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All-solid-state electrochemical capacitors using MnO2/carbon nanotube composite electrode

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Title: All-solid-state electrochemical capacitors using MnO2/carbon nanotube composite electrode
Authors: Shimamoto, Kazushi Browse this author
Tadanaga, Kiyoharu Browse this author →KAKEN DB
Tatsumisago, Masahiro Browse this author
Keywords: Manganese oxides
Carbon nanotube
All-solid-state capacitor
Solid electrolyte
Phosphosilicate gel
Issue Date: 30-Oct-2013
Publisher: Pergamon-elsevier science ltd
Journal Title: Electrochimica acta
Volume: 109
Start Page: 651
End Page: 655
Publisher DOI: 10.1016/j.electacta.2013.07.154
Abstract: MnO2/carbon nanotube (CNT) composite was prepared by a solution process. In the obtained MnO2-CNT composite, MnO2 particles were well-dispersed on CNTs. The specific capacitance of the MnO2-CNT composite in an aqueous electrolyte was higher than that of MnO2 and CNT. All-solid-state electrochemical capacitors (ECs) were fabricated using the MnO2-CNT composite as a positive electrode, activated carbon powder as a negative electrode, and phosphosilicate gel as an electrolyte. The obtained all-solid-state ECs operated at the temperature range between -30 degrees C and 100 degrees C. The specific discharge capacitance and the rate ability of the capacitors were improved by elevating temperature. In addition, the fabricated all-solid-state ECs exhibited excellent cycle performance at the temperature range between -30 degrees C and 100 degrees C for 20,000 cycles. These results indicate that all-solid-state ECs using MnO2 are promising energy storage devices with excellent stability and high reliability at the wide range of temperatures. (C) 2013 Elsevier Ltd. All rights reserved.
Type: article (author version)
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 忠永 清治

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