摘要
以酚醛树脂为碳前驱体,磷酸为磷源,三嵌段共聚物F127为软模板,通过溶剂挥发诱导自组装(EISA)法制备了具有介孔结构的磷掺杂介孔碳(PMCs)。通过场发射扫描电子显微镜(FE-SEM)、透射电子显微镜(TEM)、X射线衍射(XRD)和X射线光电子能谱(XPS)等测试方法研究所制备的PMCs的形貌与结构并利用电化学工作站测试其电化学性能。实验结果表明,磷元素在介孔碳中主要以C—P键和P—O键两种形式存在。电化学测试表明,通过调整磷掺杂量可获得最大比电容。当电流密度为0.5 A/g时,介孔碳比电容为140 F/g,而优化后的磷掺杂介孔碳比电容可达176 F/g。
Phosphorus-doped mesoporous carbons(PMCs)were synthesized by solvent evaporation-induced self-assembly(EISA)method using phenolic resin as carbon precursor,phosphoric acid as phosphorus source,and the triblock copolymer F127 as soft template.The morphology and structure of the prepared PMCs were characterized by field emission scanning electron microscopy(FE-SEM),transmission electron microscopy(TEM),X-ray diffraction(XRD)and X-ray photoelectron spectroscopy(XPS).The electrochemical properties of samples were tested by electrochemical workstation.The results show that phosphorus mainly exists in the form of C—P bond and P—O bond in mesoporous carbon.Electrochemical tests show that the maximum specific capacitance can be obtained by adjusting the amount of phosphorus doping.When the current density is 0.5 A/g,the specific capacity of mesoporous carbon is 140 F/g,while the optimized mesoporous carbon reaches 176 F/g.
作者
刘欢
解玉龙
赵素琴
LIU Huan;XIE Yulong;ZHAO Suqin(Qinghai Provincial Key Laboratory of Applied Physical Chemistry,Key Laboratory of Qinghai-Tibet Plateau Resource Chemistry and Ecological Environment Protection,National Ethnic Affairs Commission,College of Chemistry and Chemical Engineering,Qinghai Minzu University,Xining 810007,China;College of Physical and Electronic Information Engineering,Qinghai Minzu University,Xining 810007,China)
出处
《人工晶体学报》
CAS
北大核心
2022年第8期1413-1421,共9页
Journal of Synthetic Crystals
基金
青海省应用基础研究项目(2020-ZJ-705)。
关键词
磷掺杂介孔碳
溶剂挥发诱导自组装法
酚醛树脂
介孔结构
电化学性能
比电容
phosphorus-doped mesoporous carbon
solvent evaporation-induced self-assembly method
phenolic resin
mesoporous structure
electrochemical property
specific capacitance
