Abstract

The Sn24P19.3I8/carbon nanotubes was synthesized using the in situ growth method and used as anode material for sodium-ion batteries for the first time. It demonstrates a high initial discharge capacity of 1086.44 mA h g−1 at 0.1 A g−1 and excellent cycling performance with a capacity retention rate of 95% after 100 cycles. Notably, it exhibits a small voltage hysteresis, and the reason for its small voltage hysteresis is explored due to the more symmetrical reaction path, which has a promising application in the field of sodium-ion batteries.

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