Actually, H2 fuel cell vehicles are hybrid cars. They have a battery
/and/ a fuel cell.
The battery provides a boost for acceleration, and stores energy during
regen. The fuel cell can then be smaller to only provide just the
average power needs. The battery also allows the fuel cell to ramp up
and down more slowly as there are pumps, flows, etc. involved.
I have done the math. Indeed, fuel cells don't make economic sense in
passenger vehicles. The fuel cost more than electricity per mile driven.
This is a fact that is easily confirmed. Just compare the mileage, fuel
use, and fuel cost for both types of vehicle. Pretty simple. (If you
want to "twist the knife" add in the compression costs for H2.)
An important additional cost that most folks don't realize is that fuel
cells have a limited lifespan. When they "breathe" in air, they also
take in pollutants and slowly poison the fuel cell. The cost of
replacement can be quite pricey as the active element is platinum. (At
least it was last time I checked, but they may have come up with some
new alternative. The alternatives to platinum that I am aware of greatly
lower the efficiency, so they are not really cost effective.) Early fuel
cell vehicles had to replace the fuels cells after just a few months of
use. They have made great strides since then, but they still wear out,
which the fuel cell advocates never seem to mention. ;-)
Bill D.
On 6/26/2019 5:32 PM, Lee Hart via EV wrote:
Gentlemen, please! This is the electric vehicle *discussion* list; not
Facebook, talk radio, or a political campaign rally. People who hold
an opposing view aren't idiots, crooks, or liars. Let's skip the
emotion, and stick to the facts.
May I point out that most H2 fueled vehicles *are* EVs? Their H2 tanks
and fuel cells are just a different form of battery. They are thus a
reasonable topic for discussion on this list.
The world faces serious problems with energy usage, climate change,
and rising CO2 levels. We got into this mess by letting others make
the choices for us. They wound up deciding based on money,
self-interest, and a "we've always done it this way" attitude. It's
becoming increasingly clear that "their way" will lead to a disastrous
future.
So let's discuss *every* possible transportation alternative. Let's
debate what *kind* of battery is best; its performance and cost,
advantages and disadvantages. It is likely that different ones will be
best for different purposes. We need to try them *all*! Learn what
works, and what doesn't.
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