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Authors
Koseki, Kentaro
Tamura, Takahiro
Keywords
Photoelectrochemical capacitor
Composite electrode
Rutile-type titanium oxide
Manganese oxide
Abstract
Composite electrodes comprising TiO2 and MnO2 particles were prepared as hotoelectrochemical capacitor electrodes that enable both photoelectric conversion and energy storage. A MnO2 electrode was also prepared for characterization of MnO2 alone, and its electrochemical capacitor property was evaluated. The MnO2 electrode showed higher specific capacitance than a RuO2 electrode. Results of the photoelectrochemical measurements demonstrated that the discharge capacity of the TiO2/MnO2 composite electrode was slightly inferior to that of the TiO2 and RuO2 electrodes using. By reducing MnO2 particle size, the composite electrode exhibited increased surface roughness and enhanced capacity. We consider that the smaller MnO2 particles can efficiently store Na+ ions even at a low photo-charge voltage of TiO2.
Publisher
Elsevier
Content Type
Journal Article
Link
ISSN
0167-577X
NCID
AA11537623
Journal Title
Materials letters
Current Journal Title
Materials letters
Volume
186
Start Page
338
End Page
340
Published Date
2017-01-01
Publisher-DOI
Text Version
Author
Rights
Copyright © 2017 Elsevier B.V. All rights reserved. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/
Citation
This research was published by Elsevier Inc.: Y. Usui et al. Light energy storage in TiO2/MnO2 composite electrode for photoelectrochemical capacitor. Materials letters. 2017, 186, 338-340
Department
Faculty of Engineering/Graduate School of Engineering
Language
English