Single cell test fixtures
Description
These single cells are composed of two (2) graphite plates in which gas channels have been machined in order to distribute the gas on the electrodes surface, two (2) current collectors which are located behind the graphite plates, two (2) insulator sheets preventing from electric short circuits in the cell, and two (2) end plates used to tighten the cell together.
Some 1mm, 2mm and 3.2 mm diameter holes have been drilled in the graphite plates for voltage and temperature probes. A 6.8mm diameter hole has been drilled in each end plate to receive a heating cartridge.
These test cells are all equipped with “swagelock” type fittings matching 6mm diameter gas pipes.
Models
- 5 cm² single cell test fixture
- 16 cm² single cell test fixture
- 25 cm² single cell test fixture
- 50 cm² single cell test fixture
Membrane/Electrodes Assemblies (MEAs)
(©photo : D.Michon/Artechnique-CEA)
Description
These MEAs are based on a 50 µm thick perfluoronated membrane, and a
platinum loading of 0.5 mg/cm² (+/- 0.05), obtained with the standard
catalyst concentration, 70% Pt/C.
- 3 Layer MEA correspond to a catalyst covered membrane (CCM): the
proton exchanged membrane is covered with an ink containing the
catalyst on the electroactive area. Platinum and Platinum-Ruthenium
alloy are available for hydrogen and reformate operations
respectively.
- 5 Layer MEA correspond to a CCM with gas diffusion layers (GDL)
completing the electrodes on the electroactive area on both sides of
the membrane
- 7 Layer MEA correspond to a 5-Layer MEA with a flat gasket
(fiberglass reinforced silicon) around both electrodes.
- A subgasket, protecting the membrane and the edges of the active layer can be added to 5 and 7-layer MEAs.
Dimensions
These dimensions are given assuming the active area is centered in
the total area
- 5 cm² : Active area : 23x23 mm/Total area : 50x50mm
- 16 cm² : Active area : 40x40 mm/Total area : 70x70mm
- 25 cm² : Active area : 50x50 mm/Total area : 80x80mm
- 50 cm² : Active area : 71x71 mm/Total area : 120x120mm
- 100 cm² : Active area : 100x100 mm/Total area : 140x140mm
- 225 cm² : Active area : 150x150 mm/Total area : 200x200mm
Fuel cell / Electrolyzer educational kit
Schematic of a Fuel cell/Electrolyser educational kit
Description
- 1 plastic electrolyser cell (25cm²) containing a 7-layer membrane electrode assembly. At the anode side of the electrolyser cell there is a water reservoir, the hydrogen gas produced comes out of the cell via one of the gas exits on the top and bottom side of the cell. A plastic screw is included for closing the unused gas exit.
- 1 plastic air-breathing fuel cell (25cm²). The cell has one hydrogen gas input and one exit. A porous material is placed inside the kit for the homogeneous diffusion of hydrogen over the whole surface area of the membrane electrode assembly.
- Fuel Cell Components
- 3-layer MEAs (CCM)
- Gas diffusion layer materials
- Gasket materials
- 1 dc power supply
- 1 variable resistance
Fuel cell/Electrolyser educational kit
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