Fe_(3)O_(4)/Fe_(2)O_(3)纳米材料的形态学控制合成及其电化学性能

Microstructure controlled synthesis of iron oxide nanoarrays and its electrochemical performance

提出了一种简单的可控制氧化铁纳米阵列(NAs)微观结构的合成方法.通过XRD、SEM和XPS等多种方法对所制备的氧化铁阵列的化学组成和微观结构进行了表征.探讨了不同溶剂对氧化铁纳米阵列的形貌、粒径尺寸、基本成分以及电化学性能的影响.发现在甲醇溶剂体系中制备的尖刺状Fe_(3)O_(4)/Fe_(2)O_(3)纳米阵列具有良好的电化学性能,在5 mA·cm^(-2)的电流密度下面积比电容高达307.5 mF·cm^(-2),当电流密度增加至20倍时,可保持51.3%.

A simple microstructure-controlled synthesis for iron oxide NAs has been developed.The influence of solvent on the sample morphology,particle size,elementary composition and electrochemical performance of iron oxide NAs were investigated.The chemical composition and microstructure of as-prepared iron oxide NAs were characterized by a variety of means,such as XRD,SEM,TEM and XPS.The sample synthesized in methyl alcohol solvent delivers an excellent electrochemical performance.An high areal capacitance of 307.5 mF·cm^(-2)has been obtained at 5 mA·cm^(-2).when the current density increases to 20 times,51.3%capacity can be retained.