In situ metal ion contamination and the effects on proton exchange membrane fuel cell performance
| Autor: | Mark Ricketts, James A. Adams, Mark S. Sulek, James Waldecker, Steve Kaberline |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
chemistry.chemical_classification
Materials science Sulfide Renewable Energy Sustainability and the Environment Metal ions in aqueous solution Energy Engineering and Power Technology Proton exchange membrane fuel cell Contamination Direct-ethanol fuel cell Hydrogen vehicle Metal Membrane Chemical engineering chemistry visual_art visual_art.visual_art_medium Electrical and Electronic Engineering Physical and Theoretical Chemistry Nuclear chemistry |
| Zdroj: | Journal of Power Sources. 196:8967-8972 |
| ISSN: | 0378-7753 |
| DOI: | 10.1016/j.jpowsour.2011.01.086 |
| Popis: | Automotive fuel cell technology has made considerable progress, and hydrogen fuel cell vehicles are regarded as a possible long-term solution to reduce carbon dioxide emissions, reduce fossil fuel dependency and increase energy efficiency. Even though great strides have been made, durability is still an issue. One key challenge is controlling MEA contamination. Metal ion contamination within the membrane and the effects on fuel cell performance were investigated. Given the possible benefits of using stainless steel or aluminum for balance-of-plant components or bipolar plates, cations of Al, Fe, Ni and Cr were studied. Membranes were immersed in metal sulfide solutions of varying concentration and then assembled into fuel cell MEAs tested in situ. The ranking of the four transition metals tested in terms of the greatest reduction in fuel cell performance was: Al3+ ≫ Fe2+ > Ni2+, Cr3+. For iron-contaminated membranes, no change in cell performance was detected until the membrane conductivity loss was greater than approximately 15%. |
| Databáze: | OpenAIRE |
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