CeO2/Fe2O3复合材料的合成及其电化学性能研究
Synthesis and Electrochmical Performance of CeO2/Fe2O3 Composite
DOI: 10.12677/MS.2018.89106, PDF,    科研立项经费支持
作者: 张 航, 徐 婧, 丁 燕, 赖金盛, 夏丽娟, 李梦梦, 王 雷, 钟声亮：江西师范大学化学化工学院，江西 南昌
关键词: CeO2/Fe2O3复合材料；稀土；超级电容器；CeO2/Fe2O3 Composite； Rare Earth； Supercapacitor
摘要: 以Ce(NO3)3∙6H2O和K4[Fe(CN)6•3H2O为原料、去离子水为溶剂，通过沉淀法成功地制备出了松塔双锥形前驱体，在500℃空气氛围中煅烧4 h后得到CeO2/Fe2O3复合材料，同时考察了物料比、反应温度和反应时间对产物形貌的影响。运用X-射线衍射仪(XRD)、热分析(TG)、扫描电子显微镜(SEM)和透射电子显微镜(TEM)等技术对产物的形貌和结构进行表征，通过循环伏安和恒电流充放电测试研究了CeO2/Fe2O3复合材料作为超级电容器电极材料的性能。在2 mol/L KOH溶液中，电位窗口0.18~0.45 V (vs. SCE)时，CeO2/Fe2O3作为电极材料表现出良好的比电容，在扫速为1 mV/s时，其比电容可达到332.9 F/g。
Abstract: In this work, tower shape-bipyramid CeO2/Fe2O3 composite materials were successfully prepared through a chemical co-precipitation method using Ce(NO3)3∙6H2O and K4[Fe(CN)6•3H2O as raw materials and deionized water as solvent. The effects of reaction temperature and reaction time on the morphology of the product were investigated. CeO2/Fe2O3 composite materials used as electrode materials for supercapacitor, were also detected through electrochemical performance tests. Electrochemical performance of CeO2/Fe2O3 composite materials in 2 mol/L KOH electrolyte was studied by cyclic voltammetry, galvanostatic charge-discharge and electrochemical impedance spectroscopy (EIS). As electrode material, the operating voltage of CeO2/Fe2O3 composite materials is 0.18 - 0.45 V (vs. SCE). Its specific capacitance is 332.9 F/g at sweep speed of 1 mV/s.
文章引用：张航, 徐婧, 丁燕, 赖金盛, 夏丽娟, 李梦梦, 王雷, 钟声亮. CeO2/Fe2O3复合材料的合成及其电化学性能研究[J]. 材料科学, 2018, 8(9): 905-916. https://doi.org/10.12677/MS.2018.89106

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