April 26, 2012      

NewScientist?A revolutionary battery that exploits the reaction between lithium metal and seawater could soon be powering everything from autonomous submarines to buoys and deep-water sensors.

Lithium is already widely used in batteries because it is lightweight and has a high electrochemical potential. This potential allows it to generate in excess of 3 volts compared with 2 volts for lead-acid batteries and 1.5 volts for zinc-carbon cells. Today's lithium batteries pack plenty of energy by we...

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