Issue Date: March 28, 2011
A Salty Energy Source
The difference in salinity between ocean and river water can be tapped as a renewable energy source by a battery that stores the energy electrochemically, according to work led by Stanford University materials scientists (Nano Lett., DOI: 10.1021/nl200500s). Exploiting the enormous quantity of entropic energy dissipated as freshwater and saltwater mix in estuaries is a decades-old idea and technical challenge. Most of the strategies for capturing that energy of mixing, such as a . . .
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