Electrochemical properties of coal pitch-based three-dimensional porous carbon as electrode materials for supercapacitors

GUO Ming-cong; LIU Shu-lin; HE  Feng-xiang; SONG Tian-yong; LI Qiang-sheng; CAI Xin-hui; HU Bo

doi:10.19906/j.cnki.JFCT.2021080

Volume 49 Issue 11

Nov. 2021

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Article Navigation > Journal of Fuel Chemistry and Technology > 2021 > 49(11): 1648-1655

GUO Ming-cong, LIU Shu-lin, HE Feng-xiang, SONG Tian-yong, LI Qiang-sheng, CAI Xin-hui, HU Bo. Electrochemical properties of coal pitch-based three-dimensional porous carbon as electrode materials for supercapacitors[J]. Journal of Fuel Chemistry and Technology, 2021, 49(11): 1648-1655. doi: 10.19906/j.cnki.JFCT.2021080

Citation:

GUO Ming-cong, LIU Shu-lin, HE Feng-xiang, SONG Tian-yong, LI Qiang-sheng, CAI Xin-hui, HU Bo. Electrochemical properties of coal pitch-based three-dimensional porous carbon as electrode materials for supercapacitors[J]. Journal of Fuel Chemistry and Technology, 2021, 49(11): 1648-1655. doi: 10.19906/j.cnki.JFCT.2021080

Citation:

GUO Ming-cong, LIU Shu-lin, HE Feng-xiang, SONG Tian-yong, LI Qiang-sheng, CAI Xin-hui, HU Bo. Electrochemical properties of coal pitch-based three-dimensional porous carbon as electrode materials for supercapacitors[J]. Journal of Fuel Chemistry and Technology, 2021, 49(11): 1648-1655. doi: 10.19906/j.cnki.JFCT.2021080

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Electrochemical properties of coal pitch-based three-dimensional porous carbon as electrode materials for supercapacitors

doi: 10.19906/j.cnki.JFCT.2021080

1.
Sinosteel Anshan Research Institute of Thermo-Energy Co., Ltd., Anshan 114044, China
2.
Sinosteel Thermal Energy Jincan New Energy Technology (Huzhou) Co. Ltd., Huzhou 313000, China

Funds: The project was supported by the Natural Science Foundation of Liaoning Province (2019-ZD-0895), Key Research and Development Program of Liaoning Province (2018304002), the Central Government Guided Local Special Funds for Scientific and Technological Development (2021JH6/10500019), the Project of Shandong Provincial Key Research and Development Program (Major Science and Technology Innovation Project) in 2020 (2020CXGC010309)

Received Date: 2021-05-27
Rev Recd Date: 2021-08-31

Available Online: 2021-09-10

Publish Date: 2021-11-30

Abstract

Abstract

Using cheap coal pitch as raw material and adding pore-forming agent, the carbon material with three-dimensional skeleton structure was obtained by mixing process, air oxidation stabilization process and carbonization process successively, and then the porous carbon material with high specific surface area was obtained by water vapor activation. Thermogravimetric and elemental analysis were used to study the thermal reaction characteristics and structural changes of the samples after oxidation stabilization and carbonization. The surface morphology, pore structure and electrochemical properties of the activated samples were characterized by scanning electron microscope, BET method and electrochemical workstation. After water vapor activation, BET of porous carbon can reach 1638 m²/g. The water-based double layer capacitors prepared with this porous carbon as the electrode material of supercapacitors have good cyclic performance, and the specific capacitance can reach 252 F/g at 1 A/g current density. After 10000 cycles, the specific capacity can still maintain 97.3%. Therefore, the porous carbon materials prepared by this method have low cost and good chemical stability, and can be used as an ideal electrode material for supercapacitors.
- coal pitch,
- porous carbon,
- supercapacitor

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References(19)

References

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