The mixing entropy battery alternately immerses its electrodes in fresh water and salt water to produce electricity (Image: Yi Cui)
The mixing entropy battery could be used to build power plants at estuaries where fresh water rivers join the ocean (Image: NASA)
Scientists at Stanford have developed a battery that uses nanotechnology to create electricity from the difference in salt content between fresh water and sea water. The researchers hope to use the technology to create power plants where fresh-water rivers flow into the ocean. The new "mixing entropy" battery alternately immerses its electrodes in river water and sea water to produce the electrical power.
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