Transition metal dichalcogenide electrodes with interface engineering for high-performance hybrid supercapacitors

Transition metal dichalcogenides (TMDCs) have been explored in recent years to utilize in electronics due to their remarkable properties. This study reports the enhanced energy storage performance of tungsten disulfide (WS 2 ) by introducing the conductive interfacial layer of Ag between the substra...

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Bibliographic Details
Published in:RSC advances 2023-06, Vol.13 (26), p.1838-1844
Main Authors: Iqbal, Muhammad Zahir, Shaheen, Misbah, Ifseisi, Ahmad A, Aftab, Sikandar, Ahmad, Zubair, Siyal, Sajid Hussain, Iqbal, Muhammad Javaid
Format: Article
Language:English
Subjects:
Activated carbon
Chalcogenides
Chemistry
Energy storage
Magnetron sputtering
Specific energy
Substrates
Supercapacitors
Transition metal compounds
Tungsten disulfide
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Summary:Transition metal dichalcogenides (TMDCs) have been explored in recent years to utilize in electronics due to their remarkable properties. This study reports the enhanced energy storage performance of tungsten disulfide (WS 2 ) by introducing the conductive interfacial layer of Ag between the substrate and active material (WS 2 ). The interfacial layers and WS 2 were deposited through a binder free method of magnetron sputtering and three different prepared samples (WS 2 and Ag-WS 2 ) were scrutinize via electrochemical measurements. A hybrid supercapacitor was fabricated using Ag-WS 2 and activated carbon (AC) since Ag-WS 2 was observed to be the most proficient of all three samples. The Ag-WS 2 //AC devices have attained a specific capacity ( Q s ) of 224 C g −1 , while delivering the maximum specific energy ( E s ) and specific power ( P s ) of 50 W h kg −1 and 4003 W kg −1 , respectively. The device was found to be stable enough as it retains 89% capacity and 97% coulombic efficiency after 1000 cycles. Additionally, the capacitive and diffusive currents were obtained through Dunn's model to observe the underlying charging phenomenon at each scan rate. Transition metal dichalcogenides (TMDCs) have been explored in recent years to utilize in electronics due to their remarkable properties.
ISSN:2046-2069
2046-2069
DOI:10.1039/d3ra03207h