文献类型：期刊文献

中文题名：Fe3O4@C纳米片超级电容器电极材料的制备及其电化学性能研究

英文题名：Preparation and Electrochemical Performances of Fe_3O_4@C Nanosheet Electrode Material for Supercapacitors

作者：王傲[1] 孙康[1] 蒋剑春[1]

第一作者：王傲

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,江苏南京210042

年份：2018

卷号：38

期号：5

起止页码：9-16

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:【CSCD2017_2018】；

基金：江苏省生物质能源与材料重点实验室基本科研业务费项目(JSBEM-S-201804)。

语种：中文

中文关键词：超级电容器;Fe3O4;炭纳米片;电极材料;循环稳定性

外文关键词：supercapacitor;Fe3O4;carbon nanosheets;electrode materials;cycling stability

分类号：TQ35

摘要：以蔗糖为碳源、Fe(NO_3)_3·9H_2O为活性前体、氯化钠为模板剂,通过简单有效的原位沉积结晶和热解等步骤制备了二维Fe_3O_4@C纳米片,采用多种技术手段对Fe_3O_4@C纳米片的结构进行了表征,并测试了其电化学性能。结构表征结果表明:Fe_3O_4@C纳米片由厚度为纳米级的石墨化C片和嵌插在C层表面尺寸分布均匀的Fe_3O_4纳米颗粒组成; Fe_3O_4@C纳米片厚度小于100 nm,比表面积达255 m^2/g,平均孔径为3.79 nm,Fe_3O_4质量分数为36.98%。电化学性能测试结果表明:Fe_3O_4@C纳米片具有较高的比电容量和优异的倍率性能,1 A/g电流密度下比电容量为436 F/g,20 A/g电流密度下比电容量仍高达332 F/g;但循环稳定性较差,10 A/g下充放电500次后的比电容量为178 F/g,仅有初始比电容量的50.71%。
Two dimensional Fe3O4@C nanosheet was prepared by facile and effective in situ deposition crystallization followed by pyrolysis route using sucrose as carbon source and sodium chloride as template.The structure and electrochemical energy storage properties of Fe3O4@C nanosheet were characterized.The results showed that Fe3O4@C nanosheet is made of 2D graphitic carbon nanosheets,which uniform Fe3O4 nanoparticles were embedded.The thickness of Fe3O4@C nanosheet was less than 100 nm with the specific surface area 255 m 2/g and average pore size 3.79 nm,and the mass fraction of Fe3O4 was 36.98%.Besides,the results of the electrochemical energy storage performance showed that Fe3O4@C nanosheet exhibited high specific capacitance and excellent rate capability(436 F/g at 1 A/g,and still up to 332 F/g at 20 A/g).However,the cycle stability of it was poor,over 500 cycles at 10 A/g,the specific capacitance dropped to 178 F/g,only 50.71%of the initial value.