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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
302 Fuel Cells
This voltage loss owing to charge transport is referred to as ohmic loss,
η
ohmic
, in a fuel cell. In order to determine the expression for the ohmic
loss, let us consider charge transport in a plane conductor lm as shown in
Figure7.6.
The charge transport across a conductor of cross-sectional area, A, and
thickness, L, is given by Ohm’s law and Equation 7.6b as
IA
x
=−σ
c
d
d
Φ
. (7.56)
Integrating Equation 7.56 across a charge conductor of thickness L and
cross-sectional area A, we get total voltage drop across the electrolyte or the
ohmic loss owing to charge transport as
IA
L
=
σ
φφ
c
L0
. (7.57)
a
i
φ
a
σA
L
R
ohm
φ
0
FIGURE 7.6
Charge transpor
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Publisher Resources

ISBN: 9781420089684