Sn4+x P3 @ amorphous Sn-P composites as anodes for sodium-ion batteries with low cost, high capacity, long life, and superior rate capability.

Li, Weijie; Chou, Shu-Lei; Wang, Jia-Zhao; Kim, Jung Ho; Liu, Hua-Kun; Dou, Shi-Xue · Adv Mater · 2014

basic_science · Level V

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Abstract

Sn4+x P3 @ amorphous Sn-P composites are a promising cheap anode material for sodium-ion batteries with high capacity (502 mA h g(-1) at a current density of 100 mA g(-1)), long cycling stability (92.6% capacity retention up to 100 cycles), and high rate capability (165 mA h g(-1) at the 10C rate).