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Recharging the batteries

JUN 01, 2009
Allen E. Fuhs

I am curious about the use of terms in the article “Batteries and Electrochemical Capacitors” by Héctor Abruña, Yasuyuki Kiya, and Jay Henderson (Physics Today, December 2008, page 43 ). When I went to college many years ago, the words “anode” and “cathode” referred to function and not polarity. Electrons always come out of the anode. When a battery switches from charge to discharge, the anode switches from positive to negative terminal (or vice versa). Are the terms no longer used that way?

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Allen E. Fuhs, Naval Postgraduate School, Monterey, California, US .

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This Content Appeared In
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Volume 62, Number 6

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