Cells for Hydrogen Generation; Aspects of Hydrogen Storage

9.1

Intermittency of Renewable Energy

Hydrogen is available, but tightly bound, in water and many other compounds. To produce hydrogen from water requires an energy input. Hydrogen is not a source of energy, but rather a means of storing energy. A hydrogen infrastructure for storing and transporting energy is a possible alternative to batteries to store energy from solar cells. In a large-scale scenario, liquid hydrogen might be transported by railroad tank car, analogous to liquid natural gas (LNG), rather than by electric transmission over power lines, which are costly and require connected plots of land. One, but not the only, clear route to produce hydrogen from solar energy is via photovoltaic (PV) cells followed by electrolysis of water. We can take the point of view that the viability of this route is contingent on availability of large-scale inexpensive solar power, which the CIGS and CdTe cells seem to offer.

9.2

Updated: October 27, 2015 — 12:10 pm