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HomeKey Engineering MaterialsKey Engineering Materials Vol. 727Preparation and Electrochemical Properties of...

Preparation and Electrochemical Properties of LaMnO₃ Powder as a Supercapacitor Electrode Material

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Abstract:

The structural and electrochemical properties of lanthanum manganate (LaMnO₃) powder prepared by the sol-gel method are researched in this article. The powder calcined at 600 °C showed amorphous, and the powder calcined at 700-800 °C showed the pure phase of the LaMnO₃. The grains with the size of about 80-120 nm were agglomerating together. Cyclic voltammetry and galvanostatic charge-discharge were used to characterize the electrochemical properties in alkaline environment. The electrochemical properties calcined at 700 °C showed a specific capacitance of 73 F/g at the current density of 0.5 A/g. The raw materials for preparing the LaMnO₃ powder are cheap, and the operation method is simple.

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Periodical:

Key Engineering Materials (Volume 727)

Pages:

698-704

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.727.698

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Online since:

January 2017

Authors:

Xian Wei Wang*, Xiao Er Wang, Hui Chao Zhang, Qian Qian Zhu, Dong Li Zheng, Ling Yun Sun

Keywords:

Electrochemical Property, LaMnO₃, Powder, Sol-Gel, Supercapacitor

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© 2017 Trans Tech Publications Ltd. All Rights Reserved

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