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ELECTROMOTIVE FORCE, EMF (CELLS) [electronic resource].

Published:
Washington, D.C. : United States. Dept. of Energy. Office of Energy Research, 1998.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description:
page(s) 12 : digital, PDF file
Additional Creators:
Brookhaven National Laboratory, United States. Department of Energy. Office of Energy Research, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary:
The voltage or electric potential difference across the terminals of a cell when no current is drawn from it. The emf of a cell is the sum of the electric potential differences (PDs) produced by a separation of charges (electrons or ions) that can occur at each phase boundary (or interface) in the cell. The magnitude of each PD depends on the chemical nature of the two contacting phases. Thus, at the interface between two different metals, some electrons will have moved from the metal with a higher free energy of electrons to the metal with a lower free energy of electrons. The resultant charge separation will produce a PD (just as charge separation produces a voltage across a capacitor) that, at equilibrium, exactly opposes further electron flow. Similarly, PDs can be produced when electrons partition across a metal/solution interface or metal/solid interface, and when ions partition across a solution/membrane/solution interface.
Report Numbers:
E 1.99:bnl--65847
E 1.99: kc030101
kc030101
bnl--65847
Subject(s):
Other Subject(s):
Note:
Published through SciTech Connect.
09/16/1998.
"bnl--65847"
" kc030101"
"KC030101"
Feldberg, S.W.; Archer, M.D.
Funding Information:
AC02-98CH10886
AS002CSD
View MARC record | catkey: 14393884