I have read your last paper. I think you are on the right track (like me) for future EV. What do you think to use polyphenols as hydrogen carriers?
I'm working on that rendering plyphenols water soluble, use a proton axchange mebrane and a doped air cathode.
Recharging is performed outboard of EV.
Also, since there are current peack problems in EV, I'm working on a all-solid organic battery that move calcium ions very fast, like a supercapacitor, and it work in parallel with the hybrid redox/fuel cell.
It is based on a doped polymer with anode/cathode active carbonyl mixed with that polymers and separated by the same polymer withoud active polyphenols.