RE: EV (L) to (S)12 Nov 2019 00:47
I tried looking at what Nafion is. From what I can understand (!) it seems to be a membrane which allows anions (so H+) to pass through, but not cations (so O-).
This might mean that the new membrane is much better at transporting a steady flow of H+ and O- to the electrodes than the fluid electrolyte. From previous videos of electrolyte/gas flow to the electrodes, it all improved a lot when they added new flow holes, but there were still areas of electrode without good flow. I may be very wrong, but maybe that is what achieves 5X more power density than the liquid. I am assuming they are the same electrodes, but again that could be wrong. If they had a much better set of electrodes, why not use them in the (L) form after all.
About the two types being complementary as the liquid cell can act as a scrubber for ammonia contaminant, it sounds like if your hydrogen is particulary poor you are better off with the liquid type. Not that the two types would be used together to scrub. Again I may be wrong.
All this is amazing news. I have not posted today as I have been speechless with excitement at the massive potential of all this. It sounds as if the Nafion type membrane has many applications and is difficult and expensive to make. As far as I remember from the last AGM, our membrane was said to be something like a quarter the price. If this is a billion dollar a year market then the membrane alone could be a company maker getting the sp to £1. Once this is all working and out to market any potential take over price for AFC must have just jumped!