Towards cost-efficient and scalable fabrication of SbSn/SP@C electrode for sodium-ion batteries

With high capacity and low redox potential, Sn-based materials represent promising anodes for sodium-ion batteries (SIBs). However, the large volume expansion during the cycling process limits their application. Herein, we report a cost-effective, simple, and non-toxic SbSn/SP@C electrode for SIBs via ball milling process and sucrose reduction method. The SbSn/SP@C electrode exhibits high cycle stability and good reversible capacity for SIBs (400.3 mAh g −1 after 100 cycles). Consequently, SbSn/SP@C electrode can afford an effectively carbon-based conductive system, which buffers large volume change of SnSb alloy during the cycling process and provides promising electrochemical performance in Na storage. Graphical abstract