第 50 卷第 2 期 Vol. 50 No. 2 2020 年 4 月 Apr 2020

所属栏目：功能材料 稀土掺杂CoCexFe2-xO4的制备及电化学性能研究

段红珍，张丽娜，李光磊，罗铭宇 （中北大学 理学院，山西 太原 030051）

摘　要：制备稀土铈掺杂钴基铁氧体并对其形貌和结构进行表征，通过对其微观结构的分析研究其电化学性能。通过一步溶剂热法制备CoCexFe2-xO4（x=0、0.04、0.08、0.12、0.16、0.20）纳米粒子，经SEM、XRD、傅里叶变换红外、循环伏安法（CV）、恒流充放电（GCPL）和交流阻抗，表征了其微观形貌结构及电化学性能。电化学测试性能表明：当电流密度j=1 A·g-1时，稀土Ce含量x=0.08，比电容量达到525 F·g-1。结果表明：比电容量跟随稀土离子含量的变化而变化。稀土离子的引入有利于材料导电网络的形成，提高其电导率。

关键词：CoCexFe2-xO4；电化学性能；比电容；金属氧化物；溶剂热法

中图分类号：TB34　　文献标识码：A　　文章编号：1009-9212（2020）02-0045-05

Preparation and Electrochemical Performance of Rare Earth Doped CoCexFe2-xO4

DUAN Hong-zhen, ZHANG Li-na, LI Guang-lei, LUO Ming-yu (School of Science, North University of China, Taiyuan 030051, China)

Abstract：This subject aims to prepare rare earth cerium-doped cobalt-based ferrite and characterize its morphology and structure, and study its electrochemical performance by analyzing its microstructure. Preparation of CoCexFe2-xO4(x=0，0.04, 0.08, 0.12, 0.16, 0.20) nanoparticles were achieved by one-step solvothermal method. SEM, XRD, FTIR, cyclic voltammetry (CV), constant current charge and discharge (GCPL), Nyquist were used to characterize its micro-morphology structure and electrochemical performance. The electrochemical test performance showed that when the current density is 1 A·g-1 and the rare earth Ce at a content of 0.08, the specific capacitance reached 525 F·g-1. The results showed that the specific capacitance changed with the change of rare earth ion content. The introduction of rare earth ions is conducive to the formation of a conductive network of the material and improves its electrical conductivity.

Key words：CoCexFe2-xO4; electrochemical performance; specific capacitance; metal oxide; solvothermal method

基金项目：山西省留学基金项目（2014-重点6），国家自然基金资助项目（51272239）。

作者简介：段红珍（1971-），女，山西太原人，副教授，研究生导师，研究方向：纳米功能材料（E-mail：duanhz2000@163.com）

收稿日期： 2020-04-1