Royal Society of Chemistry, Energy & Environmental Science, 12(8), p. 3531-3538
DOI: 10.1039/c5ee02074c
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Uniform yolk-shell Sn4P3@C nanospheres were facilely synthesized via a top-down phosphorized route with yolk-shell Sn@C nanospheres as the precursor. As anode materials for Na-ion batteries, they exhibit a exhibit very high reversible capacity (790 mA h g−1), superior rate capability (reversible capabilities of 720, 651, 581, 505, and 421 mA h g−1 at 0.2C, 0.4C, 0.8C, 1.5C, and 3C, respectively) and stable cycling performance (a high capacity of 360 mA h g−1 at 1.5C after long 400 cycles).