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Uniform yolk–shell Sn4P3@C nanospheres as high-capacity and cycle-stable anode materials for sodium-ion batteries

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Liu,  J.
Department Physical Chemistry of Solids (Joachim Maier), Max Planck Institute for Solid State Research, Max Planck Society;

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Kopold,  P.
Scientific Facility Stuttgart Center for Electron Microscopy (Peter A. van Aken), Max Planck Institute for Solid State Research, Max Planck Society;

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van Aken,  P. A.
Scientific Facility Stuttgart Center for Electron Microscopy (Peter A. van Aken), Max Planck Institute for Solid State Research, Max Planck Society;

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Maier,  J.
Department Physical Chemistry of Solids (Joachim Maier), Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Liu, J., Kopold, P., Wu, C., van Aken, P. A., Maier, J., & Yu, Y. (2015). Uniform yolk–shell Sn4P3@C nanospheres as high-capacity and cycle-stable anode materials for sodium-ion batteries. Energy & Environmental Science, 8(12), 3531-3538.


Cite as: https://hdl.handle.net/21.11116/0000-000E-CBA0-8
Abstract
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 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).