摘要
利用脉冲电磁场辅助氧化还原法,以KMn O4和Mn SO4为原料,FeCl3为铁源,制备Fe掺杂二氧化锰粉体。通过场发射扫描电子显微镜(FESEM)和X射线衍射仪(XRD)分别对样品的形貌和结构进行表征,并使用电化学工作站测试样品的电化学性能。测试结果表明,FeCl3的存在使二氧化锰晶型由γ型转变为α型以及形成二氧化锰纳米短棒。当FeCl3掺杂量为0.03 mol时,在1 A/g电流密度下电极材料的比电容为758.6 F/g,与纯二氧化锰相比,比电容提高了60.7%,说明铁离子的加入可以优化二氧化锰的电化学性能。
Fe-doped manganese dioxide powder was prepared by pulsed electromagnetic field-assisted redox method through simply refluxing the reaction mixture of KMnO4 and MnSO4 solution in the presence of FeCl3.The structure and morphology of samples are characterized through field emission scanning electron microscope (FESEM) and X-ray diffraction (XRD) respectively,and the electrochemical performance of the samples was tested by using an electrochemical workstation.The test results show that the presence of FeCl3 results in a structural change from γ- type to α- type phase and the formation of MnO2 short nanorods.When the doping amount of FeCl3 is 0.03 mol,the specific capacitance of the electrode material is 758.6 F/g at a current density of 1 A/g,and the specific capacitance increases by 60.7% compared with pore manganese dioxide.The addition of iron ions optimizes the electrochemical performance of manganese dioxide.
作者
姜甲儒
潘双
李宏云
黄伟
王冰
刘亮
JIANG Jia-ru;PAN Shuang;LI Hong-yun;HUANG Wei;WANG Bing;LIU Liang(College of Materials Science and Engineering,Liaoning University of Technology,Jinzhou 121001,China)
出处
《辽宁工业大学学报（自然科学版）》
2019年第1期59-62,共4页
Journal of Liaoning University of Technology(Natural Science Edition)
基金
国家自然科学基金项目(51601086)
关键词
脉冲电磁场辅助氧化还原法
FE掺杂
晶型转变
电化学性能
pulsed electromagnetic field assisted oxidation reduction
Fe doping
crystal transformation
electrochemical performance
