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Microstructural degradation of silicon electrodes during lithiation observed via operando X-ray tomographic imaging

Taiwo, Oluwadamilola O.; Heenan, Thomas M M; Finegan, Donal P; Paz-García, Juan M. LU ; Hall, Stephen A. LU ; Mokso, Rajmund LU ; Villanueva-Pérez, Pablo; Patera, Alessandra; Brett, Daniel J L and Shearing, Paul R. (2017) In Journal of Power Sources 342. p.904-912
Abstract

Due to their high theoretical capacity compared to that of state-of-the-art graphite-based electrodes, silicon electrodes have gained much research focus for use in the development of next generation lithium-ion batteries. However, a major drawback of silicon as an electrode material is that it suffers from particle fracturing due to huge volume expansion during electrochemical cycling, thus limiting commercialization of such electrodes. Understanding the role of material microstructure in electrode degradation will be instrumental in the design of stable silicon electrodes. Here, we demonstrate the application of synchrotron-based X-ray tomographic microscopy to capture and track microstructural evolution, phase transformation and... (More)

Due to their high theoretical capacity compared to that of state-of-the-art graphite-based electrodes, silicon electrodes have gained much research focus for use in the development of next generation lithium-ion batteries. However, a major drawback of silicon as an electrode material is that it suffers from particle fracturing due to huge volume expansion during electrochemical cycling, thus limiting commercialization of such electrodes. Understanding the role of material microstructure in electrode degradation will be instrumental in the design of stable silicon electrodes. Here, we demonstrate the application of synchrotron-based X-ray tomographic microscopy to capture and track microstructural evolution, phase transformation and fracturing within a silicon-based electrode during electrochemical lithiation.

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Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Degradation, Lithiation, Particle fracturing, Silicon electrode, X-ray CT
in
Journal of Power Sources
volume
342
pages
9 pages
publisher
Elsevier
external identifiers
  • scopus:85008711877
  • wos:000396186300103
ISSN
0378-7753
DOI
10.1016/j.jpowsour.2016.12.070
language
English
LU publication?
yes
id
27bc37c0-2157-4688-af5d-dbee857f0bc7
date added to LUP
2017-02-03 09:57:54
date last changed
2018-01-07 11:47:59
@article{27bc37c0-2157-4688-af5d-dbee857f0bc7,
  abstract     = {<p>Due to their high theoretical capacity compared to that of state-of-the-art graphite-based electrodes, silicon electrodes have gained much research focus for use in the development of next generation lithium-ion batteries. However, a major drawback of silicon as an electrode material is that it suffers from particle fracturing due to huge volume expansion during electrochemical cycling, thus limiting commercialization of such electrodes. Understanding the role of material microstructure in electrode degradation will be instrumental in the design of stable silicon electrodes. Here, we demonstrate the application of synchrotron-based X-ray tomographic microscopy to capture and track microstructural evolution, phase transformation and fracturing within a silicon-based electrode during electrochemical lithiation.</p>},
  author       = {Taiwo, Oluwadamilola O. and Heenan, Thomas M M and Finegan, Donal P and Paz-García, Juan M. and Hall, Stephen A. and Mokso, Rajmund and Villanueva-Pérez, Pablo and Patera, Alessandra and Brett, Daniel J L and Shearing, Paul R.},
  issn         = {0378-7753},
  keyword      = {Degradation,Lithiation,Particle fracturing,Silicon electrode,X-ray CT},
  language     = {eng},
  month        = {02},
  pages        = {904--912},
  publisher    = {Elsevier},
  series       = {Journal of Power Sources},
  title        = {Microstructural degradation of silicon electrodes during lithiation observed via operando X-ray tomographic imaging},
  url          = {http://dx.doi.org/10.1016/j.jpowsour.2016.12.070},
  volume       = {342},
  year         = {2017},
}