|
Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Engineering / Faculty of Engineering >
Peer-reviewed Journal Articles, etc >
All-solid-state electrochemical capacitors using MnO2/carbon nanotube composite electrode
| 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) |
| URI: | http://hdl.handle.net/2115/57394 |
| 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
|
