Synthesis and electrochemical performance of high surface area hierarchical porous carbon with ultrahigh mesoporosity for high-performance supercapacitors

  • Chang Ma
  • Jiankang Xu
  • Qingchao Fan
  • Jingli ShiEmail author
  • Yan Song
Original Paper


Hierarchical porous carbons (HPCs) with both high Brunauer–Emmett–Teller (BET) surface area and high mesoporosity have been synthesized by combination of self-template and one-step carbonization–activation strategy. Ferric citrate (FC) was used as the carbon precursor and self-template source, which not only produced a great number of mesopores with size of 5–20 nm but also brought about high content of graphitic structures by catalytic graphitization. The KOH dosage played a significant role in adjusting the BET surface area and pore size distribution. Importantly, considerable mesopores with width of 2–4 nm were created by KOH, owing to which both high BET surface area and high mesoporosity were achieved. The resultant HPCs exhibited high BET surface area (2055 m2 g−1), large pore volume (2.527 cm3 g−1), and ultrahigh mesoporosity (95.1%). As the electrode material for supercapacitors, the HPC presents a high specific capacitance of 289 F g−1 at 0.2 A g−1 and maintains 205 F g−1 at 30 A g−1 with the capacitance retention of 71% in 6 M KOH electrolyte. Additionally, the HPC-based two-electrode supercapacitor with 1 M Na2SO4 solution as electrolyte delivered a high energy density of 18.24 Wh kg−1 at a power density of 499 W kg−1 and retained 11.63 Wh kg−1 at a power density of 15 kW kg−1. The simple process and excellent performances make HPCs quite promising alternative for application of high-performance supercapacitors in the next generation.


Hierarchical porous carbon Supercapacitors Self-template Ultrahigh mesoporosity 


Funding information

This study is financially supported by the University of Science and Technology Development Fund Planning Project of Tianjin (2017KJ072).

Supplementary material

10008_2019_4316_MOESM1_ESM.docx (366 kb)
ESM 1 (DOCX 366 kb)


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Chang Ma
    • 1
  • Jiankang Xu
    • 1
  • Qingchao Fan
    • 1
  • Jingli Shi
    • 1
    Email author
  • Yan Song
    • 2
  1. 1.Tianjin Municipal Key Laboratory of Advanced Fiber and Energy Storage TechnologyTianjin Polytechnic UniversityTianjinChina
  2. 2.CAS Key Laboratory of Carbon Materials, Institute of Coal ChemistryChinese Academy of SciencesTaiyuanChina

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