The graphene-Nitrogen-Cobalt catalyst indeed can be mixed as a surface coating on particles and results in reduced onset voltages for H2 production. I do not have the numbers. That is why I sent suggestions to Tim Young some time ago. The problem is that graphene is 1 atom thick and can do both things, generate H2 and generate current (i.e. electricity), so why is the restrictive particle needed? To me, those are important features that greatly reduce costs if BOTH are accommodated. Thus, there is competitive technology.
The Cobalt embedded in graphene (which by the way can be rolled up into nano-rods or spheres as Buckyballs) has nearly the same performance as the Platinum based (better than Gold) catalyst and is claimed to be WAY cheaper and wins bang for buck hands down. It seems to me that is the current state in which H2 production and Fuel Cells are. That is where investment opportunities exist.
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