A densification-activation strategy toward hierarchical porous self-supporting thick carbon electrodes for high-power supercapacitors

Zixuan Guo; Zhiwei Tian; Yanbo Liu; Yong Huang; Weijun Li; Xiaoshuai Han; Shuijian He; Haimei Mao; Chunmei Zhang; Gaigai Duan; Shaohua Jiang

doi:10.1039/D5CC01049G

A densification-activation strategy toward hierarchical porous self-supporting thick carbon electrodes for high-power supercapacitors†

Zixuan Guo,^a Zhiwei Tian,

^a Yanbo Liu,*^b Yong Huang,

^a Weijun Li,*^c Xiaoshuai Han,^a Shuijian He,

^ad Haimei Mao,^e Chunmei Zhang,*^d Gaigai Duan

^a and Shaohua Jiang

*^a

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* Corresponding authors

^a Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
E-mail: shaohua.jiang@njfu.edu.cn

^b School of Textile Science and Engineering, Wuhan Textile University, Wuhan, China
E-mail: yanboliu@gmail.com

^c Institute of Micro/Nano Materials and Devices, Ningbo University of Technology, Ningbo, Zhejiang, China
E-mail: liweijun@nbu.edu.cn

^d Institute of Materials Science and Devices, School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou, China
E-mail: cmzhang@usts.edu.cn

^e Key Laboratory of Quality Safe Evaluation and Research of Degradable Material, State Administration for Market Regulation, Hainan Academy of Inspection and Testing, Haikou, Hainan 570203, China

Abstract

In this study, a high-load self-supporting thick carbon electrode (35.2 mg cm⁻²) was constructed by hot-pressing densification combined with KOH activation of natural wood. Its hierarchical pore structure synergistically optimizes energy storage performance (3.5 F cm⁻²) and provides a new strategy for the practical application of supercapacitors.

This article is part of the themed collection: Chemistry at the Forefront of the Sustainable Energy Transition

Chemical Communications

A densification-activation strategy toward hierarchical porous self-supporting thick carbon electrodes for high-power supercapacitors†

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