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Stanford Report, March 28, 2011
Stanford researchers use river water and salty ocean water to generate electricity
They have developed a rechargeable battery that uses freshwater and seawater to create electricity. Aided by nanotechnology, the battery employs the difference in salinity between fresh and saltwater to generate a current. A power station might be built wherever a river flows into the ocean...........................................
Researchers report a novel means of extracting energy from water, based on salinity differences in river mouths or estuaries. The operating principle of the rechargeable battery, or cyclic generator, is the reverse of desalination: electrodes are initially charged at low voltage in freshwater and then discharged at high voltage in seawater. The seawater is drained, replaced with freshwater, and the cycle begins again. Efficiencies of 74% were documented in the lab using a positive electrode made from nanorods of manganese dioxide. A power plant drawing at 50 cubic meters of river water per second could generate 100 MW.
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Stanford researchers use river water and salty ocean water to generate electricity
They have developed a rechargeable battery that uses freshwater and seawater to create electricity. Aided by nanotechnology, the battery employs the difference in salinity between fresh and saltwater to generate a current. A power station might be built wherever a river flows into the ocean...........................................
Researchers report a novel means of extracting energy from water, based on salinity differences in river mouths or estuaries. The operating principle of the rechargeable battery, or cyclic generator, is the reverse of desalination: electrodes are initially charged at low voltage in freshwater and then discharged at high voltage in seawater. The seawater is drained, replaced with freshwater, and the cycle begins again. Efficiencies of 74% were documented in the lab using a positive electrode made from nanorods of manganese dioxide. A power plant drawing at 50 cubic meters of river water per second could generate 100 MW.
Go here for more of the article:
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