Rational design and construction of nanoporous iron- and nitrogen-doped carbon electrocatalysts for oxygen reduction reaction

Haibo Tan, Jing Tang, Jeonghun Kim, Yusuf Valentino Kaneti, Yong Mook Kang, Yoshiyuki Sugahara, Yusuke Yamauchi

    研究成果: Review article

    8 引用 (Scopus)

    抄録

    Polymer electrolyte membrane fuel cells (PEMFCs) are one of the most sustainable energy conversion systems because of their high energy conversion efficiency and low/zero emissions. Unfortunately, the utilization of highly active but costly platinum (Pt)-based electrocatalysts is necessary to accelerate the sluggish kinetics of cathodic oxygen reduction in PEMFCs for practical applications. Under such circumstance, enormous efforts have been devoted to the exploration of inexpensive and earth-abundant non-noble metal-based electrocatalysts to replace or reduce the usage of Pt-based electrocatalysts in the past decades. Heteroatom-doped carbon materials are among some of the most promising non-noble metal-based electrocatalysts, especially transition metal- and nitrogen-doped carbon materials. According to previous findings, iron- and nitrogen-doped carbon (Fe-N/C) materials derived using various methodologies showed outstanding electrocatalytic activity and impressive durability. Therefore, tremendous progress has been achieved in the synthesis of Fe-N/C and the identification of active sites for oxygen reduction reaction (ORR). Creating ORR active sites, such as Fe-Nx, N/C, and Fe3C@C moieties, increasing the density of active sites and improving the utilization efficiency of ORR active sites are considered as the most effective steps for enhancing the ORR performance of Fe-N/C electrocatalysts. The creation of nanoporous structure of Fe-N/C electrocatalysts plays critical roles in increasing the number of ORR active sites and exposing abundant accessible ORR active sites to electrolytes. In addition, the interconnected nanopores facilitate the mass transfer of reactants and products inside the carbon matrix during the ORR reactions. Therefore, this review pays specific attention to the design and synthetic strategies of Fe-N/C materials with porous structures and their merits toward ORR. Finally, based on the construction of nanoporous structures, the challenges and perspectives with respect to future development of highly active nanoporous Fe-N/C electrocatalysts are discussed.

    元の言語English
    ページ(範囲)1380-1393
    ページ数14
    ジャーナルJournal of Materials Chemistry A
    7
    発行部数4
    DOI
    出版物ステータスPublished - 2019 1 1

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    Electrocatalysts
    Nitrogen
    Carbon
    Iron
    Oxygen
    Proton exchange membrane fuel cells (PEMFC)
    Platinum
    Energy conversion
    Metals
    Nanopores
    Electrolytes
    Conversion efficiency
    Transition metals
    Durability
    Mass transfer
    Earth (planet)
    Kinetics

    ASJC Scopus subject areas

    • Chemistry(all)
    • Renewable Energy, Sustainability and the Environment
    • Materials Science(all)

    これを引用

    Rational design and construction of nanoporous iron- and nitrogen-doped carbon electrocatalysts for oxygen reduction reaction. / Tan, Haibo; Tang, Jing; Kim, Jeonghun; Kaneti, Yusuf Valentino; Kang, Yong Mook; Sugahara, Yoshiyuki; Yamauchi, Yusuke.

    :: Journal of Materials Chemistry A, 巻 7, 番号 4, 01.01.2019, p. 1380-1393.

