文献类型：期刊文献

中文题名：木质素基炭纳米片的制备及其电化学性能

英文题名：Preparation of Lignin-based Carbon Nanosheet and Its Electrochemical Property

作者：李继辉[1] 孙康[1] 宋曜光[1] 王傲[1] 蒋剑春[1]

第一作者：李继辉

机构：[1]中国林业科学研究院林产化学工业研究所生物质化学利用国家工程实验室国家林业局林产化学工程重点开放性实验室江苏省生物质能源与材料重点实验室

年份：2019

卷号：39

期号：1

起止页码：67-74

中文期刊名：林产化学与工业

外文期刊名：Chemistry and Industry of Forest Products

收录：CSTPCD;;Scopus;北大核心:【北大核心2017】；CSCD:【CSCD2019_2020】；

基金：国家自然科学基金资助项目(31770629);江苏省自然科学基金青年项目(BK20180154)

语种：中文

中文关键词：炭纳米片;木质素;模板法;超级电容器

外文关键词：carbon nanosheet;lignin;template method;supercapacitor

分类号：TQ35

摘要：为了获得性能优良、成本低廉的二维炭材料,选择木质素磺酸钠为碳源、硼酸作为模板剂,经溶液混合、高温炭化和沸水回流等过程制得木质素基炭纳米片,当m(硼酸)∶m(木质素磺酸钠)为1∶1、5∶1和10∶1时,分别标记为SLB-1、SLB-5和SLB-10。通过扫描电镜(SEM)和透射电镜(TEM)等手段分析了炭纳米片的微观形貌,采用X射线衍射(XRD)、X射线光电子能谱(XPS)和激光拉曼光谱等手段检测了炭纳米片的晶体结构、元素组成和表面性质,通过循环伏安(CV)、恒电流充放电(GCD)和交流阻抗(EIS)等方法检测了炭纳米片的电化学性能,结果表明:SLB-5具有完好的二维片层结构,通过调整硼酸与木质素磺酸钠的质量比,可以有效调控炭纳米片的厚度。SLB-5具有一定的石墨化程度,模板剂被完全去除,含氧元素高达16.63%,同时,SLB-5炭纳米片厚度达到纳米级,电流密度为1 A/g时比电容为350.79 F/g,电流密度增加到10 A/g时比电容仍可以保持79.95%,循环5 000次后比电容可以保持90%以上。
To obtain two-dimensional carbon materials with low cost and high performance,lignin-bosed carbon nanosheet was prepared using sodium lignosulfonate as carbon sources and boron acid as template followed by solution mixing,high temperature carbonization and refluxing with boiling water.The carbon nanosheets obtained with m(boron acid)∶m(sodium lignosulfonate)=1∶1,5∶1 and 10∶1 were marked as SLB-1,SLB-5 and SLB-10.The morphology of sample was characterized by SEM and TEM.XRD,XPS and Raman were used to demonstrate its constituent,structure and property.The electrochemical performance of carbon nanosheet was tested by cyclic voltammetry(CV),galvanostatic charge/discharge(GCD)and electrochemical impedance spectroscopy(EIS)measurements.The results revealed that the sample SLB-5 exhibited well-developed teo-dimensional lamellar structure.The thickness of the carbon nanosheed could be regulated by the mass ratio of boron acid and sodium lignosulfonate.SLB-5 presented somewhat graphitic structure,the template was completely removed and the content of oxygen was 16.63%.The capacitance of SLB-5 could reach 350.79 F/g at 1 A/g,which could also maintain almost 79.95%as the current density increased to 10 A/g.After 5 000 cycles,endurance test at 5 A/g,its capacitance could still retain 90%.