Researchers at the University of Mazandaran report a cobalt-based catalyst, Co/C-MOF, made by carbonizing a functionalized MOF-808 framework. In acidic electrolyte it reached an oxygen reduction onset potential of 0.87 V and held stable current in chronoamperometry tests. That puts it among the more competitive platinum-free catalysts for proton exchange membrane fuel cells, though still below platinum's typical 0.95 V onset. The synthesis uses EDTA to anchor cobalt in the MOF before pyrolysis, which prevents metal particles from clumping and leaves a nitrogen-doped carbon with evenly distributed active sites. The authors say the material is a credible candidate for replacing platinum in PEM fuel cells, but the next step is testing in membrane electrode assemblies under real operating conditions. For anyone following hydrogen fuel cell costs, this is a lab-scale data point, not a commercial product. The durability numbers in acid matter, and start-stop cycling and methanol crossover still need to be tested.
