The morphology-controlled synthesis of a nanoporous-antimony anode for high-performance sodium-ion batteries

Published

Journal Article

© 2016 The Royal Society of Chemistry. We have presented a comprehensive study of using chemical dealloying methods to control the morphology of nanoporous-antimony (NP-Sb) and the size of Sb particles. For the first time, depending on the regulation of the Al-Sb alloy composition, coral-like NP-Sb (NP-Sb70), honeycomb-like NP-Sb (NP-Sb80) and Sb particles (Sb10, Sb30 and Sb45) with different sizes were prepared through chemical dealloying of Al 30 Sb 70 , Al 20 Sb 80 , Al 90 Sb 10 , Al 70 Sb 30 and Al 55 Sb 45 (at%) alloy ribbon precursors respectively, a top-down process. The NP-Sb70 delivered a high capacity of 573.8 mA h g -1 after 200 cycles at a rate of 100 mA g -1 with good rate capability as anode for sodium-ion batteries (SIBs). The excellent electrochemical performance is because of its innovative electrode design, which ensures strong structural integrity, high sodium ion accessibility, and fast electrode transport. This scalable strategy shall pave the way for the mass production of large-capacity electrodes for SIBs and other energy storage systems, providing new guidelines for the optimization of the synthesis of nanostructures.

Full Text

Duke Authors

Cited Authors

  • Liu, S; Feng, J; Bian, X; Liu, J; Xu, H

Published Date

  • April 1, 2016

Published In

Volume / Issue

  • 9 / 4

Start / End Page

  • 1229 - 1236

Electronic International Standard Serial Number (EISSN)

  • 1754-5706

International Standard Serial Number (ISSN)

  • 1754-5692

Digital Object Identifier (DOI)

  • 10.1039/c5ee03699b

Citation Source

  • Scopus