SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2023, Vol. 55 ›› Issue (3): 34-40.DOI: 10.1016/j.cjche.2022.04.020

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Self-deposition for mesoporous carbon nanosheet with supercapacitor application

Juan Du1, Aibing Chen1, Senlin Hou2, Xueqing Gao1   

  1. 1. College of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China;
    2. The Second Hospital of Hebei Medical University, Shijiazhuang 050000, China
  • Received:2021-10-30 Revised:2022-04-27 Online:2023-06-03 Published:2023-03-28
  • Contact: Aibing Chen,E-mail:chen_ab@163.com;Senlin Hou,E-mail:housenlin2006@126.com
  • Supported by:
    We thank the Natural Science Foundation of Hebei (B02020208088), S&T Program of Hebei (20544401D, 20314401D, 206Z4406G, 21314402D, B2021208074, 21344601D), Tianjin Science and Technology Project (19YFSLQY00070).

Self-deposition for mesoporous carbon nanosheet with supercapacitor application

Juan Du1, Aibing Chen1, Senlin Hou2, Xueqing Gao1   

  1. 1. College of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China;
    2. The Second Hospital of Hebei Medical University, Shijiazhuang 050000, China
  • 通讯作者: Aibing Chen,E-mail:chen_ab@163.com;Senlin Hou,E-mail:housenlin2006@126.com
  • 基金资助:
    We thank the Natural Science Foundation of Hebei (B02020208088), S&T Program of Hebei (20544401D, 20314401D, 206Z4406G, 21314402D, B2021208074, 21344601D), Tianjin Science and Technology Project (19YFSLQY00070).

Abstract: Porous carbon sheets have wide application prospects in many fields, especially in energy storage of supercapacitor due to the features combining both 2D structure and porous architectures. Herein, a self-deposition approach is proposed to obtain N-doped mesoporous carbon nanosheets (N-MCNs), using 3-aminophenol (3-AF) as precursor and Mg(OH)2 sheet as hard template. This process realizes the direct carbon formation using 3-AF monomer as carbon precursor under the catalysis of hard template avoiding the polymerization and utilization of solvent. The mass ratio of 3-AF to Mg(OH)2 plays an important role in determining the pore structures and the resulting capacitance behavior. The results show that N-MCNs with a mass ratio of 3-AF and Mg(OH)2 of 1:1 have good electrochemical behavior for supercapacitors. This N-MCNs based electrode exhibits a high capacitance of 240 F·g-1 at 1 A·g-1, good rate performance (75.4% retention ratio at 20 A·g-1), and high cycling stability with 98.3% initial capacitance retained after 10000 cycles. Symmetric supercapacitors on N-MCNs achieve energy density of 18.2 W·h·kg-1 and power density of 0.4 kW·kg-1 operated within a wide potential range of 0–1.6 V in 1.0 mol·L-1 Na2SO4 solution, exhibiting its potential for electrode materials with high performance.

Key words: Monomer self-deposition, Mg(OH)2 catalysis, Hard template, Carbon nanosheet, Supercapacitor

摘要: Porous carbon sheets have wide application prospects in many fields, especially in energy storage of supercapacitor due to the features combining both 2D structure and porous architectures. Herein, a self-deposition approach is proposed to obtain N-doped mesoporous carbon nanosheets (N-MCNs), using 3-aminophenol (3-AF) as precursor and Mg(OH)2 sheet as hard template. This process realizes the direct carbon formation using 3-AF monomer as carbon precursor under the catalysis of hard template avoiding the polymerization and utilization of solvent. The mass ratio of 3-AF to Mg(OH)2 plays an important role in determining the pore structures and the resulting capacitance behavior. The results show that N-MCNs with a mass ratio of 3-AF and Mg(OH)2 of 1:1 have good electrochemical behavior for supercapacitors. This N-MCNs based electrode exhibits a high capacitance of 240 F·g-1 at 1 A·g-1, good rate performance (75.4% retention ratio at 20 A·g-1), and high cycling stability with 98.3% initial capacitance retained after 10000 cycles. Symmetric supercapacitors on N-MCNs achieve energy density of 18.2 W·h·kg-1 and power density of 0.4 kW·kg-1 operated within a wide potential range of 0–1.6 V in 1.0 mol·L-1 Na2SO4 solution, exhibiting its potential for electrode materials with high performance.

关键词: Monomer self-deposition, Mg(OH)2 catalysis, Hard template, Carbon nanosheet, Supercapacitor