Simple synthesis of MoSSe heterojunction nanosphere for ultrafast kinetics and high-performance sodium-ion battery

• Published in: Journal of alloys and compounds Vol. 1007; p. 176397
• Main Authors: Yang, Haobin, Tian, Chengxiang, Wang, Jiashuo, Cui, Songya, Lin, Zhui, Jiang, Ming, Yan, Wensheng, Wang, Donghua
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 05.12.2024
• Subjects: Heterostructure; MoSSe; Nanosphere; Sodium-ion-batteries; Heterostructure; Nanosphere; MoSSe; Sodium-ion-batteries
• ISSN: 0925-8388
• DOI: 10.1016/j.jallcom.2024.176397

Sodium-ion batteries (SIBs) are expected to be an effective solution for energy storage to be applied to various electronic devices due to their cost-effective performance and similar working principles to lithium-ion batteries (LIBs). However, the electrochemical performances of SIBs are currently hindered by the challenges posed by the large size and slow diffusion kinetics of Na+. Chalcogenide heterojunctions have great potential in SIBs anode materials. Therefore, this study presents a MoSSe heterojunction with a three-dimensional flower-like spherical structure. This heterojunction exhibits enhanced Na+ adsorption and storage capabilities, a high rate of Na+ diffusion, and improved structural stability. These excellent structures and characteristics are highly beneficial for Na+ storage, demonstrating superior stability, and large capacity. Consequently, the designed MoSSe exhibits long cycling stability at 5.0 A g−1 (195.2 mAh g−1 after 2000 cycles) and exceptional capacity at 0.1 A g−1 (413.1 mAh g−1). This work demonstrates that heterojunctions can become excellent electrode materials for SIBs to achieve stable sodium energy storage. [Display omitted] •The 3D flower spheres MoSSe heterojunction improves the electronic conductivity.•The MoSSe possesses a good cyclability over 2000 cycles with a capacity of 195.2 mAh/g at 5.0 A/g.•The MoSSe shows high-rate performance of 181.2 mAh/g at 5.0 A/g.