Skip to Main Content
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
307Charge and Water Transport in Fuel Cells
them. The number of water molecules dragged by each proton is given by the
electro-osmotic drag coefcient,
nn
drag HO
2
H=
+
/
. A more detailed discussion of
the composition and construction of a Naon polymer electrolyte membrane
will be given in Chapter 9.
Water transport ux owing to electro-osmotic drag in a cell with operating
current density i is given as
jn
i
nF
HO,esdrag
e
2
=
, (7.68)
where
i
nF
e
= proton ux, which is two times the hydrogen ux.
The major components of water ux in the membrane are shown in Figure 7.9.
Diffusion of water owing to concentration gradient is given as
jDc
HO,d HO
HO
22
2
=−
. (7.6
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Start your free trial

You might also like

Proton Exchange Membrane Fuel Cells

Proton Exchange Membrane Fuel Cells

Zhigang Qi
Hydrogen Storage Technologies

Hydrogen Storage Technologies

Mehmet Sankir, Nurdan Demirci Sankir

Publisher Resources

ISBN: 9781420089684