摘要
首先利用简单水热法制备CoFe_(2)O_(4)纳米棒阵列材料,再利用二次水热法合成CoFe_(2)O_(4)@V_(3)O_(7)复合电极材料。借助SEM、XRD、XPS及电化学工作站等设备对所制样品的形貌、结构及电化学性能进行了表征。结果表明,当NH 4VO 3浓度为0.01 mol/L、二次水热反应时长为24 h时,所制CoFe_(2)O_(4)@V_(3)O_(7)复合材料电化学性能最佳且具有较高的循环稳定性,在1 mV/s的扫描速率下,其最大比电容达到4.28 F/cm^(2)(1475.86 F/g)。
First,CoFe_(2)O_(4)nanorod arrays were prepared via simple hydrothermal method,and then CoFe_(2)O_(4)@V_(3)O_(7)composite electrodes were synthesised by secondary hydrothermal method.The morphology,structure and electrochemical performance of as-prepared samples were characterized by SEM,XRD,XPS and electrochemical workstation.The results show that when the concentration of NH 4VO 3 is 0.01 mol/L and the secondary hydrothermal time is 24 h,the prepared CoFe_(2)O_(4)@V_(3)O_(7)composite electrode has the optimum electrochemical performance,excellent cycle stability,and exhibits a maximum specific capacity of 4.28 F/cm^(2)(1475.86 F/g)at scan rate of 1 mV/s.
作者
李谓群
李睿智
朱圣远
巴鑫
周盈科
Li Weiqun;Li Ruizhi;Zhu Shengyuan;Ba Xin;Zhou Yingke(State Key Laboratory of Refractories and Metallurgy,Wuhan University of Science and Technology,Wuhan 430081,China;College of Materials Science and Metallurgical Engineering,Wuhan University of Science and Technology,Wuhan 430081,China;Hubei Institute of Quality Supervision and Inspection,Ezhou 436070,China)
出处
《武汉科技大学学报》
CAS
北大核心
2022年第2期99-106,共8页
Journal of Wuhan University of Science and Technology
基金
国家自然科学基金资助项目(51802233)
湖北省自然科学基金资助项目(2018CFB154)
国家市场监督管理总局科技计划项目(2020MK064).
