双金属MOF基复合结构材料及其超级电容器性能

doi:10.12028/j.issn.2095-4239.2018.0024

储能科学与技术 ›› 2018, Vol. 7 ›› Issue (3): 495-501.doi: 10.12028/j.issn.2095-4239.2018.0024

双金属MOF基复合结构材料及其超级电容器性能

付韫珒, 熊传溪

武汉理工大学材料科学与工程学院, 湖北武汉 430070

收稿日期:2018-03-01 修回日期:2018-03-15 出版日期:2018-05-01 发布日期:2018-03-19
通讯作者: 熊传溪,教授,研究方向为储能材料,E-mail:cxiong@whut.edu.cn
作者简介:付韫珒(1993-),女,硕士研究生,研究方向为先进高分子材料,E-mail:fyj1993@whut.edu.cn
基金资助:
国家自然科学基金项目（51673154，51503159）。

Double metal MOF-based composite structure and performance as supercapacitor electrode

FU Yunjin, XIONG Chuangxi

School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, Hubei, China

Received:2018-03-01 Revised:2018-03-15 Online:2018-05-01 Published:2018-03-19

摘要/Abstract

摘要： 超级电容器作为一种新型储能原件，具有功率密度高和可快速充放电等优点。本文通过溶剂热法制备了铁锰双金属有机框架材料（FeMn-MOF），并将其作为前驱体，经过高温热处理后，得到碳和金属氧化物的复合结构材料（C-MOF）。采用傅里叶变换红外光谱仪、X射线衍射仪和场发射扫描电子显微镜对制备得到的材料进行了结构表征，将高温处理后的材料作为电极材料应用于超级电容器，并对其进行了一系列的化学测试。当电流密度为0.5 A/g时，C-MOF基超级电容器的比容量最高可达388.9 F/g，C-MOF基超级电容器的比容量最高可达388.9 F/g。在2 A/g的电流密度下循环5000次后，比容量为初始值的201.5%，说明在循环的过程中C-MOF电极不仅具有良好的循环稳定性，还存在一个活化过程使其比容量增加。这将极大地提高MOF基复合结构材料作为超级电容器电极材料的应用价值，同时也为双金属MOF材料的研究与应用提供了新的思路。

关键词: 金属有机框架材料, 复合结构, 超级电容器

Abstract: Supercapacitor has been recently evaluated as a new type of energy storage device because of its high energy density and the rapid charge/discharge.The niccolite-type MOF compound was synthesized by a facile solvothermal method. By thermal treatment at 800℃, the precursor FeMn-MOF was calcinated to the complex structure C-MOF. FTIR Spectroscopy, XRD and SEM were used to characterize the structure of samples. The electrochemical properties of the supercapacitor applying C-MOF as the electrode material were measured. Results show that the specific capacitance of C-MOF electrode reaches 388.9 F·g^-1 at the current density of 0.5 A·g^-1. Furthermore, the capacitance retention is up to 201.5% after 5000 cycles at current density of 2 A·g^-1 compared with the initial specific capacitance. It indicates not only a good electrochemical stability but also an activation process of C-MOF electrode. This research not only broadens the application field of MOF material but also promotes the application value of MOF based composites as the electrode material of supercapacitor.

Key words: metal-organic framework, composite structure, supercapacitor

中图分类号:

TQ028.8

付韫珒, 熊传溪. 双金属MOF基复合结构材料及其超级电容器性能[J]. 储能科学与技术, 2018, 7(3): 495-501.

FU Yunjin, XIONG Chuangxi. Double metal MOF-based composite structure and performance as supercapacitor electrode[J]. Energy Storage Science and Technology, 2018, 7(3): 495-501.

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双金属MOF基复合结构材料及其超级电容器性能

Double metal MOF-based composite structure and performance as supercapacitor electrode

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