文献类型：期刊文献

英文题名：Wood-based carbon tubes with low-tortuosity and open tubular structure for energy storage application

作者：Niu, Qingyuan[1] Tang, Qiheng[2] Sun, Xiankai[3] Wang, Lizhen[1] Gao, Kezheng[1]

第一作者：Niu, Qingyuan

通信作者：Gao, KZ[1];Tang, QH[2]

机构：[1]Zhengzhou Univ Light Ind, Sch Mat & Chem Engn, Zhengzhou 450002, Peoples R China;[2]Chinese Acad Forestry, Res Inst Wood Ind, 1 Dongxiaofu, Beijing 100091, Peoples R China;[3]China Natl Bldg Mat Grp, 1 Guan Zhuang Dong Li, Beijing 100024, Peoples R China

年份：2022

卷号：57

期号：8

起止页码：5154-5166

外文期刊名：JOURNAL OF MATERIALS SCIENCE

收录：;EI(收录号：20220711626919);Scopus(收录号：2-s2.0-85124353925);WOS:【SCI-EXPANDED(收录号:WOS:000753923600002)】；

基金：We appreciate the Young Scientists Fund of the National Natural Science Foundation of China (31800484).

语种：英文

外文关键词：Capacitance - Carbon - Carbon dioxide - Carbonization - Delignification - Energy storage - Foams - HVDC power transmission - Tubes (components) - Wood

摘要：The diffusion and storage of ions and transport of electrons are main factors affecting the performance of supercapacitors. The unique elongated carbon tubes with low-tortuosity and open tubular structure can improve ion diffusion and charge conduction simultaneously. In this paper, the elongated carbon tubes with low-tortuosity and open tubular structure were prepared from the delignified slender wood tubes by using simple chemical delignification and carbonization methods. The wood-based carbon tube has a gravimetric specific capacitance of 139 F g(-1) at a current density of 0.25 A g(-1). The wood-based carbon tube foam film exhibits a typical stacked structure with abundant stacked voids and 3D network structure, which imparts its excellent flexibility and conductivity. The stacked 3D network structure endows the good permeability of the PVA gel electrolyte. The areal specific capacitance of the WCT-800 wood-based carbon tube interdigital flexible solid supercapacitor is 74 mF cm(-2) at a current density of 100 mu A cm(-2), which still remains at 58 mF cm(-2) at 1000 mu A cm(-2). The interdigital flexible solid supercapacitor also exhibits good flexibility and folding endurance: about 116% of capacitance retention after 10000 folding cycles.