Optimisation of pack chromised stainless steel for proton exchange membrane fuel cells bipolar plates using response surface methodology

Abdul-Ghani Olabi, Khaled Benyounis, Joseph Stokes, Atinuke Oladoye, James Carton

Research output: Contribution to journalArticle

19 Downloads (Pure)

Abstract

Stainless steels, as low cost materials, are attractive for proton exchange membrane fuel cells (PEMFC) bipolar plates. However, these metallic alloys require surface coatings or treatments to enhance its corrosion resistance
and surface conductivity in PEMFC environments. In this study, response surface methodology based on Box–Behnken design was employed to investigate the influence of time, activator content and temperature on corrosion current density of pack chromised 304 stainless steel in simulated PEMFC environment of aerated 0.5 M H2SO4 + 2 ppm HF at 70 °C. These process parameters were optimised and the performance of the optimised coatings in simulated and real PEMFC environments was investigated. The results indicated that temperature
had the most significant influence on the performance of chromised coatings in the selected PEMFC environment.
The optimised coating produced at 1040 °C for 3 hours with powder containing 6.84 wt% activator content exhibited better corrosion resistance than the substrate in typical PEMFC cathode and anode environments respectively
as well as about six fold decrease in the contact resistance of the substrate at 150 N/cm2 . Hence, the single fuel cell assembled with the bipolar plate coated with the optimised process parameters exhibited a two-fold increase in the maximum power density of the cell with the uncoated bipolar plates
Original languageEnglish
Pages (from-to)384–392
Number of pages9
JournalSurface & Coatings Technology
Volume304
Early online date9 Jul 2016
DOIs
Publication statusPublished - 25 Oct 2016

Fingerprint

Stainless Steel
Proton exchange membrane fuel cells (PEMFC)
fuel cells
stainless steels
Stainless steel
methodology
membranes
optimization
protons
Coatings
coatings
corrosion
Corrosion
cell cathodes
cell anodes
Substrates
Contact resistance
Powders
Corrosion resistance
contact resistance

Cite this

Olabi, Abdul-Ghani ; Benyounis, Khaled ; Stokes, Joseph ; Oladoye, Atinuke ; Carton, James. / Optimisation of pack chromised stainless steel for proton exchange membrane fuel cells bipolar plates using response surface methodology. In: Surface & Coatings Technology. 2016 ; Vol. 304. pp. 384–392.
@article{f7425445976143448edf3c11205df7ec,
title = "Optimisation of pack chromised stainless steel for proton exchange membrane fuel cells bipolar plates using response surface methodology",
abstract = "Stainless steels, as low cost materials, are attractive for proton exchange membrane fuel cells (PEMFC) bipolar plates. However, these metallic alloys require surface coatings or treatments to enhance its corrosion resistance and surface conductivity in PEMFC environments. In this study, response surface methodology based on Box–Behnken design was employed to investigate the influence of time, activator content and temperature on corrosion current density of pack chromised 304 stainless steel in simulated PEMFC environment of aerated 0.5 M H2SO4 + 2 ppm HF at 70 °C. These process parameters were optimised and the performance of the optimised coatings in simulated and real PEMFC environments was investigated. The results indicated that temperature had the most significant influence on the performance of chromised coatings in the selected PEMFC environment. The optimised coating produced at 1040 °C for 3 hours with powder containing 6.84 wt{\%} activator content exhibited better corrosion resistance than the substrate in typical PEMFC cathode and anode environments respectively as well as about six fold decrease in the contact resistance of the substrate at 150 N/cm2 . Hence, the single fuel cell assembled with the bipolar plate coated with the optimised process parameters exhibited a two-fold increase in the maximum power density of the cell with the uncoated bipolar plates",
author = "Abdul-Ghani Olabi and Khaled Benyounis and Joseph Stokes and Atinuke Oladoye and James Carton",
year = "2016",
month = "10",
day = "25",
doi = "10.1016/j.surfcoat.2016.07.023",
language = "English",
volume = "304",
pages = "384–392",
journal = "Surface & Coatings Technology",
issn = "0257-8972",
publisher = "Elsevier B.V.",

}

Optimisation of pack chromised stainless steel for proton exchange membrane fuel cells bipolar plates using response surface methodology. / Olabi, Abdul-Ghani; Benyounis, Khaled; Stokes, Joseph; Oladoye, Atinuke; Carton, James.

In: Surface & Coatings Technology, Vol. 304, 25.10.2016, p. 384–392.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Optimisation of pack chromised stainless steel for proton exchange membrane fuel cells bipolar plates using response surface methodology

AU - Olabi, Abdul-Ghani

AU - Benyounis, Khaled

AU - Stokes, Joseph

AU - Oladoye, Atinuke

AU - Carton, James

PY - 2016/10/25

Y1 - 2016/10/25

N2 - Stainless steels, as low cost materials, are attractive for proton exchange membrane fuel cells (PEMFC) bipolar plates. However, these metallic alloys require surface coatings or treatments to enhance its corrosion resistance and surface conductivity in PEMFC environments. In this study, response surface methodology based on Box–Behnken design was employed to investigate the influence of time, activator content and temperature on corrosion current density of pack chromised 304 stainless steel in simulated PEMFC environment of aerated 0.5 M H2SO4 + 2 ppm HF at 70 °C. These process parameters were optimised and the performance of the optimised coatings in simulated and real PEMFC environments was investigated. The results indicated that temperature had the most significant influence on the performance of chromised coatings in the selected PEMFC environment. The optimised coating produced at 1040 °C for 3 hours with powder containing 6.84 wt% activator content exhibited better corrosion resistance than the substrate in typical PEMFC cathode and anode environments respectively as well as about six fold decrease in the contact resistance of the substrate at 150 N/cm2 . Hence, the single fuel cell assembled with the bipolar plate coated with the optimised process parameters exhibited a two-fold increase in the maximum power density of the cell with the uncoated bipolar plates

AB - Stainless steels, as low cost materials, are attractive for proton exchange membrane fuel cells (PEMFC) bipolar plates. However, these metallic alloys require surface coatings or treatments to enhance its corrosion resistance and surface conductivity in PEMFC environments. In this study, response surface methodology based on Box–Behnken design was employed to investigate the influence of time, activator content and temperature on corrosion current density of pack chromised 304 stainless steel in simulated PEMFC environment of aerated 0.5 M H2SO4 + 2 ppm HF at 70 °C. These process parameters were optimised and the performance of the optimised coatings in simulated and real PEMFC environments was investigated. The results indicated that temperature had the most significant influence on the performance of chromised coatings in the selected PEMFC environment. The optimised coating produced at 1040 °C for 3 hours with powder containing 6.84 wt% activator content exhibited better corrosion resistance than the substrate in typical PEMFC cathode and anode environments respectively as well as about six fold decrease in the contact resistance of the substrate at 150 N/cm2 . Hence, the single fuel cell assembled with the bipolar plate coated with the optimised process parameters exhibited a two-fold increase in the maximum power density of the cell with the uncoated bipolar plates

U2 - 10.1016/j.surfcoat.2016.07.023

DO - 10.1016/j.surfcoat.2016.07.023

M3 - Article

VL - 304

SP - 384

EP - 392

JO - Surface & Coatings Technology

JF - Surface & Coatings Technology

SN - 0257-8972

ER -