Solar hydrogen generator
A completely different approach to storing renewable energy is with hydrogen. Startup SunCatalytix is developing materials used in electrolyzers, or machines which use a flow of electrical current to split water to generate hydrogen. The hydrogen would then be stored in tanks and used as needed to generate electricity in fuel cells. Pictured here is a solar cell, which when exposed to light, can split water to make hydrogen (and oxygen) directly.
March 5, 2012 3:59 AM PST
Photo by: Martin LaMonica/CNET
| Caption by: Martin LaMonica
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