Bibliographic Details
| Title: |
Investigation on Pesudocapacitance Mechanism of Magnéli Oxide Ti4O7 in Aqueous Electrolyte |
| Authors: |
Yu-Ting WENG, Tsung-Yi CHEN, Jeng-Lung CHEN, Nae-Lih WU |
| Source: |
Electrochemistry, Vol 92, Iss 7, Pp 074005-074005 (2024) |
| Publisher Information: |
The Electrochemical Society of Japan, 2024. |
| Publication Year: |
2024 |
| Collection: |
LCC:Technology
LCC:Physical and theoretical chemistry |
| Subject Terms: |
supercapacitor, ti4o7, pseudocapacitance mechanism, in situ x-ray absorption near-edge spectroscopy, Technology, Physical and theoretical chemistry, QD450-801 |
| More Details: |
Possessing high electronic conductivity and the nature of chemical inertness, the Magnéli phase titanium oxide Ti4O7 is a promising material for various electrochemical applications. Herein, the Ti4O7 electrode in aqueous Li2SO4 electrolyte is characterized for its supercapacitor applications. The oxide electrode exhibits pseudocapacitive behavior over a wide potential range of ±1.0 V (vs. Ag/AgCl), showing a specific capacitance of 105 F g−1, equivalent to 85 µF cm−2–oxide, along with outstanding high-rate performance and cycle stability (96 % capacitance retention after 5000 cycles). In situ X-ray absorption near-edge spectroscopy analysis on the Ti K-edge absorption reveals that the pseudocapacitance does not involve the redox reaction of the oxide electrode material. A pseudocapacitance mechanism attributed to the reversible redox reactions of the hydrogen and oxygen atoms adsorbed on the oxide surface is proposed. |
| Document Type: |
article |
| File Description: |
electronic resource |
| Language: |
English |
| ISSN: |
2186-2451 |
| Relation: |
https://www.jstage.jst.go.jp/article/electrochemistry/92/7/92_24-70030/_html/-char/en; https://doaj.org/toc/2186-2451 |
| DOI: |
10.5796/electrochemistry.24-70030 |
| Access URL: |
https://doaj.org/article/33f03f099be6425997798cab035912c6 |
| Accession Number: |
edsdoj.33f03f099be6425997798cab035912c6 |
| Database: |
Directory of Open Access Journals |
