脲醛树脂前驱体碳微球形貌调控及电化学性能研究  

Morphology Control and Electrochemical Properties of Carbon Microspheres from Urea-formaldehyde Resin Precursors

作　　者：任广元[1] 胡绍纲 吴云轩 艾军鹏 REN Guangyuan;HU Shaogang;WU Yunxuan;AI Junpeng(School of Chemistry and Materials,East China University of Technology,Nanchang 330013,China)

机构地区：[1]东华理工大学化学与材料学院,江西南昌330013

出　　处：《东华理工大学学报（自然科学版）》2024年第1期76-82,共7页Journal of East China University of Technology(Natural Science)

基　　金：国家自然科学基金地区科学基金项目(52162024)。

摘　　要：为了探究原料配比对脲醛树脂形貌及碳微球电化学性能的影响,通过改变尿素、甲醛与甲酸的物质的量比,制备了三种不同微纳结构的脲醛树脂微球,再在氮气保护下800℃裂解,获得了相应的碳微球。采用上述脲醛树脂前驱体制备的花状碳纳米微球(NUFC-3)作为电极材料,在三电极体系中开展电化学性能研究。结果表明,在1 A/g的电流密度下,比电容(C_(s))为189 F/g;在20 A/g的电流密度下,C_(s)为145 F/g,其保留率为76.7%。该脲醛树脂为前驱体的碳微球具有制备方法简单、成本低廉及电化学性能优异等优点,有望在电化学储能领域获得应用。In order to investigate the effects of raw materials ratio on the morphology of urea formaldehyde resin and the electrochemical performance of carbon microspheres,three kinds of urea-formaldehyde resin microspheres with different micro/nano structures were prepared by changing the amount of substance ratio of urea,formaldehyde and formic acid,after that,the corresponding carbon microspheres were obtained by pyrolysis at 800℃under nitrogen protection.The flower-like carbon nanospheres(NUFC-3)prepared by the above urea-formaldehyde resin precursor were used as electrode materials,and the NUFC-3 showed good electrochemical performance in the three-electrode system.The results show that the specific capacitance(C_(s))is 189 F/g at a current density of 1 A/g;the C_(s) is 145 F/g at a current density of 20 A/g,and the retention rate of C_(s) is 76.7%.The carbon microspheres prepared by the precursor of urea formaldehyde resin have many advantages like simple preparation method,low cost and good electrochemical performance,which are expected to be applied in the field of electrochemical energy storage.

关 键 词：脲醛树脂 碳微球 形貌调控 电化学性能 超级电容器 

分 类 号：O646.5[理学—物理化学]