Overall
- Language
- English
- Conflict of Interest
- In relation to this article, we declare that there is no conflict of interest.
- Publication history
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Received September 24, 2024
Accepted October 10, 2024
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Enhanced Energy Storage Capacity of TiO 2 Atomic Layered Molybdenum Oxide–Sulfi de Negatrode for an Aqueous Ammonium Ion Supercapacitor
Abstract
Ammonium ions (NH 4
+ ) being the non-metallic charge carriers are deemed safe while enhancing the charge storage performance.
To enable long term effi ciency in energy storage systems, one needs to overcome the primary obstacle to ammonium
storage, which is to develop materials with layered structures having enough interlayer separations as electrodes for hosting
NH 4
+ ions reversibly. To address the issues, herein, synthesis of a molybdenum oxide–sulfi de composite with titanium
oxide atomic layering was prepared to serve as active negative electrode (negatrode). The growth of MoS 2 nanosheet on
hydrothermally grown MoO 3 nanosheets was confi rmed from the low- and high-resolution imaging. The presence of uniform
layer of TiO 2 over MoS 2 /MoO 3 electrode was verifi ed through imaging and compositional analysis. Thanks to its distinct
nano-architecture and surface atomic layering, the constructed TiO 2 /MoS 2 /MoO 3 electrode was able to deliver specifi c
capacitance of 624 F/g at a current density of 3 A/g. After 3000 charge–discharge cycles, the electrode’s retention was close
to 86% at 5 A/g current density. The present results provide insights into the development of non-metal ion-electrolyte-based
energy storage systems.