Most of the money spent on hydrogen fuel cells has been aimed at reducing the precious metal content, such as platinum, to lower the cost of the electricity-producing device. Automakers have made massive progress in that regard, as well as in reducing the size of the fuel cell stack.
But there is one part of the fuel cell that no automaker company ever talks about: high-volume production. That's because most of the fuel cells built for automobiles today are hand-made by technicians.
As of 2018, Toyota was building about seven Mirai fuel cell vehicles per day, all by hand.
The news Tuesday of General Motors' deal with startup truckmaker Nikola provided no details about the technology GM plans to embrace to crank out fuel cell stacks quickly and with zero defects. The stack, you will recall, contains membranes and thin metal plates, and much like the cells in a battery pack, the more the cells are stacked in a fuel cell, the more elect…