Citation: Qi-qi ZHUANG, Jing-pei CAO, Yan WU, Yu-lei WEI, Zhi-hui YANG, Xiao-yan ZHAO. Preparation of three-dimensional coal tar pitch based porous carbon by α-Fe₂O₃ template for high performance supercapacitor[J]. Journal of Fuel Chemistry and Technology, ;2022, 50(4): 408-417. doi: 10.19906/j.cnki.JFCT.2021084 shu

Preparation of three-dimensional coal tar pitch based porous carbon by α-Fe₂O₃ template for high performance supercapacitor

Jiangsu Province Engineering Research Center of Fine Utilization of Carbon Resources (Ministry of Education), China University of Mining & Technology, Xuzhou 221116, China

Corresponding author: Jing-pei CAO, caojingpei@cumt.edu.cn
Received Date: 10 August 2021
Revised Date: 19 September 2021

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In this paper, three-dimensional hierarchical porous carbons (HPCs) were prepared using coal tar pitch as raw material and α-Fe₂O₃ as template combined with KOH activation. The as-prepared HPC-3 showed large specific surface area (2003 m²/g), which was due to the synergistic effect of the occupation of α-Fe₂O₃ (certain mesopores and macropores) and KOH activation (abundant micropores). And the assembled electric double layer capacitor by HPC-3 exhibited the largest specific capacitance (295 F/g) and superior cycling stability (specific capacitance retention of 97.8% after 10000 cycles) in 6 mol/L KOH electrolyte. Meanwhile, the high working voltage (3.6 V) and energy density (60.0 (W·h)/kg) were obtained when it was applied to EMIMBF₄ electrolyte.
- three-dimensional porous carbon,
- supercapacitor,
- α-Fe₂O₃ template,
- coal tar pitch,
- ionic liquid electrolyte
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Preparation of three-dimensional coal tar pitch based porous carbon by α-Fe2O3 template for high performance supercapacitor

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Preparation of three-dimensional coal tar pitch based porous carbon by α-Fe₂O₃ template for high performance supercapacitor