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A new way to store energy
A new way to store energy | News24

Two researchers at the University of Calgary report in the journal Science, that they have invented a relatively inexpensive way of using rust to act as a catalyst for capturing energy through the electrolysis of water.

....................................Catalysts are typically made from rare and expensive metals in a crystalline structure.

Splitting water with rusty nets
http://www.journals.elsevier.com/nano-today/news/splitting-water-with-rusty-nets/

A nanonet lattice comprising tiny titanium disilicide wires coated with iron oxide can be used as a catalyst for the hydrolysis of water to produce clean hydrogen for powering fuel cells, according to US researchers [Wang et al., J Am Chem Soc (2011) 133, 2398; doi:10.1021/ja110741z].