| DOI | Resolve DOI: https://doi.org/10.1016/j.jelechem.2020.113997 |
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| Author | Search for: Jalilpour, Soghra1; Search for: Bock, Christina1; Search for: Macdougall, Barry R.1; Search for: Hall, David S.1ORCID identifier: https://orcid.org/0000-0002-7485-8566 |
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| Affiliation | - National Research Council of Canada. Energy, Mining and Environment
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| Format | Text, Article |
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| Subject | fuel cells; ORR; MOR; cobalt/nickel/zinc UPD; cation/anion impurity |
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| Abstract | Understanding the effect of metal solution contaminants on the methanol oxidation reaction (MOR) and oxygen reduction reaction (ORR) activities of direct methanol fuel cells (DMFCs) is critical in the enhancement of this technology. In this study, the effect of various concentrations of metal salt solutions (i.e., Co, Ni and Zn with sulfate and nitrate as counter-anions) on polycrystalline Pt and PtxRuy electro-catalytic activities during MOR and ORR are systematically investigated. The results show a decrease in MOR and ORR activities as the concentration of metal salt solutions increased. The influence of counter-anions (i.e., NO₃⁻ and SO4₂⁻) adsorption on the Pt electro-catalyst activity was further investigated. The results showed that a combined effect of adsorbed counter-anions as well as hydrated metal cations may be responsible for the decrease in the electro-catalytic activity of Pt during the MOR and ORR. |
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| Publication date | 2020-02-21 |
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| Publisher | Elsevier |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 806219c6-d7a9-4885-9773-72e14df8e507 |
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| Record created | 2020-07-03 |
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| Record modified | 2021-09-17 |
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