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Fe-N-C Boosts the Stability of Supported Platinum Nanoparticles for Fuel Cells.
Xiao, Fei; Wang, Yian; Xu, Gui-Liang; Yang, Fei; Zhu, Shangqian; Sun, Cheng-Jun; Cui, Yingdan; Xu, Zhiwen; Zhao, Qinglan; Jang, Juhee; Qiu, Xiaoyi; Liu, Ershuai; Drisdell, Walter S; Wei, Zidong; Gu, Meng; Amine, Khalil; Shao, Minhua.
Afiliação
  • Xiao F; Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon999077, Hong Kong, China.
  • Wang Y; Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon999077, Hong Kong, China.
  • Xu GL; Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois60439, United States.
  • Yang F; Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon999077, Hong Kong, China.
  • Zhu S; Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen518055, China.
  • Sun CJ; Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon999077, Hong Kong, China.
  • Cui Y; X-ray Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois60439, United States.
  • Xu Z; Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon999077, Hong Kong, China.
  • Zhao Q; Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon999077, Hong Kong, China.
  • Jang J; Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon999077, Hong Kong, China.
  • Qiu X; Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon999077, Hong Kong, China.
  • Liu E; Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon999077, Hong Kong, China.
  • Drisdell WS; Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California94720, United States.
  • Wei Z; Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California94720, United States.
  • Gu M; College of Chemistry and Chemical Engineering, Chongqing University, Chongqing400044, China.
  • Amine K; Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen518055, China.
  • Shao M; Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois60439, United States.
J Am Chem Soc ; 144(44): 20372-20384, 2022 Nov 09.
Article em En | MEDLINE | ID: mdl-36283038
ABSTRACT
The poor durability of Pt-based nanoparticles dispersed on carbon black is the challenge for the application of long-life polymer electrolyte fuel cells. Recent work suggests that Fe- and N-codoped carbon (Fe-N-C) might be a better support than conventional high-surface-area carbon. In this work, we find that the electrochemical surface area retention of Pt/Fe-N-C is much better than that of commercial Pt/C during potential cycling in both acidic and basic media. In situ inductively coupled plasma mass spectrometry studies indicate that the Pt dissolution rate of Pt/Fe-N-C is 3 times smaller than that of Pt/C during cycling. Density functional theory calculations further illustrate that the Fe-N-C substrate can provide strong and stable support to the Pt nanoparticles and alleviate the oxide formation by adjusting the electronic structure. The strong metal-substrate interaction, together with a lower metal dissolution rate and highly stable support, may be the reason for the significantly enhanced stability of Pt/Fe-N-C. This finding highlights the importance of carbon support selection to achieve a more durable Pt-based electrocatalyst for fuel cells.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: J Am Chem Soc Ano de publicação: 2022 Tipo de documento: Article
Texto completo
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XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: J Am Chem Soc Ano de publicação: 2022 Tipo de documento: Article