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We fabricated tin phosphide-carbon (Sn 4 P 3 /C) composite film by aerosol deposition (AD) and investigated its electrochemical performance for a lithium-ion battery anode. Sn 4 P 3 /C composite powders prepared by a ball milling was used as raw material and deposited onto a stainless steel substrate to form the composite film via impact consolidation. The Sn 4 P 3 /C composite film fabricated by AD showed much better electrochemical performance than the Sn 4 P 3 film without complexing carbon. Although both films showed initial discharge (Li + extraction) capacities of approximately 1000 mAh g -1 , Sn 4 P 3 /C films retained higher reversible capacity above 700 mAh g -1 after 100 cycles of charge and discharge processes while the capacity of Sn 4 P 3 film rapidly degraded with cycling. In addition, by controlling the potential window in galvanostatic testing, Sn 4 P 3 /C composite film retained the reversible capacity of 380 mAh g -1 even after 400 cycles. The complexed carbon works not only as a buffer to suppress the collapse of electrodes by large volume change of Sn 4 P 3 in charge and discharge reactions but also as an electronic conduction path among the atomized active material particles in the film.

Characterization of Sn4P3–Carbon Composite Films for Lithium-Ion Battery Anode Fabricated by Aerosol Deposition