聚苯胺包覆CoFe类普鲁士蓝复合材料的超电容性能 |
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引用本文: | 张政,刘洪达,宋朝霞,刘伟. 聚苯胺包覆CoFe类普鲁士蓝复合材料的超电容性能[J]. 复合材料学报, 2020, 37(3): 731-739. DOI: 10.13801/j.cnki.fhclxb.20190624.001 |
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作者姓名: | 张政 刘洪达 宋朝霞 刘伟 |
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作者单位: | 1.大连理工大学 化工学院, 大连 116024; |
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基金项目: | 国家自然科学基金(51877029) |
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摘 要: | 制备了聚苯胺包覆CoFe类普鲁士蓝纳米立方(CoFePBA@PANI)复合材料,采用XRD、FTIR、SEM和TEM对CoFePBA@PANI复合材料的结构和形貌进行表征,利用循环伏安法(CV)、恒电流充放电法及交流阻抗法(EIS)对CoFePBA@PANI复合材料的电化学性能进行了考察。结果表明:通过植酸的配位作用促使苯胺在具有面心立方结构的CoFePBA表面发生聚合反应,形成了具有核-壳结构的CoFePBA@PANI复合材料。系统地研究了PANI的含量对CoFePBA@PANI复合材料电化学性能的影响,CoFePBA@PANI复合材料在0.5 mol/L Na2SO4和H2SO4的混合酸性介质中,在1 A/g电流密度下,比电容值达到401.2 F/g,电流密度增大至10 A/g时,比电容仍能保持在367.3 F/g。
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关 键 词: | 超级电容器 电极材料 普鲁士蓝 高分子聚合物 核-壳结构 复合材料 |
收稿时间: | 2019-03-14 |
Supercapacitive performance of polyaniline coated CoFe Prussian blue analogue composite |
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Affiliation: | 1.School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China;2.College of Life Science, Dalian Minzu University, Dalian 116600, China |
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Abstract: | The polyaniline coated CoFe Prussian blue analogue(CoFePBA@PANI) composites were synthesized to seek high electrochemical performance. The structure and morphology of CoFePBA@PANI composite were characterized by XRD, FTIR, SEM and TEM. The electrochemical properties of CoFePBA@PANI composite were investigated by cyclic voltammetry (CV), galvanostatic charge-discharge test and electrochemical impedance spectroscopy (EIS). By using phytic acid (PA) as a chelating agent, the PANI is coated on the surface of CoFePBA to form the CoFePBA@PANI composite with core-shell structures. In the mixed acidic electrolyte of 0.5 mol/L Na2SO4 and H2SO4, the CoFePBA@PANI composite exhibits specific capacitances as high as 401.2 F/g and 367.3 F/g at the current density of 1 A/g and 10 A/g, respectively. |
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