25cm² surface area is the next step for evaluation experiments of new types of catalyst or membranes. It is typically used within academia or R&D labs as a mean for small scale testing of newly made materials. Upon a positive result, usually a commercial size test is initiated.
These 25cm² graphite plates are designed to fit into PEM components 25cm² test frame, though they can also be used within your own frame. The graphite powder material was of very fine grade before it was pressed into shape ensuring high density, durability and conductivity.
PEM components has a standard flow field design which is commonly accepted by industry and academia. However it is possible to tailor your flow field design into our graphite plates. Please contact us for the possibilities.
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Specifications
Property US Value
Metric value
Density 0.066
lb∙in-3 1.82
g∙cm-3 Particle size 0.0004
In 0.00102
Cm Flexural strength 8400
psi 57.9
MPa Compressive strength 18500
psi 127.6
MPa Resistivity
5.5
Ω∙(in∙10-4) 13.97
Ω∙(cm∙10-4) Hardness 65
Psi 65
kg∙mm-2 CTE 3.3
in∙(in-1°F∙10-6) 5.9
μm∙m-1°C Porosity 12
% VOL Thermal conductivity 48
BTU (h∙ft-2°F∙ft-1) 83
W∙(m²∙K∙m-1)-1 Ash 0.05
% Temperature (Air) 750
°F 399
°C Temperature (Inert) 5000
°F 2760
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Flow field design
Flow field design plays a factor in cell performance, as the design ensures a homogeneous distrubtion of reactant material accross the active surface area. Not only that, the flowfield also ensures removal of water droplets that may condense on the GDL.
Though if fuel cell performance is not within your area of interest, but for instance electrochemical hydrogen purification is, a different flow field might be of more interest. Research studies by Proton Technologies show an enhanced selectivity and therefore, higher purification grade with an adepted flow field. Please contact us to explore the possibilities and tailor create the best possible solution for your application
