A Mesoporous/Crystalline Composite Material Containing Tin Phosphate for Use as the Anode in Lithium‐Ion Batteries

Abstract

Packed to capacity: The incorporation of mesoporous structures as a buffer layer enhances the structural stability of tin phosphate and alleviates the volume expansion of the tin phosphate anode during Li alloying/dealloying (see TEM image). The mesoporous tin phosphate/Sn2P2O7 composite anode shows a large initial capacity (721 mA h g−1) and excellent cyclability (587 mA h g−1 at the 30th cycle).