无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2022, Vol. 54 ›› Issue (3): 59-65.doi: 10.19964/j.issn.1006-4990.2021-0352

• 研究与开发 • 上一篇    下一篇

基于氧化铁/生物质碳复合材料的高性能超级电容器研究

王典1,2,3,4(),苏琼1,2,4,庞少峰1,2,3,4,曹世军1,2,3,4,康莉会1,2,3,4,梁丽春1,2,3,4,王彦斌1,2,3,4(),李朝霞1,2,3()   

  1. 1.西北民族大学化工学院,甘肃兰州 730030
    2.环境友好复合材料国家民委重点实验室
    3.甘肃省高校环境友好复合材料及生物质利用重点实验室
    4.甘肃省生物质功能复合材料工程研究中心
  • 收稿日期:2021-05-31 出版日期:2022-03-10 发布日期:2022-03-18
  • 作者简介:王典(1997— ),男,硕士研究生,研究方向为生物质综合利用及功能材料的制备研究;E-mail: 1458123231@qq.com
  • 基金资助:
    国家自然科学基金(21968032);国家自然科学基金(22165025);甘肃省科技计划项目(20YF8FA045);西北民族大学化学学科创新团队建设项目(1110130139,1110130141);甘肃省一流专业建设(2019SJYLZY-08);中央高校基本科研业务费创新团队培育项目(31920190012);中央高校基本科研业务费创新团队培育项目(31920200085);甘肃省高校创新创业教育改革项目(四新建设背景下专创融合教育教学质量提升工程、精细化工创新创业教育教学团队、化学工程实验教学示范中心)

Study on high-performance supercapacitors based on Fe2O3/biomass carbon composites

WANG Dian1,2,3,4(),SU Qiong1,2,4,PANG Shaofeng1,2,3,4,CAO Shijun1,2,3,4,KANG Lihui1,2,3,4,LIANG Lichun1,2,3,4,WANG Yanbin1,2,3,4(),LI Zhaoxia1,2,3()   

  1. 1. School of Chemical Engineering,Northwest Minzu University,Lanzhou 730030,China
    2. Key Laboratory of EnvironmentFriendly Composite Materials of the State Ethnic Affairs Comm-ission
    3. Key Laboratory of Utility of Environmental Friendly Composite Materials and Biomass in Universities of Gansu Province
    4. Engineering Research Center of Biomass-Functional Composite Materials of Gansu Province
  • Received:2021-05-31 Published:2022-03-10 Online:2022-03-18

摘要:

为改善碳材料比电容低的问题以及氧化铁(Fe2O3)导电性和循环稳定性差的问题,采用氧化铁修饰生物质衍生碳(ATC)表面制备氧化铁/生物质碳(Fe2O3/ATC)复合材料,通过氧化铁和生物质衍生碳的协同效应使复合材料获得更高的比电容和更好的稳定性。利用扫描电镜(SEM)、X射线光电子能谱(XPS)、拉曼(Raman)光谱等技术手段对样品进行了表征。结果表明,制备的复合材料存在一定的孔隙结构,氧化铁纳米粒子被锚定在碳表面。当氧化铁和生物质衍生碳的质量比为1:1时,制备的复合材料具有最优的电化学性能,在3.0 mol/L氢氧化钾溶液中显示出430.8 F/g(电流密度约为1.0 A/g)的高比电容,电流密度增大20倍时电容保持率大于60%。将其作为负极构建的不对称超级电容器具有较高的电压窗口(0~1.6 V),并且实现了39.1 W·h/kg的高能量密度;同时表现出优异的循环稳定性,在电流密度为10 A/g下循环5 000次后拥有111%的电容保持率。

关键词: 生物质, 氧化铁, 复合材料, 比电容, 超级电容器

Abstract:

To improve the low specific capacitance of carbon materials as well as the poor electrical conductivity and low cyclic stability of ferric oxide(Fe2O3),Fe2O3 was used to modify the surface of biomass-derived carbon to prepare Fe2O3/bio-mass carbon composites,which achieved higher specific capacitance and better stability by the synergistic effect of Fe2O3 and biomass-derived carbon.The samples were characterized by scanning electron microscopy(SEM)、X-ray photoelectron spec-troscopy(XPS) and Raman spectra.The results demonstrated that the prepared composites had a certain pore struc-ture,with Fe2O3 nanoparticles anchored on the carbon surface.When the mass ratio of Fe2O3 and biomass-derived carbon was 1:1,the prepared composites possessed the best electrochemical performance,showing a high specific capacitance of 430.8 F/g(1.0 A/g) in 3.0 mol/L KOH.The capacitance retention was still greater than 60% when the current density was increased by 20 times.The asymmetric supercapacitor constructed by using it as the negative electrode had a high voltage window(0~1.6 V) and achieved a high energy density of 39.1 W·h/kg.While,it also exhibited excellent cycling stability with 111% capacitance retention after 5 000 cycles at 10 A/g.

Key words: biomass, Fe2O3, composite materials, specific capacitance, supercapacitor

中图分类号: