Nitrogen-doped carbon supported platinum catalyst via direct soft nitriding for high-performance polymer electrolyte membrane fuel cell

Dong Jun Seo, Myeong Ri Kim, Seung Yong Yang, Won Young Choi, Hyunguk Choi, Seo Won Choi, Myeong Hwa Lee, Young Gi Yoon, Min Ho Seo, Hansung Kim, Chi Young Jung, Tae Young Kim

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Control of doping levels of nitrogen to carbon support plays a key role to enhance the catalytic activity of the Pt/C catalyst toward oxygen reduction reaction. Mass-production of such materials is still challenging issue for the practical use. Here, we demonstrate a facile approach for fabrication of the nitrogen-doped Pt/C catalysts via direct soft nitriding of the Pt/C catalyst. The commercial 40 wt% Pt/C is first physically mixed with urea and then heat-treated at 300 °C, which allowed a massive production of the 6.6 atom% nitrogen-doped Pt/C catalysts without sacrificing the Pt catalysts. The specific activity increases by 46.9% after the thermal treatment, while the particle size and crystallinity of Pt remain similar to those before the thermal treatment. As a result, the fuel cell test showed a notable increase in the current density by 100% and 18.5% at 0.8 V and 0.5 V, respectively, for the membrane electrode assembly employing urea treated Pt/C catalyst. Hence, the soft nitriding by urea offers great promise as a simple, energy-efficient and eco-friendly way in manufacturing the nitrogen-doped Pt/C catalyst for the polymer electrolyte membrane fuel cell applications.

Original languageEnglish
Pages (from-to)17873-17879
Number of pages7
JournalInternational Journal of Hydrogen Energy
Volume43
Issue number37
DOIs
Publication statusPublished - 2018 Sep 13

Bibliographical note

Funding Information:
This work was conducted under the framework of the research and development program of the Korea Institute of Energy Research ( B8-2423 ).

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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