Hydrogen concentration sensor
AssigneeDoosan Fuel Cell America, Inc.
InventorsJoshua PRESTON, Marc SOLDINI
Life of this patent
Estimating the term…
Abstract
An illustrative example hydrogen concentration sensor includes a plurality of electrically conductive plates. A hydrogen evolving electrode assembly in a first location between two of the plates is configured to generate hydrogen. A detection electrode assembly in a second location between two of the plates is configured to provide an indication of a concentration of hydrogen in a fluid of interest. A plurality of isolating layers includes a first isolating layer at the first location between two of the plates and a second isolating layer at the second location between two of the plates. The first and second isolating layers each include a sealant that secures the two plates together and seals a perimeter around the electrode assembly at the corresponding location.
Claims20
A hydrogen concentration sensor, comprising:
- a plurality of electrically conductive plates;
- a hydrogen evolving electrode assembly in a first location between two of the plates, the hydrogen evolving electrode assembly being configured to generate hydrogen;
- a detection electrode assembly in a second location between two of the plates with at least one of the plates between the detection electrode assembly and the hydrogen evolving electrode assembly, the detection electrode assembly being configured to provide an indication of a concentration of hydrogen in a fluid of interest;
- and
- a plurality of isolating layers, a first one of the isolating layers being at the first location between two of the plates, a second one of the isolating layers being at the second location between two of the plates, the first and second isolating layers each including a sealant that secures the two plates together and seals a perimeter around the electrode assembly at the corresponding location.
A method of assembling a hydrogen concentration sensor, the method comprising:
- arranging a plurality of electrically conductive plates in a stack;
- positioning a hydrogen evolving electrode assembly in a first location in the stack between two of the plates, the hydrogen evolving electrode assembly being configured to generate hydrogen;
- positioning a detection electrode assembly in a second location in the stack between two of the plates with at least one of the plates between the detection electrode assembly and the hydrogen evolving electrode assembly, the detection electrode assembly being configured to provide an indication of a concentration of hydrogen in a fluid of interest;
- electrically isolating the plates from each other;
- and
- sealing a perimeter around each electrode assembly at the corresponding location using a sealant that adheres to the two plates at each location.
Dependencies are inferred from the claim text.