Advanced

4D analysis of the microstructural evolution of Si-based electrodes during lithiation : Time-lapse X-ray imaging and digital volume correlation

Paz-Garcia, J. M. LU ; Taiwo, O. O.; Tudisco, E. LU ; Finegan, D. P.; Shearing, P. R.; Brett, D. J L and Hall, S. A. LU (2016) In Journal of Power Sources 320. p.196-203
Abstract

Silicon is a promising candidate to substitute or complement graphite as anode material in Li-ion batteries due, mainly, to its high energy density. However, the lithiation/delithiation processes of silicon particles are inherently related to drastic volume changes which, within a battery's physically constrained case, can induce significant deformation of the fundamental components of the battery that can eventually cause it to fail. In this work, we use non-destructive time-lapse X-ray imaging techniques to study the coupled electrochemo-mechanical phenomena in Li-ion batteries. We present X-ray computed tomography data acquired at different times during the first lithiation of custom-built silicon-lithium battery cells.... (More)

Silicon is a promising candidate to substitute or complement graphite as anode material in Li-ion batteries due, mainly, to its high energy density. However, the lithiation/delithiation processes of silicon particles are inherently related to drastic volume changes which, within a battery's physically constrained case, can induce significant deformation of the fundamental components of the battery that can eventually cause it to fail. In this work, we use non-destructive time-lapse X-ray imaging techniques to study the coupled electrochemo-mechanical phenomena in Li-ion batteries. We present X-ray computed tomography data acquired at different times during the first lithiation of custom-built silicon-lithium battery cells. Microstructural volume changes have been quantified using full 3D strain field measurements from digital volume correlation analysis. Furthermore, the extent of lithiation of silicon particles has been quantified in 3D from the grey-scale of the tomography images. Correlation of the volume expansion and grey-scale changes over the silicon-based electrode volume indicates that the process of lithiation is kinetically affected by the reaction at the Si/LixSi interface.

(Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Digital volume correlation, Lithium-ion battery, Silicon electrode, X-ray computed tomography
in
Journal of Power Sources
volume
320
pages
8 pages
publisher
Elsevier
external identifiers
  • Scopus:84964608068
  • WOS:000376828900022
ISSN
0378-7753
DOI
10.1016/j.jpowsour.2016.04.076
language
English
LU publication?
yes
id
e4ee39fe-7876-47c7-9308-8c83155ef4b5
date added to LUP
2016-05-19 13:21:12
date last changed
2017-01-22 04:30:18
@article{e4ee39fe-7876-47c7-9308-8c83155ef4b5,
  abstract     = {<p>Silicon is a promising candidate to substitute or complement graphite as anode material in Li-ion batteries due, mainly, to its high energy density. However, the lithiation/delithiation processes of silicon particles are inherently related to drastic volume changes which, within a battery's physically constrained case, can induce significant deformation of the fundamental components of the battery that can eventually cause it to fail. In this work, we use non-destructive time-lapse X-ray imaging techniques to study the coupled electrochemo-mechanical phenomena in Li-ion batteries. We present X-ray computed tomography data acquired at different times during the first lithiation of custom-built silicon-lithium battery cells. Microstructural volume changes have been quantified using full 3D strain field measurements from digital volume correlation analysis. Furthermore, the extent of lithiation of silicon particles has been quantified in 3D from the grey-scale of the tomography images. Correlation of the volume expansion and grey-scale changes over the silicon-based electrode volume indicates that the process of lithiation is kinetically affected by the reaction at the Si/Li<sub>x</sub>Si interface.</p>},
  author       = {Paz-Garcia, J. M. and Taiwo, O. O. and Tudisco, E. and Finegan, D. P. and Shearing, P. R. and Brett, D. J L and Hall, S. A.},
  issn         = {0378-7753},
  keyword      = {Digital volume correlation,Lithium-ion battery,Silicon electrode,X-ray computed tomography},
  language     = {eng},
  month        = {07},
  pages        = {196--203},
  publisher    = {Elsevier},
  series       = {Journal of Power Sources},
  title        = {4D analysis of the microstructural evolution of Si-based electrodes during lithiation : Time-lapse X-ray imaging and digital volume correlation},
  url          = {http://dx.doi.org/10.1016/j.jpowsour.2016.04.076},
  volume       = {320},
  year         = {2016},
}