Abstract
In this paper, (NH4)2V4O9 nanosheets coexisting with carbon nanotubes were prepared by hydrothermal method as cathode materials for aqueous zinc ions, which can improve the electrochemical performance of the battery. The structure, morphology and electrochemical properties of (NH4)2V4O9/CNTs were studied and analyzed by physical characterization and electrochemical tests. Carbon nanotubes coexisting with (NH4)2V4O9 provide an electron transfer channel, significantly improving the rate performance of the material. The discharge specific capacity of (NH4)2V4O9/CNTs is 445 mAh g−1 at a current of 0.1 A g−1; while the discharge specific capacity still remains 207.16 mAh g−1 when the current up to 5.0 A g−1. After 2000 cycles at a high current density of 10 A g−1, the discharge specific capacity of the battery remained 93.1 mAh g−1 from 115.2 mAh g−1 in the first cycle, showing good cycle performance. Therefore, (NH4)2V4O9/CNTs has fast charge-discharge performance and cycle stability.
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.
