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Journal of Inorganic Materials, Volume. 35, Issue 8, 953(2020)

Durability of Fe-N/C Catalysts with Different Nanostructures for Electrochemical Oxygen Reduction in Alkaline Solution

Sheng DING1... Kai NING1, Binxia YUAN1, Weiguo PAN1,2, Shibin YIN3, and Jianfeng LIU1,23,* |Show fewer author(s)
Author Affiliations
  • 1College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
  • 2Key Laboratory of Environmental Protection Technology for Clean Power Generation in Machinery Industry, Shanghai 200090, China
  • 3Key Laboratory of New Processing Technology for Non-ferrous Metals and Materials (Ministry of Education), Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials, Nanning 530004, China
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    Figures & Tables(9)
    SEM images of (a) FeNC-DCDA and (b) FeNC-MM; HRTEM images of (c) FeNC-DCDA and (d) FeNC-MM with insets showing corresponding FFT patterns; TEM images of (e) FeNC-DCDA and (f) FeNC-MM with insets showing corresponding SAED images
    1. SEM images of (a) FeNC-DCDA and (b) FeNC-MM; HRTEM images of (c) FeNC-DCDA and (d) FeNC-MM with insets showing corresponding FFT patterns; TEM images of (e) FeNC-DCDA and (f) FeNC-MM with insets showing corresponding SAED images

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    XRD patterns (a), XPS wide scan (b), XPS C1s spectra (c), XPS N1s spectra (d) for FeNC-DCDA and FeNC-MM
    2. XRD patterns (a), XPS wide scan (b), XPS C1s spectra (c), XPS N1s spectra (d) for FeNC-DCDA and FeNC-MM

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    LSV curves (a), CV curves (b), H2O2 yield (c) and electron transfer number (d) for Pt/C, FeNC-DCDA, FeNC-MM and KB in O2-saturated 0.1 mol·L-1 KOH at 1600 r·min-1
    3. LSV curves (a), CV curves (b), H2O2 yield (c) and electron transfer number (d) for Pt/C, FeNC-DCDA, FeNC-MM and KB in O2-saturated 0.1 mol·L-1 KOH at 1600 r·min-1

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    CV curves in N2-saturated 0.1 mol·L-1 KOH and LSV curves in O2-saturated 0.1 mol·L-1 KOH of the catalysts for 30000 load potential cycles(a-b) Pt/C; (c-d) FeNC-MM; (e-f) FeNC-DCDA
    4. CV curves in N2-saturated 0.1 mol·L-1 KOH and LSV curves in O2-saturated 0.1 mol·L-1 KOH of the catalysts for 30000 load potential cycles(a-b) Pt/C; (c-d) FeNC-MM; (e-f) FeNC-DCDA

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    HRTEM images of FeNC-DCDA
    S1. HRTEM images of FeNC-DCDA

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    LSV curves of as-prepared and acid-leached FeNC-DCDA measured in O2-saturated 0.1 mol·L-1 KOH (a) and LSV curves of SCN- poisoned FeNC-DCDA measured in O2-saturated 0.1 mol·L-1 KOH (1600 r·min-1, 10 mV s-1) (b)
    S2. LSV curves of as-prepared and acid-leached FeNC-DCDA measured in O2-saturated 0.1 mol·L-1 KOH (a) and LSV curves of SCN- poisoned FeNC-DCDA measured in O2-saturated 0.1 mol·L-1 KOH (1600 r·min-1, 10 mV s-1) (b)

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    Comparison of maximum current densities of catalysts before and after the durability tests
    S3. Comparison of maximum current densities of catalysts before and after the durability tests

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    • Table 1.

      Elemental compositions of Fe-N/C catalysts synthesized with different nitrogen sources obtained from XPS analysis

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      Table 1.

      Elemental compositions of Fe-N/C catalysts synthesized with different nitrogen sources obtained from XPS analysis

      CompositonFeNC-DCDA/at%FeNC-MM/at%
      Carbon97.0596.14
      Nitrogen0.251.85
      Oxygen2.211.54
      Iron0.490.48

    • Table 2.

      Nitrogen contents and deconvoluted N 1s peak positions in Fe-N/C catalysts from XPS data

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      Table 2.

      Nitrogen contents and deconvoluted N 1s peak positions in Fe-N/C catalysts from XPS data

      CatalystN-CFe-NxGraphitic nitrogenOxygenated nitrogen
      Position/eVFraction/%Position/eVFraction/%Position/eVFraction/%Position/eVFraction/%
      FeNC-DCDA398.7135.66399.8210.02401.3824.79403.5129.52
      FeNC-MM398.6834.54400.078.4401.2613.2404.243.86
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    Sheng DING, Kai NING, Binxia YUAN, Weiguo PAN, Shibin YIN, Jianfeng LIU. Durability of Fe-N/C Catalysts with Different Nanostructures for Electrochemical Oxygen Reduction in Alkaline Solution[J]. Journal of Inorganic Materials, 2020, 35(8): 953

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    Paper Information

    Category: RESEARCH LETTERS

    Received: Oct. 28, 2019

    Accepted: --

    Published Online: Mar. 15, 2021

    The Author Email: LIU Jianfeng (janice.liujianfeng@gmail.com)

    DOI:10.15541/jim20190547

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology