Tin Nanodots Encapsulated in Porous Nitrogen‐Doped Carbon Nanofibers as a Free‐Standing Anode for Advanced Sodium‐Ion Batteries

Ultrasmall Sn nanodots (1–2 nm) are homogeneously encapsulated in porous N-doped carbon nanofibers using a simple and scalable electrospinning method. The composite nanofibers weave into flexible free-standing membrane and can be directly used as binder- and current collector-free anode for Na-ion batteries, exhibiting excellent electrochemical performance with high reversible capacity, exceptional rate capability, and ultralong cycle life. As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting…

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  Fundamental Research Funds for the Central Universities