硅酸盐学报2013，Vol.41Issue(5)：656-662,7.DOI:10.7521/j.issn.0454-5648.2013.05.12
锌掺杂对针状氧化铁的结构及电化学性能的影响
Effect of Doping Zinc Ion on Structure and Electrochemical Properties of Needle-like Iron Oxide Nanoparticles
摘要
Abstract
Zn0.34Fe2.66O4 nanociystallines were synthesized through a microemulsion-alcohol supercritical fluid drying technique. The structure, chemical composition, size and morphology of products were characterized by infrared spectroscopy, energy dispersive X-ray fluoresence spectrometry, X-ray diffraction and transmission electron microscopy. The results show that the as-prepared powder has a regularly needle-like morphology, and the aspect ratio of rod-like Zn0.34Fe2.66O4 microcrystallines is smaller than that of Fe3O4. The electrochemical properties of Zn0.34Fe2.66O4 electrode were investigated by using cyclic voltammetry, galvanostatic charge/discharge and electrochemical impedance spectrometry. It was indicated that Zn0.34Fe2.66O4 nanocrystallines exhibited better electrochemical performance and cycling stability in H2SO4 electrolyte of 1 mol/L in the potential range of 0-1.6 V (vs saturated calomel electrode). The specific capacitance of the material as a single electrode was 1 116F/g at the current density of 1 A/g. The sample had a better load discharge performance.关键词
锌掺杂氧化铁/纳米晶/针状/微乳-超临界干燥/电化学性能Key words
zinc doped iron oxide/ microcrystals/ needle-like/ microemulsion-supercritical fluid drying/ capacitance performance分类
化学化工引用本文复制引用
吕慧,蒋荣立,周璐,李艳芬..锌掺杂对针状氧化铁的结构及电化学性能的影响[J].硅酸盐学报,2013,41(5):656-662,7.基金项目
高等学校博士学科点专项科研基金(20100095110009) （20100095110009）
中央高校基本科研业务费专项基金(2010LKHX05). （2010LKHX05）
