A Salty Energy Source | March 28, 2011 Issue - Vol. 89 Issue 13 | Chemical & Engineering News
Volume 89 Issue 13 | p. 37 | Concentrates
Issue Date: March 28, 2011

A Salty Energy Source

A newly devised battery can store the entropic energy dissipated as freshwater and saltwater mix
Department: Science & Technology
News Channels: Environmental SCENE, Nano SCENE
Keywords: entropy battery, salinity, electrochemistry

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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