Anchoring atomic antimony in an intercalative Mo–S framework<i>via</i>soft covalent bonding for fast-charging and long-lived sodium ion batteries

This work addresses the critical issue of volume expansion of alloy-type Sb anode by dispersing atomic Sb into a robust Mo–S framework via soft Mo–Sb bonds. 60C fast-charging over 10 000 cycles is achieved by utilizing this new Mo 2 SbS 2 anode.