Pem Fuel Cell, Hydrogen Car, Degradation, Material Science.
https://medium.com/@syona-gupta/pem-fuel-cell-it-powered-space-missions-but-now-might-power-our-buildings-and-vehicles-b250e7e763a9) PEM fuel cells are not a new technology but they are still some gaps in the technology preventing PEM fuel cells from being widely implemented. One of the gaps is