Text: "A salt and battery without any metals." A lightweight, rechargeable storage cell containing no metal or metal ions, developed by Alan G. MacDiarmid and colleagues of the University of Pennsylvania at Pittsburgh, uses polyacetylene, an organic semiconductor. It can act as either an electron source or an electron sink. Upon losing or receiving electrons, its ability to conduct electrons increases about 10 to the 12th power, achieving the conductivity of metals. Science News. 119(7), Feb. 14, 1981. p. 101.

See Also: Power sources, batteries, organic semiconductors, plastic batteries.

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