This data-file reviews fifty patents into proton exchange membrane fuel cells (PEMFCs), filed by leading companies in the space in 2020, in order to understand the key challenges the industry is striving to overcome.
The key focus areas are controlling the temperature, humidity and longevity of hydrogen fuel cells. But unfortunately, we find over half of the proposed solutions are likely to increase end costs.
We remain cautious on the practicalities and the economics of hydrogen fuel cell vehicles (2x most costly than conventional vehicles per km, note here) and hydrogen fuel cells for power generation (10x more costly, note here).