Porous Fe-Mn-O nanocomposites:Synthesis and supercapacitor electrode application

Transition metal oxide micro-/nanostructures demonstrate high potential applications in energy storage devices. Here, we report a facile synthesis of highly homogeneous oxide composites with porous structure via a coordination polymer precursor, which was prepared with the assistance of tartaric aci...

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Bibliographic Details
Published in:Progress in natural science 2016-06, Vol.26 (3), p.264-270
Main Authors: Zhu, Guoxing, Yang, Jing, Liu, Yuanjun, Xie, Xulan, Ji, Zhenyuan, Yin, Jinxiu, Shen, Xiaoping
Format: Article
Language:English
Subjects:
Capacitors
Electrodes
Fe-Mn-O
Oxide
Oxide
Fe-Mn-O
Porous
Porous structure
structure
Capacitors
Electrodes
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Summary:Transition metal oxide micro-/nanostructures demonstrate high potential applications in energy storage devices. Here, we report a facile synthesis of highly homogeneous oxide composites with porous structure via a coordination polymer precursor, which was prepared with the assistance of tartaric acid.The typical product, Fe-Mn-O composite was demonstrated here. The obtained Fe-Mn-O product was systemically characterized by X-ray powder diffraction, scanning electron microscopy, transmission electron microscopy, elemental mapping analysis, and X-ray photoelectron spectroscopy. It was demonstrated that the Fe-Mn-O nanocomposite shows interconnected porous structure, in which iron,manganese, and oxygen are uniformly distributed. In addition, the Fe-Mn-O nanocomposite was then fabricated as capacitor electrodes. Operating in an aqueous neutral solution, the Fe-Mn-O composite electrodes showed an wide working potential window from 0.2 to 1.0 V（vs. SCE）, and a specific capacitance of 86.7 Fg-1or 0.4 Fcm-2at a constant current density of 1 Ag-1with good cycle life. This study offers a new precursor approach to prepare porous metal oxide composites, which would be applied in energy-storage/conversion devices, catalysts, sensors, and so on.
ISSN:1002-0071
DOI:10.1016/j.pnsc.2016.05.016