Preparation of three-dimensional coal tar pitch based porous carbon by α-Fe<sub>2</sub>O<sub>3</sub> template for high performance supercapacitor

ZHUANG Qi-qi; CAO Jing-pei; WU Yan; WEI Yu-lei; YANG Zhi-hui; ZHAO Xiao-yan

doi:10.19906/j.cnki.JFCT.2021084

Volume 50 Issue 4

Apr. 2022

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Article Navigation > Journal of Fuel Chemistry and Technology > 2022 > 50(4): 408-417

ZHUANG Qi-qi, CAO Jing-pei, WU Yan, WEI Yu-lei, YANG Zhi-hui, ZHAO Xiao-yan. 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

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ZHUANG Qi-qi, CAO Jing-pei, WU Yan, WEI Yu-lei, YANG Zhi-hui, ZHAO Xiao-yan. 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

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

doi: 10.19906/j.cnki.JFCT.2021084

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

Funds: The project was supported by the National Natural Science Foundation of China (21978317), the National Natural Science Foundation of Jiangsu Province (BK20200028) and the Priority Academic Program Development of Jiangsu Higher Education Institutions

Received Date: 2021-08-10
Rev Recd Date: 2021-09-19

Available Online: 2022-01-07

Publish Date: 2022-04-26

Abstract

Abstract

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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References(36)

References

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