Reversible Lithium Intercalation in Teardrop-Shaped Ultrafine SnP0.94 Particles: An Anode Material for Lithium-Ion Batteries


  • The authors wish to acknowledge the Pohang Light Source (PLS) for the XAS measurements. This work was supported by the Division of Advanced Batteries in the NGE Program (Project No. 10016439). Supporting Information is available online from Wiley InterScience or from the author.


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Uniformly dispersed teardrop-shaped tin phosphide particles for lithium-ion batteries are synthesized by the reaction of tin acetate in a mixed solution of trioctyl phosphine (TOP) and trioctylphosphine oxide (TOPO). Reversible intercalation/deintercalation of lithium ions into/from the tin phosphide is found, giving LixSnP0.94 with x up to 3.91 (740 mA h g–1), and little capacity fading between 0 and 1.2 V.