Gabreab, E M*; Hinds, G; Fearn, S*; Hodgson, D*; Millichamp, J*; Shearing, P R*; Brett, D J L* (2014) An electrochemical treatment to improve corrosion and contact resistance of stainless steel bipolar plates used in polymer electrolyte fuel cells. J. Power Sources, 245. pp. 1014-1026.

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Abstract

An electrochemical surface treatment is presented that improves the properties of stainless steel (316SS) relevant to use as a bipolar plate material for polymer electrolyte fuel cell (PEFC) operation. The process is an anodic treatment, whereby the material is polarised positive of the transpassive region. Potentiodynamic corrosion testing, chemical and morphological surface characterisation and interfacial contact resistance measurements indicate that the improved properties of 316SS are primarily a consequence of an enrichment of Cr at the near-surface of the material. The surface treatment increases the corrosion resistance and significantly reduces interfacial contact resistance (ICR).

Item Type:	Article
Subjects:	Advanced Materials Advanced Materials > Fuels Cells
Identification number/DOI:	10.1016/j.jpowsour.2013.07.041
Last Modified:	02 Feb 2018 13:13
URI:	http://eprintspublications.npl.co.uk/id/eprint/5990

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