Synthesis and characterization of PtNx/C as methanol-tolerant oxygen reduction electrocatalysts for a direct methanol fuel cell

Jong Gil Oh; Hansung Kim

doi:10.1016/j.jpowsour.2008.02.095

Synthesis and characterization of PtN_x/C as methanol-tolerant oxygen reduction electrocatalysts for a direct methanol fuel cell

Jong Gil Oh, Hansung Kim

Department of Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article

25 Citations (Scopus)

Abstract

Platinum nitride supported on carbon (PtN_x/C) is synthesized by the novel strategy of chelating the Pt precursor followed by pyrolysis and is characterized as a possible cathode electrocatalyst for direct methanol fuel cells (DMFCs). The prepared PtN_x/C is shown to possess high methanol tolerance and catalytic activity for the oxygen reduction reaction (ORR). The results indicate that the temperature of the heat treatment and the molar ratio of Pt to N in the precursor solution play important roles in the catalytic performance. A sample of PtN_x/C prepared at 700 °C with a Pt:N ratio of 1:2 shows a significant decrease in the potential loss associated with the mixed potential and the poisoning effect by adsorbed methanol, and this results in a high power density of 180 mW cm^-2. The performance is 30% higher than that of Pt/C under 4 M of methanol concentration.

Original language	English
Pages (from-to)	74-78
Number of pages	5
Journal	Journal of Power Sources
Volume	181
Issue number	1
DOIs	https://doi.org/10.1016/j.jpowsour.2008.02.095
Publication status	Published - 2008 Jun 15

All Science Journal Classification (ASJC) codes

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

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Oh, J. G., & Kim, H. (2008). Synthesis and characterization of PtN_x/C as methanol-tolerant oxygen reduction electrocatalysts for a direct methanol fuel cell. Journal of Power Sources, 181(1), 74-78. https://doi.org/10.1016/j.jpowsour.2008.02.095

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title = "Synthesis and characterization of PtNx/C as methanol-tolerant oxygen reduction electrocatalysts for a direct methanol fuel cell",

abstract = "Platinum nitride supported on carbon (PtNx/C) is synthesized by the novel strategy of chelating the Pt precursor followed by pyrolysis and is characterized as a possible cathode electrocatalyst for direct methanol fuel cells (DMFCs). The prepared PtNx/C is shown to possess high methanol tolerance and catalytic activity for the oxygen reduction reaction (ORR). The results indicate that the temperature of the heat treatment and the molar ratio of Pt to N in the precursor solution play important roles in the catalytic performance. A sample of PtNx/C prepared at 700 °C with a Pt:N ratio of 1:2 shows a significant decrease in the potential loss associated with the mixed potential and the poisoning effect by adsorbed methanol, and this results in a high power density of 180 mW cm-2. The performance is 30% higher than that of Pt/C under 4 M of methanol concentration.",

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AU - Kim, Hansung

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N2 - Platinum nitride supported on carbon (PtNx/C) is synthesized by the novel strategy of chelating the Pt precursor followed by pyrolysis and is characterized as a possible cathode electrocatalyst for direct methanol fuel cells (DMFCs). The prepared PtNx/C is shown to possess high methanol tolerance and catalytic activity for the oxygen reduction reaction (ORR). The results indicate that the temperature of the heat treatment and the molar ratio of Pt to N in the precursor solution play important roles in the catalytic performance. A sample of PtNx/C prepared at 700 °C with a Pt:N ratio of 1:2 shows a significant decrease in the potential loss associated with the mixed potential and the poisoning effect by adsorbed methanol, and this results in a high power density of 180 mW cm-2. The performance is 30% higher than that of Pt/C under 4 M of methanol concentration.

AB - Platinum nitride supported on carbon (PtNx/C) is synthesized by the novel strategy of chelating the Pt precursor followed by pyrolysis and is characterized as a possible cathode electrocatalyst for direct methanol fuel cells (DMFCs). The prepared PtNx/C is shown to possess high methanol tolerance and catalytic activity for the oxygen reduction reaction (ORR). The results indicate that the temperature of the heat treatment and the molar ratio of Pt to N in the precursor solution play important roles in the catalytic performance. A sample of PtNx/C prepared at 700 °C with a Pt:N ratio of 1:2 shows a significant decrease in the potential loss associated with the mixed potential and the poisoning effect by adsorbed methanol, and this results in a high power density of 180 mW cm-2. The performance is 30% higher than that of Pt/C under 4 M of methanol concentration.

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