
607Energy Storage
© 2008 Taylor & Francis Group, LLC
SOFC cells work at high temperatures (between 800°C and 1000°C) and utilize a solid
ceramic electrolyte such as zirconium oxide stabilized with yttrium oxide instead of a
liquid. The efciency of these cells can reach as high as 60%, and they have the potential
of being used for large-scale energy storage or generating electricity industrially. They can
also be used for cogeneration systems.
The major challenges for widespread application of fuel cells are their cost, durability,
and their need for a continuous and an inexpensive supply of hydrogen.
10.6.3 Generation of Hydrogen
There are cur ...