Unveiling the redox electrochemistry of 1D, urchin-like vanadium sulfide electrodes for high-performance hybrid supercapacitors
Author | Karuppasamy, K. |
Author | Vikraman, Dhanasekaran |
Author | Hussain, Sajjad |
Author | Thirumalraj, Balamurugan |
Author | Santhoshkumar, P. |
Author | Parangusan, Hemalatha |
Author | Park, Hyun-Chang |
Author | Jung, Jongwan |
Author | Kim, Hyun-Seok |
Available date | 2024-07-16T06:15:13Z |
Publication Date | 2023 |
Publication Name | Journal of Energy Chemistry |
Resource | Scopus |
Identifier | http://dx.doi.org/10.1016/j.jechem.2023.01.005 |
ISSN | 20954956 |
Abstract | Exploring novel versatile electrode materials with outstanding electrochemical performance is the key to the development of advanced energy conversion and storage devices. In this work, we aim to construct new-fangled one-dimensional (1D) quasi-layered patronite vanadium tetrasulfide (VS4) nanostructures by using different sulfur sources, namely thiourea, thioacetamide, and L-cysteine through an ethyleneaminetetraacetic-acid (EDTA)-mediated solvothermal process. The as-prepared VS4 exhibits several unique morphologies such as urchin, fluffy nanoflower, and polyhedron with appropriate surface areas. Among the prepared nanostructures, the VS4-1@NF nanostructure exhibited excellent electrochemical properties in 6 M KOH solution, and we explored its redox electrochemistry in detail. The as-prepared VS4-1@NF electrode exhibited battery-type redox characteristics with the highest capacity of 280 C g-1 in a three-electrode assembly. Moreover, it offered a capacity of 123 F g-1 in a hybrid two-electrode set-up at 1 A g-1 with the highest specific energy and specific power of 38.5 W h kg-1 and 750 W kg-1, respectively. Furthermore, to ensure the practical applicability and real-world performance of the prepared hybrid AC@NF//VS4-1@NF cell, we performed a cycling stability test with more than 5,000 galvanostatic charge-discharge cycles at 2 A g-1, and the cell retained around 84.7% of its capacitance even after 5,000 cycles with a CE of 96.1%. |
Sponsor | This work was supported by the Research Program of Dongguk University in 2022 (No. S-2022-G0001-00016). |
Language | en |
Publisher | Elsevier |
Subject | 1D material Mesoporous Patronite Redox electrochemistry Urchin VS4 |
Type | Article |
Pagination | 569-580 |
Volume Number | 79 |
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