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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
190 Fuel Cells
η
c
c
=−
j
j
RT
nF
0
.
(5.110)
For the fuel cell, the overpotential on the anode is positive; this makes the
rst term on the right-hand side of the anode current density equation
(Equation 5.103) negligible compared to the second term for moderate values
of overpotential. Thus, the anode current density is reduced to
jje
FR
T
=−
0a
Ox,a a
αη/
.
(5.111)
Thus, at anode, oxidation current is dominant. The negative sign indicates
net oxidation wherein the electrons are leaving the electrode. For cathode,
the overpotential is negative; hence, the second term on the right-hand side
of the cathode current density equation (Equation 5.108) is negligible ...
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Publisher Resources

ISBN: 9781420089684