Abstract
Sodium-ion batteries (SIBs) arouse researchers’ interest gradually because of the scarcity of lithium sources. VSe2 is one of the transition metal dichalcogenides (TMDs) equipped with a huge interlayer distance to accommodate more Na+ ions, but the problems such as agglomeration, volume deformation, dissolution loss and so on hinder its further development. Therefore, a VSe2/B4C@HCG composite was fabricated by the simple high-energy ball milling method. The B4C and VSe2 nanoparticles are mixed and restrict each other, then anchor on the graphene, which alleviates agglomeration and volume deformation of VSe2 during cycling processes effectively, and improves the overall environmental stability and conductivity. As a result, the VSe2/B4C@HCG composite delivers a reversible capacity of 407.5 mAh g−1 with the coulombic efficiency of 98.5% after 450 cycles, superior rate performance of 524.2, 476.3, 413.7, 353.7, and 295.3 mAh g−1 at the different current density of 100, 200, 500, 1000, and 2000 mA g−1, and ultrastable long-term cycling property of 251.6 mAh g−1 at the current density of 1 A g−1 after 1000 cycles, indicating the VSe2/B4C@HCG composite shows utilization potentiality to be used as an excellent anode material for SIBs.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
