Hydrothermal Synthesis of alpha-MnO2 Nanorods and Their Electrochemical Performances | Health & Environmental Research Online (HERO)

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Citation
Tags

HERO ID

3699670

Reference Type

Journal Article

Title

Hydrothermal Synthesis of alpha-MnO2 Nanorods and Their Electrochemical Performances

Author(s)

Xue Zhao-Hui; Liu Zhao-Lin; Ma Fang-Wei; Sun Li-Ping; Huo Li-Hua; Zhao Hui

Year

2012

Is Peer Reviewed?

Yes

Journal

Chinese Journal of Inorganic Chemistry / Wu Ji Hua Xue Xue Bao
ISSN: 1001-4861

Volume

Issue

Page Numbers

691-697

Web of Science Id

WOS:000303552800008

Abstract

alpha-MnO2 nanorods were prepared by hydrothermal treatment of KMnO4, GO (graphite oxide)and sulfuric acid at 120 degrees C for 3 h. The nanorods have a diameter of 10 similar to 20 nm and a length of 300 similar to 400 nm. The introduce of GO reduces the preparation temperature of nanorods and shorten the reaction time. The electrochemical results indicate that alpha-MnO2 nanorods show fine capacitive behavior in neutral aqueous electrolyte (1 mol.L-1 Na2SO4), When the scan rates were 2 mV.s(-1) and 5 mV.s(-1), the specific capacitances were 276 F.g(-1) and 240 F.g(-1), respectively. This alpha-MnO2 nanorods is a potential electrode material for electrochemical capacitors.

Keywords

manganese dioxide; nanorods; hydrothermal method; electrochemical capacitors