Re: "cool" fuel cells
- --- In email@example.com, "Roxanne Boyer" <rox1@a...> wrote:
> Solid oxide fuel cells operate by passing negative oxygen ionsthrough a ceramic electrolyte membrane. The ions won't move until
the temperature reaches about 600 degC. At 1000 degC they move real
well. Historically, solid oxide fuel cells operated at 800 to 1000
degC in order to get enough conductivity to work. By making the
ceramic membrane real thin (which is technology U of H is trying),
you can operate down to 600 degC, maybe lower, and this is
considered "cool" (relative to 1000 degC). The challenge is that as
the membrane gets thinner, it is more likely to form cracks, which
will ruin the fuel cell. If their bright (and maybe lucky), they may
figure out some tricks to make it work. Eventually some team is
going to make a breakthrough if enough people work at it.
> -ChrisThanks - that's the kind of short easy answer I was hoping for.