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Two-Step Preparation of Hierarchical Porous Carbon Materials Derived from Tannin for Use as an Electrode Material for Supercapacitors

Jianping Deng1, Qianqian Zhang1, Yuling Lan1, Lingcong Luo1, Zimin Dai1, Zhonghang Lin1, Zhixin Lu1, Jiancheng Yuan1, Yiqi Fu1, Lu Luo2,*, Weigang Zhao1,*

1 College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
2 Maritime College, Zhejiang Ocean University, Zhoushan, 316022, China

* Corresponding Authors: Lu Luo. Email: email; Weigang Zhao. Email: email

(This article belongs to the Special Issue: Advanced Renewable Energy Storage Materials and Their Composite: Preparation, Characterization and Applications)

Journal of Renewable Materials 2023, 11(6), 2631-2646. https://doi.org/10.32604/jrm.2023.027163

Abstract

The development and utilization of biomass and agroforestry processing byproducts for high-value applications have been an important topic in the field of renewable materials research. Based on this, a two-step microwave hydrothermal pre-carbonization and KOH activation method was proposed to synthesize tannin-based activated carbons with a high specific surface area, hierarchical pore structure, and good electrochemical performance. The microstructure, texture properties, and physicochemical characteristics were investigated. The results show that the prepared tannin-based activated carbons presented a hierarchical pore structure (micro- and mesopores) with a specific surface area as high as 997.46 m3 g−1 . The electrochemical analysis shows that the tannin-based activated carbons have good wettability and charge transfer rates. Under the three-electrode system with 6 M KOH as the electrolyte, the active material TAC600-4 had a maximum specific capacitance of 171 F g−1 at 0.5 A g−1 . As the current density increases to 10 A g−1 , the specific capacitance can still be maintained at 149 F g−1 , indicating a good rate capability. Therefore, the specific surface area and pore size of tannin-based activated carbons can be effectively adjusted by the alkali/carbon ratio, making it a promising supercapacitor electrode material and providing a new method for the high-value development of tannins in the field of electrochemical energy storage.

Graphical Abstract

Two-Step Preparation of Hierarchical Porous Carbon Materials Derived from Tannin for Use as an Electrode Material for Supercapacitors

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APA Style
Deng, J., Zhang, Q., Lan, Y., Luo, L., Dai, Z. et al. (2023). Two-step preparation of hierarchical porous carbon materials derived from tannin for use as an electrode material for supercapacitors. Journal of Renewable Materials, 11(6), 2631-2646. https://doi.org/10.32604/jrm.2023.027163
Vancouver Style
Deng J, Zhang Q, Lan Y, Luo L, Dai Z, Lin Z, et al. Two-step preparation of hierarchical porous carbon materials derived from tannin for use as an electrode material for supercapacitors. J Renew Mater. 2023;11(6):2631-2646 https://doi.org/10.32604/jrm.2023.027163
IEEE Style
J. Deng et al., "Two-Step Preparation of Hierarchical Porous Carbon Materials Derived from Tannin for Use as an Electrode Material for Supercapacitors," J. Renew. Mater., vol. 11, no. 6, pp. 2631-2646. 2023. https://doi.org/10.32604/jrm.2023.027163



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