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


  • This work was supported by the Ministry of Information and Communication (MIC) in Korea, and the Korea Science and Engineering Foundation (KOSEF) through the Research Center for Energy Conversion and Storage at Seoul National University.


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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).