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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
482 Fuel Cells
For dominant mass concentration loss in the cathode electrode, the limit-
ing current density is given by Equation 11.24b
jnFD
x
L
LeO
eff
cO
c
2
2,ch
=
ρ
.
(11.24b)
Example 11.3: One-Dimensional SOFC Model
Consider the electrolyte as 8% YSZ solid oxide fuel cell with the follow-
ing known data:
Anode gas stream:
Inlet gas composition: 95% H
2
and 5%H
2
O
Inlet pressure, P
a
= 1 atm (101.3 Pa)
Cathode gas stream:
Inlet gas composition: Air with 21% O
2
and 79% N
2
Inlet pressure, P
c
= 1 atm (101.3 Pa)
Diffusivities:
DD
H
2,
H
2
OO
2,
N
2
eff2ef
f2
m/sand cm /s =
11
00
2
4
.
Kinetic parameters:
Cathode exchange transfer coefcient, α = 0.5
Cathode exchange curre ...
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Publisher Resources

ISBN: 9781420089684