Effect of corrossion on the electrical conductivity of metals and polymer composite

Mohd Anas Mohd Sabri, Abu Bakar Sulong, Fung Kuon Chin, Jaafar Sahari

Research output: Contribution to journalArticle

Abstract

Applications of a metallic bipolar plate in a proton exchange membrane fuel cell (PEMFC) are currently being developed in the market. The main challenge for metal usage is the effect of corrosion on the overall performance of a PEMFC. The materials used in this study are stainless steel 316L (SS316L), aluminum 6061, titanium, compressed graphite, and graphite/CNTs/epoxy nanocomposite. The materials and its measurements were studied using digital multimeter to obtain the conductivity of the material, potentiostatic test to determine the corrosion rate, pH meter to determine the pH level of the sulfuric acid, and microscope to study the topography surface of the corrosion material before and after the corrosion test. Results show that aluminum corrosion is the fastest and the most severe, followed by SS316L, titanium, compressed graphite, and graphite/CNTs/epoxy nanocomposite. Corrosion decreases the electrical conductivity of the material and the pH level of sulfuric acid, consequently making the material dull and coarse. Metal plates face more severe corrosion problems compared with compressed graphite and graphite/CNTs/epoxy nanocomposite. Despite the corrosion problems it creates, metal use is low cost, easy to fabricate, light, and has good heat and electric conductivity. Hence, the development of the metallic bipolar plate shows high potential, and its modification is encouraged.

Original languageEnglish
Pages (from-to)81-85
Number of pages5
JournalJurnal Teknologi (Sciences and Engineering)
Volume59
Issue numberSUPPL.2
Publication statusPublished - 2012

Fingerprint

Graphite
Corrosion
Composite materials
Polymers
Metals
Nanocomposites
Proton exchange membrane fuel cells (PEMFC)
Sulfuric acid
Stainless steel
Titanium
pH meters
Aluminum corrosion
Plate metal
Surface topography
Corrosion rate
Electric Conductivity
Microscopes
Aluminum
Costs

Keywords

  • Bipolar plate
  • Composite plate
  • Corrosion
  • Metal plate
  • PEMFC
  • Potentiostatic test

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Effect of corrossion on the electrical conductivity of metals and polymer composite. / Mohd Sabri, Mohd Anas; Sulong, Abu Bakar; Chin, Fung Kuon; Sahari, Jaafar.

In: Jurnal Teknologi (Sciences and Engineering), Vol. 59, No. SUPPL.2, 2012, p. 81-85.

Research output: Contribution to journalArticle

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