SnO2-WO3 nanoparticles modified in ultra-thin graphite nanosheets as an anode material for high-performance lithium-ion batteries.

[Display omitted] • Nano-SnO 2 provides more active sites for lithium storage. • WO 3 maintains the volume size of SnO 2 and prevents the chaotic aggregation of Sn. • Graphite shortens the transmission distance of electrons and Li+ and prevents the volume expansion of SnO 2 -WO 3. • School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou, Guangdong 510006, PRC. SnO 2 -WO 3 @C (SWC) anode material was synthesized by hydrothermal and ball milling methods. WO 3 has a catalytic effect and enhances the efficiency of Sn/Li 2 O conversion to SnO 2 while also effectively preventing the coarsening and stacking of Sn. Thus, SWC shows a large reversible capacity of 1070.4 mAh/g after 200 cycles at 0.2 A/g, a remarkable rate performance of 518.7 mAh/g at 5.0 A/g and a stable long-term cyclability of 1433.3 mAh/g after 900 cycles at 1.0 A/g. So, SWC is expected to become the mainstream choice for anode electrode materials in lithium-ion batteries (LIBs). [ABSTRACT FROM AUTHOR]