Abstract
The small-size SnO2 particles uniformly dispersed on the nitrogen doping graphene nanocomposites (SnO2-N-GNS) have been successfully synthesized by a mild hydrothermal method with the precursors of graphene oxide, urea and SnCl4.5H2O. The phase (XRD, EDX and XPS) and morphology (SEM, TEM) analysis further confirm the obtained products. When the composite served as anode material in sodium ion batteries (SIBs), it delivers superior sodium storage performance with reversible discharge capacity of 294.4mAhg−1 at a current density of 50mAg−1 in the voltage range from 0.01–3V after 50 discharge/charge cycles, which is much higher than that of SnO2-GNS (182.9mAhg−1) and N-GNS (114.9mAhg−1). Besides, the SnO2-N-GNS electrode also exhibits admirable rate stability with the discharge capacity of 206mAhg−1 even at 800mAg−1. More importantly, the SnO2-N-GNS shows lower internal resistance and larger sodium-ion diffusion coefficient. These enhanced electrochemical performances of SnO2-N-GNS are due to the N-doping defects and the homogeneous dispersion of SnO2 particles.
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.
