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In Situ Ni-Doped Hierarchically Porous Carbon Nanofibers Derived from Polyacrylonitrile/Pitch for Hydrogen Storage at Ambient Temperature

Author

Listed:
  • Fuquan Song

    (School of Petroleum and Natural Gas Engineering, Changzhou University, Changzhou 213164, China
    School of Petrochemical Engineering and Environment, Zhejiang Ocean University, Zhoushan 316022, China)

  • Lintao Huang

    (School of Petrochemical Engineering and Environment, Zhejiang Ocean University, Zhoushan 316022, China)

  • Heying Ding

    (School of Petrochemical Engineering and Environment, Zhejiang Ocean University, Zhoushan 316022, China)

  • Shiming Zhang

    (Exploration and Development Research Institute, Shengli Oilfield Company, SINOPEC, Dongying 257015, China)

  • Jinbiao Yu

    (Exploration and Development Research Institute, Shengli Oilfield Company, SINOPEC, Dongying 257015, China)

Abstract

Porous carbon nanofibers doped with nickel (Ni) were successfully fabricated through electrospinning, carbonization, and CO 2 activation techniques using polyacrylonitrile (PAN) and petroleum pitch as carbon sources and nickel acetate as the dopant. During the activation process, Ni was reduced and dispersed in situ on the carbon matrix. The effects of Ni doping content on the morphology and structure of the carbon nanofibers were systematically investigated using SEM, TEM, XPS, XRD, Raman, and BET analyses. The experimental results revealed that the prepared materials had a hierarchically porous structure and that Ni nanoparticles played multiple roles in the preparation process, including catalyzing pore expansion and catalytic graphitization. However, particle agglomeration and fiber fracture occurred when the Ni content was high. In the adsorption/desorption experiments, the sample with 10 wt% Ni doping exhibited the highest specific surface area and micropore volume of 750.7 m 2 /g and 0.258 cm 3 /g, respectively, and had the maximum hydrogen storage capacity of 1.39 wt% at 298 K and 10 MPa. The analyses suggested that the hydrogen adsorption mechanism contributed to enhanced H 2 adsorption by the spillover effect in addition to physisorption.

Suggested Citation

  • Fuquan Song & Lintao Huang & Heying Ding & Shiming Zhang & Jinbiao Yu, 2023. "In Situ Ni-Doped Hierarchically Porous Carbon Nanofibers Derived from Polyacrylonitrile/Pitch for Hydrogen Storage at Ambient Temperature," Sustainability, MDPI, vol. 15(11), pages 1-13, May.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:11:p:8722-:d:1158199
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    References listed on IDEAS

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    1. Musyoka, Nicholas M. & Wdowin, Magdalena & Rambau, Khavharendwe M. & Franus, Wojciech & Panek, Rafał & Madej, Jarosław & Czarna-Juszkiewicz, Dorota, 2020. "Synthesis of activated carbon from high-carbon coal fly ash and its hydrogen storage application," Renewable Energy, Elsevier, vol. 155(C), pages 1264-1271.
    2. Zhang, Huiyan & Zhu, Yiwen & Liu, Qingyu & Li, Xiaowen, 2022. "Preparation of porous carbon materials from biomass pyrolysis vapors for hydrogen storage," Applied Energy, Elsevier, vol. 306(PB).
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