Anodic Behaviour of High Nitrogen-Bearing Steels in PEMFC Environments

Heli Wang; John A. Turner

doi:10.1016/j.jpowsour.2008.02.085

Anodic Behaviour of High Nitrogen-Bearing Steels in PEMFC Environments

Heli Wang, John A. Turner

Chemistry and Nanoscience

National Renewable Energy Laboratory

Research output: Contribution to journal › Article › peer-review

28 Scopus Citations

Abstract

High nitrogen-bearing stainless steels, AISI Type 201 and AL219, were investigated in simulated polymer electrolyte membrane fuel cell (PEMFC) environments to assess the use of these materials in fuel cell bipolar plate applications. Both steels exhibit better corrosion behavior than 316L steel in the same environments. Type 201 steel shows similar but lower interfacial contact resistance (ICR) than 316L, while AL219 steel shows higher ICR than 316L. X-ray photoelectron spectroscopy (XPS) analysis shows that the air-formed films on Type 201 and AL219 are composed of iron oxides, chromium oxide, and manganese oxide. Iron oxides dominate the composition of the air-formed film, specially the outer layer. Chromium oxide dominates passive films. Surface film thicknesses were estimated. The results suggest that high nitrogen-bearing stainless steels are promising materials for PEMFC bipolar plates.

Original language	American English
Pages (from-to)	791-796
Number of pages	6
Journal	Journal of Power Sources
Volume	180
Issue number	2
DOIs	https://doi.org/10.1016/j.jpowsour.2008.02.085 https://doi.org/10.1016/j.jpowsour.2008.02.085
State	Published - 1 Jun 2008

NREL Publication Number

NREL/JA-560-42785

Keywords

Bipolar plate
Corrosion
Fuel cell
PEMFC
Stainless steel
XPS

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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title = "Anodic Behaviour of High Nitrogen-Bearing Steels in PEMFC Environments",

abstract = "High nitrogen-bearing stainless steels, AISI Type 201 and AL219, were investigated in simulated polymer electrolyte membrane fuel cell (PEMFC) environments to assess the use of these materials in fuel cell bipolar plate applications. Both steels exhibit better corrosion behavior than 316L steel in the same environments. Type 201 steel shows similar but lower interfacial contact resistance (ICR) than 316L, while AL219 steel shows higher ICR than 316L. X-ray photoelectron spectroscopy (XPS) analysis shows that the air-formed films on Type 201 and AL219 are composed of iron oxides, chromium oxide, and manganese oxide. Iron oxides dominate the composition of the air-formed film, specially the outer layer. Chromium oxide dominates passive films. Surface film thicknesses were estimated. The results suggest that high nitrogen-bearing stainless steels are promising materials for PEMFC bipolar plates.",

keywords = "Bipolar plate, Corrosion, Fuel cell, PEMFC, Stainless steel, XPS",

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AU - Wang, Heli

AU - Turner, John A.

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N2 - High nitrogen-bearing stainless steels, AISI Type 201 and AL219, were investigated in simulated polymer electrolyte membrane fuel cell (PEMFC) environments to assess the use of these materials in fuel cell bipolar plate applications. Both steels exhibit better corrosion behavior than 316L steel in the same environments. Type 201 steel shows similar but lower interfacial contact resistance (ICR) than 316L, while AL219 steel shows higher ICR than 316L. X-ray photoelectron spectroscopy (XPS) analysis shows that the air-formed films on Type 201 and AL219 are composed of iron oxides, chromium oxide, and manganese oxide. Iron oxides dominate the composition of the air-formed film, specially the outer layer. Chromium oxide dominates passive films. Surface film thicknesses were estimated. The results suggest that high nitrogen-bearing stainless steels are promising materials for PEMFC bipolar plates.

AB - High nitrogen-bearing stainless steels, AISI Type 201 and AL219, were investigated in simulated polymer electrolyte membrane fuel cell (PEMFC) environments to assess the use of these materials in fuel cell bipolar plate applications. Both steels exhibit better corrosion behavior than 316L steel in the same environments. Type 201 steel shows similar but lower interfacial contact resistance (ICR) than 316L, while AL219 steel shows higher ICR than 316L. X-ray photoelectron spectroscopy (XPS) analysis shows that the air-formed films on Type 201 and AL219 are composed of iron oxides, chromium oxide, and manganese oxide. Iron oxides dominate the composition of the air-formed film, specially the outer layer. Chromium oxide dominates passive films. Surface film thicknesses were estimated. The results suggest that high nitrogen-bearing stainless steels are promising materials for PEMFC bipolar plates.

KW - Bipolar plate

KW - Corrosion

KW - Fuel cell

KW - PEMFC

KW - Stainless steel

KW - XPS

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Anodic Behaviour of High Nitrogen-Bearing Steels in PEMFC Environments

Abstract

NREL Publication Number

Keywords

UN SDGs

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