Sn-interspersed MoS2/C nanosheets with high capacity for Na+/K+ storage

• Published in: The Journal of physics and chemistry of solids 2019-03, Vol.126, p.72-77
• Main Authors: Yin, Dangui, Chen, Zhi, Zhang, Ming
• Format: Article
• Language: English
• Subjects: MoS2/C nanosheet; Potassium ion battery; Sodium ion battery
• ISSN: 0022-3697; 1879-2553
• DOI: 10.1016/j.jpcs.2018.10.029

Sn-interspersed MoS2/C (SnMoS2/C) nanosheets were prepared via a two-step hydrothermal method. The modification of the MoS2/C nanosheets using Sn was designed to improve their electrochemical performance. When used as anodes for sodium ion batteries (SIBs), the electrodes exhibited an initial capacity of 536 mA h g−1 and maintained a capacity of 431 mA h g−1 after 90 cycles at 0.1 A g−1. In potassium ion batteries (KIBs), the electrodes also delivered a discharge capacity of 290 mA h g−1 at 0.1 A g−1 and a high rate capacity of 123 mA h g−1 at 0.8 A g−1. Thus, SnMoS2/C nanosheets have potential applications in novel rechargeable batteries. •Sn interspersed in MoS2/C nanosheets to obtain SnMoS2/C.•SnMoS2/C nanosheets used as anodes in sodium/potassium ion batteries.•SnMoS2/C electrodes had high capacities.