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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
210 Fuel Cells
η
αα
=−
+
+RT
F
jj
j
RT
F
jj
Ox,a
extloss
aRed,c
extlos
ln ln
0
ss
c
econ extiextloss
La
La
j
rr jrjj
RT
nF
j
j
0
−+ −+
()
()
ln
−−
+
−−
jj
RT
nF
j
jj j
extloss
Lc
Lc extloss
ln

.
(5.153)
The kinetic losses, ohmic losses, mass transfer losses, and short circuit and
crossover losses are illustrated in Figure 5.27. The dominant losses are typi-
cally activation losses and ohmic losses. At high current density, the mass
transfer or concentration losses dominate. In the illustration, the internal
losses are shown as constant; however, the internal losses also depend on the
current density.
The fuel cell voltage E is thus the difference between open-circuit vol ...
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Publisher Resources

ISBN: 9781420089684