YU Xianchun1,ZHANG Chuanyan1,SUN Delin1,LIU Detao2,WU Qingding1,SUN Debin1,LI Luanyu1
(1.College of Material Science and Engineering，Central South University of Forestry and Technology,Changsha 410004; 2.School of Light Industry and Engineering,South China University of Technology,Guangzhou 510641)
Abstract:In order to expand application of wood ceramics in energy storage fields,waste pine wood powders and phenolic resin were used as raw materials to prepare porous activated wood ceramics matrix materials by sing high-temperature carbonization and hydrothermal activation,and the influence of process factors on the structure and performance of wood ceramics matrix materials was discussed.The scanning electron microscope (SEM),X-ray diffraction (XRD),Raman spectroscopy (RS),high resolution transmission electron microscope (HRTEM),and X-ray photoelectron spectroscopy (XPS)were employed to characterize the wood ceramics matrix materials.The results show that a specimen with better performance can be obtained under the condition of the material mass ratio of 3∶7,carbonized at 900 ℃ for 2 h,and the hydrothermally activated at 180 ℃ for 6 h.The specimen presents a three-dimensional network structure,which partly keeps the natural pores of wood.N2 adsorption-desorption analysis presents that the specific surface area of the specimen can reach 1 671.99 m2·g-1 after activation.The specimen is mainly composed of amorphous carbon and glassy carbon,and contains disordered graphite microcrystalline structure.The surface of the specimen contains oxygen-containing functional groups which are easy to infiltrate by the electrolyte.Using the specimen as the electrode materials and KON with concentration of 6 mol·L-1 as the electrolyte,its specific capacitance can reach 120.31 F·g-1,as the scan rate is 0.1 A·g-1,and the specific capacitance retention rate is 79.3% after 2 000 cycles of charge and discharge.The above results indicate that the prepared wood ceramics matrix materials have good electrochemical performance and have the potential to become carriers of active energy storage materials.
Keywords:porous wood ceramics;matrix structure;hydrothermal activation;performence characterization
中图分类号： TQ050.4+21 文献标志码：A
文章编号：1008-5548(2022)02-0079-08
DOI:10.13732/j.issn.1008-5548.2022.02.010
收稿日期： 2021-07-31，修回日期：2021-08-26，在线出版时间：2022-02-17。
基金项目：国家自然科学基金项目，编号：32071851;31670572。
第一作者简介：余先纯(1969—)，女，教授，硕士生导师，研究方向为生物质炭基材料。E-mail:sdlyxc@163.com。
