Electrochemical sensors having nonporous working electrode
First Claim
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1. An electrochemical gas sensor, comprising:
- a substrate having a surface;
a first electrode deposited on said surface;
a second electrode spaced apart from said first electrode and deposited on said surface for detecting a gas;
an electrolytic material in electrical contact with said first electrode and said second electrode for carrying a flow of current;
said second electrode having a porosity of less than 5%, a pore size less than 0.12 micrometer at said pore size'"'"'s greatest measurement, and a thickness less than 0.2 micrometer for controlling flooding; and
a reservoir for containing a solution to hydrate said electrolyte.
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Abstract
The invention relates to an electrochemical gas sensor having a substrate, substrate surface for depositing electrodes thereon, counter and sensing electrodes for measuring current flow, an electrolyte for providing an electrical connection between the electrodes, and an electrode surface having minimal porosity, pore size, and thickness for deterring flooding.
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Citations
24 Claims
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1. An electrochemical gas sensor, comprising:
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a substrate having a surface;
a first electrode deposited on said surface;
a second electrode spaced apart from said first electrode and deposited on said surface for detecting a gas;
an electrolytic material in electrical contact with said first electrode and said second electrode for carrying a flow of current;
said second electrode having a porosity of less than 5%, a pore size less than 0.12 micrometer at said pore size'"'"'s greatest measurement, and a thickness less than 0.2 micrometer for controlling flooding; and
a reservoir for containing a solution to hydrate said electrolyte. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification
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Current AssigneePerkinElmer LAS, Inc. (Perkinelmer Incorporated)
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Original AssigneePerkinelmer Instruments LLC (Revvity, Inc.)
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InventorsDalmia, Avinash, Prohaska, Otto J.
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Primary Examiner(s)Olsen, Kaj K.
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Application NumberUS10/029,507Publication NumberTime in Patent Office1,338 DaysField of Search204421-429US Class Current204/424CPC Class CodesG01N 27/4045 for gases other than oxygenG01N 27/4074 for detection of gases othe...
