Jump to main content
Jump to site search


Ultrasmall Sn Nanodots Embedded inside N-Doped Carbon Microcages as High-Performance Lithium and Sodium Ion Battery Anodes

Abstract

Sn based materials are the promising anodes both in Li-ion batteries and Na-ion batteries for the high theoretical capacities (994 mAh g-1 for LIBs and 847 mAh g-1 for SIBs, respectively). In order to improve the cycle performance, Sn/N-doped carbon microcages composites (Sn/NMC) with Sn nanodots uniformly embedded inside the N-doped carbon microcages are synthesized through a simple spray drying process, followed by thermal treatment. When used as the electrodes, Sn/NMC exhibits an initial reversible capacity of 780 mAh g-1 at 200 mA g-1, and maintains 472 mAh g-1 after 500 cycles in LIBs. For Na-ion batteries, Sn/NMC delivers an initial reversible capacity of 439 mAh g-1 at 50 mA g-1 and maintains 332 mAh g-1 after 300 cycles. The remarkable electrochemical performance is mainly owing to the advanced structure of Sn/NMC, which could be attributed to the pore-forming using NaCl, and the grain size inhibition of Sn using N-doped carbon. Moreover, this preparation method is accessible to scale up and can be extended to fabricate other electrode materials.

Back to tab navigation
Please wait while Download options loads

Supplementary files

Publication details

The article was received on 17 Feb 2017, accepted on 13 Mar 2017, published on 14 Mar 2017 and first published online on 14 Mar 2017


Article type: Paper
DOI: 10.1039/C7TA01480E
Citation: J. Mater. Chem. A, 2017, Accepted Manuscript
  •   Request permissions

    Ultrasmall Sn Nanodots Embedded inside N-Doped Carbon Microcages as High-Performance Lithium and Sodium Ion Battery Anodes

    H. Ying, S. Zhang, Z. Meng, Z. Sun and W. Han, J. Mater. Chem. A, 2017, Accepted Manuscript , DOI: 10.1039/C7TA01480E

Search articles by author