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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
255Heat and Mass Transfer in Fuel Cells
Solution to Equations 6.91 and 6.92 leads to the linear concentration distri-
bution in a gas diffusion layer given as
Cx C
CC
a
x
ii
ii
()
,
,,
=+
s
el s
el
(6.93)
and the diffusion mass transfer rate based on Darcy’s equation is given as
jDA
C
x
DA
a
CC
iij
i
ij
ii
=−
=−
d
d
el
se
l
()
,,
. (6.94)
This solution also denes the diffusion mass transfer resistance as
R
a
DA
ij
diff,m
el
=
. (6.95)
For the rate of reaction at the electrode–electrolyte interface where the
reactant species disappears by a rst-order reaction, the rate of mass trans-
fer rate at the surface is equal to the rate of reactant consumption and is
given as
jkAC
i
=
′′
1,
ct
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Publisher Resources

ISBN: 9781420089684