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林产化学与工业 ›› 2018, Vol. 38 ›› Issue (5): 9-16.doi: 10.3969/j.issn.0253-2417.2018.05.002

• 研究报告 • 上一篇    下一篇

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

王傲, 孙康, 蒋剑春   

  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
  • 收稿日期:2018-06-22 出版日期:2018-10-25 发布日期:2018-11-06
  • 通讯作者: 蒋剑春,研究员,博士,博士生导师,从事林产化学加工和生物质能源开发技术研究;E-mail:bio-energy@163.com。 E-mail:bio-energy@163.com
  • 作者简介:王傲(1987-),男,河北保定人,助理研究员,博士,研究方向为活性炭材料的制备及在电化学储能中的应用
  • 基金资助:
    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)

Preparation and Electrochemical Performances of Fe3O4@C Nanosheet Electrode Material for Supercapacitors

WANG Ao, SUN Kang, JIANG Jianchun   

  1. Institute of Chemical Industry of Forest Products, CAF;National Engineering Lab. for Biomass Chemical Utilization;Key and Open Lab. of Forest Chemical Engineering, SFA;Key Lab. of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China
  • Received:2018-06-22 Online:2018-10-25 Published:2018-11-06

摘要: 以蔗糖为碳源、Fe(NO33·9H2O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Fe3O4@C纳米片,采用多种技术手段对Fe3O4@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:Fe3O4@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Fe3O4纳米颗粒组成;Fe3O4@C纳米片厚度小于100 nm,比表面积达255 m2/g,平均孔径为3.79 nm,Fe3O4质量分数为36.98%。电化学性能测试结果表明:Fe3O4@C纳米片具有较高的比电容量和优异的倍率性能,1A/g电流密度下比电容量为436F/g,20A/g电流密度下比电容量仍高达332F/g;但循环稳定性较差,10A/g下充放电500次后的比电容量为178F/g,仅有初始比电容量的50.71%。

关键词: 超级电容器, Fe3O4, 炭纳米片, 电极材料, 循环稳定性

Abstract: 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 m2/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.

Key words: supercapacitor, Fe3O4, carbon nanosheets, electrode materials, cycling stability

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