Sn4+xP3 @ Amorphous Sn‐P Composites as Anodes for Sodium‐Ion Batteries with Low Cost, High Capacity, Long Life, and Superior Rate Capability

Sn4+xP3 @ amorphous Sn-P composites are a promising cheap anode material for sodium-ion batteries with high capa­city (502 mA h g−1 at a current density of 100 mA g−1), long cycling stability (92.6% capacity retention up to 100 cycles), and high rate capability (165 mA h g−1 at the 10C rate). As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.