3D nanostructured multilayer Si/Al film with excellent cycle performance as anode material for lithium-ion battery

Published

Journal Article

© 2015 Elsevier B.V. All rights reserved. The practical application of Si film anode is hindered severely, due to the very low active material loading. In current study, 3-dimensional nanostructured multilayer Si/Al film (3D-MSAF) of 1 μm in total Si thickness was prepared through chemical etching, electrochemical reduction and magnetron sputtering method and served as anode material of lithium-ion battery. This 3D-MSAF anode exhibits excellent cycle performance evidenced by a capacity as high as 1015 mAh g -1 after 120 charge-discharge cycles at the current density of 4.2 A g -1 . Even at a much higher current density of 10.0 A g -1 , the 3D-MSAF anode can still provide a capacity of 919 mAh g -1 . However, the planar multilayer Si/Al film (P-MSAF) with the same Si thickness delivers only a capacity of 336 mAh g -1 after 55 cycles at 4.2 A g -1 . The enhanced electrochemical performance is mainly attributed to the unique structure of the 3D-MSAF electrode, which could effectively accommodate the volume variation and improve the electronic conductivity.

Full Text

Duke Authors

Cited Authors

  • Zhang, Q; Liu, J; Wu, ZY; Li, JT; Huang, L; Sun, SG

Published Date

  • February 5, 2016

Published In

Volume / Issue

  • 657 /

Start / End Page

  • 559 - 564

International Standard Serial Number (ISSN)

  • 0925-8388

Digital Object Identifier (DOI)

  • 10.1016/j.jallcom.2015.10.123

Citation Source

  • Scopus