New entropy battery: energy from difference in salinity between seawater and fresh water

With the entropy battery, costs are much lower than other ways of accomplishing the same thing due to the absence of replaceable membranes. Because the entropy battery operates in both warm and cold conditions it is a completely renewable resource; one that might lead to mass energy production in both developed countries and those in the third world.
Batteries for Efficient Energy Extraction from a Water Salinity Difference Fabio La Mantia, Mauro Pasta, Heather D. Deshazer, Bruce E. Logan, and Yi Cui
Nano Lett., Publication Date (Web): March 17, 2011 (American Chemical Society)
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