Effects of reducing agents on the electrochemical properties of the prepared manganese oxide powders
Journal
Current Applied Physics
Journal Volume
12
Journal Issue
4
Pages
1058-1063
Date Issued
2012
Author(s)
Abstract
Manganese oxide powders with high specific capacitance were successfully fabricated via a simple redox reaction at room temperature. The reducing agents used for the redox reaction significantly affected the oxidation states and the electrochemical properties of the prepared manganese oxide powders. As C 2H 5OH was used as the reducing agent, high Mn 3 content and high amount of hydroxide were observed in the prepared manganese oxide powders. In addition, the molar ratios of KMnO 4 and C 2H 5OH also influenced the electrochemical properties of the prepared manganese oxide powders. When the molar ratio of KMnO 4 and C 2H 5OH was 1:40, the specific capacitance of the prepared manganese oxide was as high as 402 F/g. These results of the electrochemical analysis showed that, adjusting the molar ratios of KMnO 4 and C 2H 5OH demonstrated to be an effective method for controlling the electrochemical characteristics of manganese oxide powders. ? 2011 Elsevier B.V. All rights reserved.
Subjects
Capacitance
Manganese oxide
Redox reaction
Type
journal article