The effects of the polytetrafluoroethylene (PTFE) content and sintering temperature on the properties of a fuel cell electrode backing layer are studied in this work. Characterization of the electrical conductivity, hydrophobicity, and surface structure of the backing layer is carried out for various PTFE content values (15–45 wt. %) and sintering temperatures (175–400 °C). The results showed that, generally, the electrical conductivity of the backing layer surface decreased whereas the hydrophobicity increased as the PTFE content and the sintering temperature increased. Based on the observations made via scanning electron microscope (SEM) analysis and testing of the electrical conductivity and hydrophobicity, the PTFE content should not exceed 35 wt. %, and the best sintering temperature was 350 °C.

References

References
1.
Wang
,
Z.-B.
,
Zuo
,
P.-J.
,
Chu
,
Y.-Y.
,
Shao
,
Y.-Y.
, and
Yin
,
G.-P.
,
2009
, “
Durability Studies on Performance Degradation of Pt/C Catalysts of Proton Exchange Membrane Fuel Cell
,”
Int. J. Hydrogen Energy
,
34
(
10
), pp.
4387
4394
.10.1016/j.ijhydene.2009.03.045
2.
Taylor
,
A. D.
,
Kim
,
E. Y.
,
Humes
,
V. P.
,
Kizuka
,
J.
, and
Thompson
,
L. T.
,
2007
, “
Inkjet Printing of Carbon Supported Platinum 3-D Catalyst Layers for Use in Fuel Cells
,”
J. Power Sources
,
171
(1), pp.
101
106
.10.1016/j.jpowsour.2007.01.024
3.
Daud
,
W. R. W.
,
Mohamad
,
A. B.
,
Kadhum
,
A. A. H.
,
Chebbi
,
R.
, and
Iyuke
,
S. E.
,
2004
Performance Optimisation of PEM Fuel Cell During MEA Fabrication
,”
Energy Convers. Manage.
,
45
(20), pp.
3239
3249
.10.1016/j.enconman.2004.01.011
4.
Du
,
C.
,
Wang
,
B.
, and
Cheng
,
X.
,
2009
, “
Hierarchy Carbon Paper for the Gas Diffusion Layer of Proton Exchange Membrane Fuel Cells
,”
J. Power Sources
,
187
(
2
), pp.
505
508
.10.1016/j.jpowsour.2008.11.046
5.
Wang
,
Y.
,
Wang
,
C.-Y.
, and
Chen
,
K. S.
,
2007
, “
Elucidating Differences Between Carbon Paper and Carbon Cloth in Polymer Electrolyte Fuel Cells
,”
Electrochim. Acta
,
52
(
12
), pp.
3965
3975
.10.1016/j.electacta.2006.11.012
6.
Radhakrishnan
,
V.
, and
Haridoss
,
P.
,
2011
, “
Differences in Structure and Property of Carbon Paper and Carbon Cloth Diffusion Media and Their Impact on Proton Exchange Membrane Fuel Cell Flow Field Design
,”
Mater. Des.
,
32
(
2
), pp.
861
868
.10.1016/j.matdes.2010.07.009
7.
Lin
,
J. F.
,
Wertz
,
J.
,
Ahmad
,
R.
,
Thommes
,
M.
, and
Kannan
,
A. M.
,
2010
, “
Effect of Carbon Paper Substrate of the Gas Diffusion Layer on the Performance of Proton Exchange Membrane Fuel Cell
,”
Electrochim. Acta
,
55
(
8
), pp.
2746
2751
.10.1016/j.electacta.2009.12.056
8.
Lim
,
C.
, and
Wang
,
C. Y.
,
2004
, “
Effects of Hydrophobic Polymer Content in GDL on Power Performance of a PEM Fuel Cell
,”
Electrochim. Acta
,
49
(
24
), pp.
4149
4156
.10.1016/j.electacta.2004.04.009
9.
Liu
,
C.-H.
,
Ko
,
T.-H.
,
Shen
,
J.-W.
,
Chang
,
S.-I.
,
Chang
,
S.-I.
, and
Liao
,
Y.-K.
,
2009
, “
Effect of Hydrophobic Gas Diffusion Layers on the Performance of the Polymer Exchange Membrane Fuel Cell
,”
J. Power Sources
,
191
(
2
), pp.
489
494
.10.1016/j.jpowsour.2009.02.017
10.
Chiu
,
K. F.
, and
Wang
,
K. W.
,
2007
, “
Hydrophobic Coatings on Carbon Electrodes for Proton Exchange Membrane Fuel Cells
,”
Surface Coatings Technol.
,
202
(
4–7
), pp.
1231
1235
.10.1016/j.surfcoat.2007.07.064
11.
Zhou
,
T.
, and
Liu
,
H.
,
2006
, “
Effects of the Electrical Resistances of the GDL in a PEM Fuel Cell
,”
J. Power Sources
,
161
(
1
), pp.
444
453
.10.1016/j.jpowsour.2006.04.106
12.
Ismail
,
M. S.
,
Damjanovic
,
T.
,
Ingham
,
D. B.
,
Pourkashanian
,
M.
, and
Westwood
,
A.
,
2010
, “
Effect of Polytetrafluoroethylene-Treatment and Microporous Layer-Coating on the Electrical Conductivity of Gas Diffusion Layers Used in Proton Exchange Membrane Fuel Cells
,”
J. Power Sources
,
195
(
9
), pp.
2700
2708
.10.1016/j.jpowsour.2009.11.069
13.
Mironov
,
V. S.
,
Kim
,
J. K.
,
Park
,
M.
,
Lim
,
S.
, and
Cho
,
W. K.
,
2007
, “
Comparison of Electrical Conductivity Data Obtained by Four-Electrode and Four-Point Probe Methods for Graphite-Based Polymer Composites
,”
Polymer Test.
,
26
(
4
), pp.
547
555
.10.1016/j.polymertesting.2007.02.003
14.
Zhang
,
X.
, and
Shen
,
Z.
,
2002
, “
Carbon Fiber Paper for Fuel Cell Electrode
,”
Fuel
,
81
(
17
), pp.
2199
2201
.10.1016/S0016-2361(02)00166-7
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