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Fuel Cells
book

Fuel Cells

by Shripad T. Revankar, Pradip Majumdar
May 2014
Beginner to intermediate content levelBeginner to intermediate
748 pages
23h 13m
English
CRC Press
Content preview from Fuel Cells
113Thermodynamics of Fuel Cells
If n
e
is the number of electrons per molecule of reactant transferred, then n
e
N
a
is the total number of electrons that pass through the external circuit, where
N
a
is the Avogadro number, dened as the number of molecules per mole of sub-
stance and is a constant value, N
a
= 6.022 × 10
23
. If e is the chargeofoneelec-
tron, then the total charge that ows through the circuit is givenby
N
e
= n
e
N
a
e = n
e
F, coulombs (C) (4.13)
where F = N
a
e is Faraday’s constant dened as the charge carried by a mole of
electrons. Considering the value of the charge as e = 1.602 × 10
−19
C, Faraday’s
constant is given as
F = N
a
e
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Publisher Resources

ISBN: 9781420089684