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Title of Journal: J Solid State Electrochem

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Abbravation: Journal of Solid State Electrochemistry

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Springer-Verlag

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DOI

10.1007/s12253-016-0164-4

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1433-0768

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Mesoporous amorphous MnOSubscript2/Subscript a

Authors: MaoWen Xu DanDan Zhao ShuJuan Bao HuLin Li
Publish Date: 2007/01/10
Volume: 11, Issue: 8, Pages: 1101-1107
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Abstract

A kind of novel mesoporous electrochemical active material amorphous MnO2 has been synthesized by an improved reduction reaction and using supramolecular as template The synthesized sample was characterized physically by thermogravimetric analysis Xray diffraction transmission electron microscope TEM and Brunauer–Emmett–Teller BET surface area measurement respectively Electrochemical characterization was performed using cyclic voltammetry and chronopotentiometry in 2 mol/l KOH aqueous solution electrolyte The results of BET and TEM analysis indicated that supramolecular template plays an important role in the process of big specific surface area mesoporous material forming After sintering at 200 °C the sample still remained an amorphous structure and its specific capacitance reached 2987 F/g and presented a very stable capacitance after 500 cycles In addition the electrochemical process such as ion transfer and electrical condition was also investigated with electrochemical impedance spectroscopy

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