镧钕双稀土金属有机框架化合物的制备及其电化学性能测试
Preparation and Electrochemical Properties of Lanthanum Neodymium Bimetallic Organic Frame Compounds
周进康 1陈娟 1田飞 1任俊鹏 1鄢波1
作者信息
- 1. 贵州师范学院化学与材料学院,贵州贵阳 550018
- 折叠
摘要
基于稀土的特性,将稀土金属与有机酸配体对苯二甲酸结合,可能获得具有优良电化学性能的有机配位化合物.以镧(La)、钕(Nd)为金属源,对苯二甲酸为有机配体,采用溶剂热法制备了双金属有机框架化合物(La/Nd-MOFs).经SEM、EDS、FT-IR、XRD、XPS进行结构表征,将其与乙炔黑、PVDF制成黏稠浆状涂料负载于泡沫镍上获得复合电极La/Nd-MOFs.采用CV、GCD和EIS方法测定了 La/Nd-MOFs电化学性能.结果表明,在电流密度1 A/g下,La/Nd-MOFs复合电极的比电容达到408 F/g,在8 A/g下循环充放电5000次,比电容保持率为94.4％.
Abstract
Based on the characteristics of rare earth,combining lanthanum and neodymium with terephthalic acid ligands,it is possible to obtain organic coordination compounds with special topological structures and electro-chemical properties.Bimetallic organic framework compounds(La/ND-MOFs)were prepared by solvothermal method using lanthanum(La)and neodymium(Nd)as metal sources and terephthalic acid as organic ligands.The structure was characterized by SEM,EDS,FT-IR,XRD and XPS.The composite electrode La/Nd-MOFs was prepared with acetylene black and PVDF and loaded on nickel foam.The electrochemical properties of La/Nd-MOFs were determined by CV,GCD and EIS methods.The results show that at 1A/g,the specific capacitance of La/Nd-MOFs composite modified electrode reaches 408 F/g,and after 5000 cycles of charge and discharge at 8 A/g,the capacitance retention rate remains at 94.4％.
关键词
稀土/有机框架化合物/电极材料/电化学性能Key words
Rare Earth/Organic Framework Compound/Electrode Material/Electrochemical Performance引用本文复制引用
出版年
2024
NETL
NSTL
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