    研究成果: Review article

    Tan, Haibo ; Tang, Jing ; Kim, Jeonghun ; Kaneti, Yusuf Valentino ; Kang, Yong Mook ; Sugahara, Yoshiyuki ; Yamauchi, Yusuke. / Rational design and construction of nanoporous iron- and nitrogen-doped carbon electrocatalysts for oxygen reduction reaction. :: Journal of Materials Chemistry A. 2019 ; 巻 7, 番号 4. pp. 1380-1393.
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    abstract = "Polymer electrolyte membrane fuel cells (PEMFCs) are one of the most sustainable energy conversion systems because of their high energy conversion efficiency and low/zero emissions. Unfortunately, the utilization of highly active but costly platinum (Pt)-based electrocatalysts is necessary to accelerate the sluggish kinetics of cathodic oxygen reduction in PEMFCs for practical applications. Under such circumstance, enormous efforts have been devoted to the exploration of inexpensive and earth-abundant non-noble metal-based electrocatalysts to replace or reduce the usage of Pt-based electrocatalysts in the past decades. Heteroatom-doped carbon materials are among some of the most promising non-noble metal-based electrocatalysts, especially transition metal- and nitrogen-doped carbon materials. According to previous findings, iron- and nitrogen-doped carbon (Fe-N/C) materials derived using various methodologies showed outstanding electrocatalytic activity and impressive durability. Therefore, tremendous progress has been achieved in the synthesis of Fe-N/C and the identification of active sites for oxygen reduction reaction (ORR). Creating ORR active sites, such as Fe-Nx, N/C, and Fe3C@C moieties, increasing the density of active sites and improving the utilization efficiency of ORR active sites are considered as the most effective steps for enhancing the ORR performance of Fe-N/C electrocatalysts. The creation of nanoporous structure of Fe-N/C electrocatalysts plays critical roles in increasing the number of ORR active sites and exposing abundant accessible ORR active sites to electrolytes. In addition, the interconnected nanopores facilitate the mass transfer of reactants and products inside the carbon matrix during the ORR reactions. Therefore, this review pays specific attention to the design and synthetic strategies of Fe-N/C materials with porous structures and their merits toward ORR. Finally, based on the construction of nanoporous structures, the challenges and perspectives with respect to future development of highly active nanoporous Fe-N/C electrocatalysts are discussed.",
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    AU - Tan, Haibo

    AU - Tang, Jing

    AU - Kim, Jeonghun

    AU - Kaneti, Yusuf Valentino

    AU - Kang, Yong Mook

    AU - Sugahara, Yoshiyuki

    AU - Yamauchi, Yusuke

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    AB - Polymer electrolyte membrane fuel cells (PEMFCs) are one of the most sustainable energy conversion systems because of their high energy conversion efficiency and low/zero emissions. Unfortunately, the utilization of highly active but costly platinum (Pt)-based electrocatalysts is necessary to accelerate the sluggish kinetics of cathodic oxygen reduction in PEMFCs for practical applications. Under such circumstance, enormous efforts have been devoted to the exploration of inexpensive and earth-abundant non-noble metal-based electrocatalysts to replace or reduce the usage of Pt-based electrocatalysts in the past decades. Heteroatom-doped carbon materials are among some of the most promising non-noble metal-based electrocatalysts, especially transition metal- and nitrogen-doped carbon materials. According to previous findings, iron- and nitrogen-doped carbon (Fe-N/C) materials derived using various methodologies showed outstanding electrocatalytic activity and impressive durability. Therefore, tremendous progress has been achieved in the synthesis of Fe-N/C and the identification of active sites for oxygen reduction reaction (ORR). Creating ORR active sites, such as Fe-Nx, N/C, and Fe3C@C moieties, increasing the density of active sites and improving the utilization efficiency of ORR active sites are considered as the most effective steps for enhancing the ORR performance of Fe-N/C electrocatalysts. The creation of nanoporous structure of Fe-N/C electrocatalysts plays critical roles in increasing the number of ORR active sites and exposing abundant accessible ORR active sites to electrolytes. In addition, the interconnected nanopores facilitate the mass transfer of reactants and products inside the carbon matrix during the ORR reactions. Therefore, this review pays specific attention to the design and synthetic strategies of Fe-N/C materials with porous structures and their merits toward ORR. Finally, based on the construction of nanoporous structures, the challenges and perspectives with respect to future development of highly active nanoporous Fe-N/C electrocatalysts are discussed.

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