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Smallest Hydrogen Fuel Cell

  Smallest Hydrogen Fuel Cell
Smallest Hydrogen Fuel Cell

Scientists at the University of Illinois have developed a hydrogen fuel cell that measures 3 millimeters across.
The cell uses just four components - a water reservoir and a chamber containing metal hydride, separated by a thin membrane with an assembly of electrodes that conduct electricity underneath.The cell is so small it does not require a pump, pressure sensor, and controlling electronics that create a power drain in normal fuel cells.
The first cells generated some 0.7 volts and a current of 0.1 milliamps for 30 hours. New versions should be able to produce 1 milliamp at a similar voltage.


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