Claims
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1. A process of producing a miniaturized oxygen electrode, comprising the steps of:
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preparing an electrically insulating substrate; forming an electrolyte-containing material on said substrate; forming on said substrate a set of component electrodes in contact with said electrolyte-containing material; and forming an oxygen gas-permeable membrane covering said electrolyte-containing material; said forming of said electrolyte-containing material being carried out by screen-printing on said substrate an electrolyte composition comprising; an organic solvent; an inorganic salt in the form of a fine powder able to pass through a screen printing mesh prepared by pulverizing potassium chloride or sodium chloride, said salt powder being dispersed in said organic solvent; and polyvinyl pyrrolidone dissolved in said organic solvent. - View Dependent Claims (2)
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3. A process for producing a miniaturized oxygen electrode, comprising the steps of:
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preparing an electrically insulating substrate; forming an electrolyte-containing material on said substrate; forming on said substrate a set of component electrodes each having an end in contact with said electrolyte-containing material and an end for external electrical connection; and forming a removable cover film on said substrate in a region to be exposed in the following removing step, said region containing said component electrode end for external electrical connection; forming an oxygen gas-permeable membrane covering the substrate surface including the region of said removable cover film; and removing said oxygen gas-permeable membrane by peeling said removable cover film away from said substrate surface, to expose said to-be-exposed region of said substrate, to thereby shape said oxygen gas-permeable membrane to a set pattern. - View Dependent Claims (4)
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Specification