In this paper, a thin SS304 stainless steel is chosen as metallic bipolar plate. In order to improve the surface qualities, such as anticorrosion capability, surface roughness, and clearness, the surface of bipolar plate is treated by an electropolishing technology. From the results of corrosion and potentionstatic tests, the corrosion rate and corrosion current of treated plate are much improved. The corrosion rate and corrosion current are reduced to 0.037 mmPY and 3.56 μA cm−2⁠. The cell performance tests show the peak power of treated cell is lower than original cell. However, for the long term tests, the cell with treated plate has a more stable power output. The results show that the treated plate has a good potential for using in the fuel cell.

Issue Section:
Research Papers
Keywords:
carbon compounds, chromium compounds, electrochemical impedance spectroscopy, electrolytic polishing, iron compounds, plates (structures), proton exchange membrane fuel cells, stainless steel, bipolar plates, electropolishing, electrochemical impedance spectroscopy, stainless steel
Topics:
Corrosion, Electrochemical impedance spectroscopy, Plates (structures), Stainless steel, Electrolytic polishing, Fuel cells, Testing performance, Corrosion resistance, Proton exchange membrane fuel cells
1.
Wind
,
J.
,
Späh
,
R.
,
Kaiser
,
W.
, and
Böhm
,
G.
, 2002, “
Metallic Bipolar Plates for PEM Fuel Cells
,”
J. Power Sources
0378-7753,
105
, pp.
256
–
260
.
Crossref
Search ADS
 
2.
Wang
,
H.
,
Sweikart
,
M. A.
, and
Turner
,
J. A.
, 2003, “
Stainless Steel as Bipolar Plate Material for Polymer Electrolyte Membrane Fuel Cells
,”
J. Power Sources
0378-7753,
115
, pp.
243
–
251
.
Crossref
Search ADS
 
3.
Hung
,
Y.
,
El-Khatib
,
K. M.
, and
Tawfik
,
H.
, 2006, “
Testing and Evaluation of Aluminum Coated Bipolar Plates of PEM Fuel Cells Operating at 70°C
,”
J. Power Sources
0378-7753,
163
, pp.
509
–
513
.
Crossref
Search ADS
 
4.
Nikam
,
V. V.
, and
Reddy
,
R. G.
, 2005, “
Corrosion Studies of a Copper-Beryllium Alloy in a Simulated Polymer Electrolyte Membrane Fuel Cell Environment
,”
J. Power Sources
0378-7753,
152
, pp.
146
–
155
.
Crossref
Search ADS
 
5.
Joseph
,
S.
,
McClure
,
J. C.
,
Chianelli
,
R.
,
Pic
,
P.
, and
Sebastian
,
P. J.
, 2005, “
Conducting Polymer-Coated Stainless Steel Bipolar Plates for Proton Exchange Membrane Fuel Cells (PEMFC)
,”
Int. J. Hydrogen Energy
0360-3199,
30
, pp.
1339
–
1344
.
Crossref
Search ADS
 
6.
Wang
,
Y.
, and
Northwood
,
D. O.
, 2007, “
An Investigation of the Electrochemical Properties of PVD TiN-Coated SS410 in Simulated PEM Fuel Cell Environments
,”
Int. J. Hydrogen Energy
0360-3199,
32
, pp.
895
–
902
.
Crossref
Search ADS
 
7.
Wang
,
Y.
, and
Northwood
,
D. O.
, 2007, “
An Investigation into TiN-Coated 316L Stainless Steel as a Bipolar Plate Material for PEM Fuel Cells
,”
J. Power Sources
0378-7753,
165
, pp.
293
–
298
.
Crossref
Search ADS
 
8.
Faust
,
C. L.
, 1983, “
Electropolishing II: The Practical Side
,”
Metal Finishing
, pp.
59
–
63
.
9.
Li
,
Y.
,
Meng
,
W. J.
,
Swathirajan
,
S.
,
Harris
,
S. J.
, and
Doll
,
G. L.
, 1995, “
Corrosion-Resistance PEM Fuel Cell
,” US Patent No. 5624769.
10.
Jones
,
D. A.
, 1992,
Principles and Prevention of Corrosion
,
Macmillan
,
New York
.
11.
Hoogers
,
G.
, 2002,
Fuel Cell Technology Handbook
,
CPC
,
Morgantown, WV
.
12.
Iversen
,
A. K.
, 2006, “
Stainless Steels in Bipolar Plates—Surface Resistive Properties of Corrosion Resistant Steel Grades During Current Loas
,”
Corros. Sci.
0010-938X,
48
, pp.
1036
–
1058
.
Crossref
Search ADS
 
13.
Lee
,
S. J.
, and
Lai
,
J. J.
, 2003, “
The Effects of Electropolishing (EP) Process Parameters on Corrosion Resistance of 316L Stainless Steel
,”
J. Mater. Process. Technol.
0924-0136,
140
, pp.
206
–
210
.
Crossref
Search ADS
 
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