Detailed Information

Size-dependent fracture of Si nanowire battery anodes

Cited 339 time in Web of Science Cited 365 time in Scopus

Ryu, IllChoi, Jang Wook; Cui, Yi; Nix, William D.

Issue Date
Pergamon Press Ltd.
Journal of the Mechanics and Physics of Solids, Vol.59 No.9, pp.1717-1730
We use a unique transmission electron microscope (TEM) technique to show that Si nanowires (NWs) with diameters in the range of a few hundred nanometers can be fully lithiated and delithiated without fracture, in spite of the large volume changes that occur in this process. By analyzing the stresses associated with lithiation and delithiation we conclude that the process does not occur by the growth of discrete crystalline phases; rather it occurs by amorphization of the Si NWs followed by diffusion of Li into the structure. By accounting for the large deformation associated with this process and by including the effects of pressure gradients on the diffusion of Li, we show that Si NWs with diameters less than about 300 nm could not fracture even if pre-existing cracks were present in the NW. These predictions appear to be in good agreement with the experiment. Published by Elsevier Ltd.
Files in This Item:
There are no files associated with this item.
Appears in Collections:

Related Researcher

Ryu, Ill Image

Ryu, Ill류일
  • College of Engineering
  • Department of Materials Science & Engineering
Research Area Fundamental deformation mechanisms, Optimal desing in nanostructures, Reliability Analysis in Nanostructures


Item View & Download Count

  • mendeley

Items in S-Space are protected by copyright, with all rights reserved, unless otherwise indicated.