Hydrogen monitoring and delivery components and methods
In an embodiment, a hydrogen monitoring system comprises a plurality of sensing elements that individually comprise a working electrode, a counter electrode, an insulating layer located in between the working electrode and the counter electrode, a catalyst located on an end of both the working electrode and the counter electrode, an electrolyte located on the end of the sensing elements on both the working electrode and the counter electrode, between the working electrode and the counter electrode, and in contact with the catalyst, and an electrical circuit located on an opposite end of the sensing element that connects the working electrode and the counter electrode.
1. A hydrogen monitoring system comprising a plurality of sensing elements that individually comprise
a working electrode,
a counter electrode,
an insulating layer located in between the working electrode and the counter electrode,
wherein the working electrode and the counter electrode have a longitudinal direction along a z-axis of the respective sensing elements and have an end surface at an end thereof, wherein the end surface defines a plane that is at an angle to the longitudinal direction, wherein a catalyst is located on the end surface,
an electrolyte located on the end of the sensing elements on both the working electrode and the counter electrode, between the working electrode and the counter electrode, and in contact with the catalyst, and
an electrical circuit located on an opposite end of the sensing element that connects the working electrode and the counter electrode.
2. The monitoring system of claim 1 , wherein the working electrode and the counter electrode each independently comprise at least one of gold, platinum, copper, platinum, rhodium, or silver.
3. The monitoring system of claim 1 , wherein the catalyst comprises at least one of platinum, palladium, rhodium, carbon, gold, tantalum, tungsten, ruthenium, iridium, titanium, or osmium.
4. The monitoring system of claim 1 , wherein the electrolyte comprises at least one of perchloric acid, phosphoric acid, an acid gel, an ionic liquid, or an ion-conducting polymer.
5. The monitoring system of claim 1 , wherein the insulating layer comprises at least one of magnesium oxide, aluminum oxide, silicon oxide, or zinc oxide.
6. The monitoring system of claim 1 , further comprising an outer sheath.
7. The monitoring system of claim 1 , further comprising a thermocouple.
8. The monitoring system of claim 1 , further comprising a housing capable of withstanding an internal pressure of up to 15,000 psi.
9. A hydrogen delivery system comprising a hydrogen source, an inlet fluid flow path from the hydrogen source to the hydrogen monitoring system of claim 1 , and an outlet fluid flow path from the hydrogen monitoring system to an outlet.
10. The hydrogen delivery system of claim 9 , wherein the hydrogen delivery system is capable of monitoring a contaminant level of at least one of ammonia, carbon monoxide, carbon dioxide, formaldehyde, formic acid, a hydrocarbon, or water.
11. A method of determining a level of a contaminant in a hydrogen gas using the hydrogen delivery system of claim 9 , comprising:
flowing the hydrogen gas from the hydrogen source along the inlet fluid flow path, past the plurality of sensing elements, and along the outlet fluid path to the outlet;
measuring data obtained from the electrical circuit and reading the data via a software program;
manipulating the data to provide a manipulated data;
comparing the manipulated data to a pre-determined contaminant threshold;
determining if the manipulated data is greater than, less than, or equal to the pre-determined contaminant threshold and providing a decision label based on the determining; and
providing an output data comprising the decision label.
12. The method of claim 11 , wherein the manipulating the data comprises calculating at least one of a first time derivative of the data, transforming the data, or by integrating the data.
13. The method of claim 11 , further comprising the applying a filter or a noise reduction algorithm.
14. The method of claim 11 , further comprising cleaning the contaminant from the plurality of the sensing elements.
15. A hydrogen monitoring system comprising a plurality of sensing elements that individually comprise,
a working electrode,
a counter electrode,
an insulating layer located in between the working electrode and the counter electrode,
a catalyst located on an end of both the working electrode and the counter electrode,
an electrolyte located on the end of the sensing elements on both the working electrode and the counter electrode, between the working electrode and the counter electrode, and in contact with the catalyst, and
an electrical circuit located on an opposite end of the sensing element that connects the working electrode and the counter electrode,
wherein the catalyst and the electrolyte are not located on the opposite end of the working electrode or on the opposite end of the counter electrode.