Causes of binder damage in porous battery electrodes and strategies to prevent it
Causes of binder damage in porous battery electrodes and strategies to prevent it
The mechanisms for binder delamination from electrode particles in porous lithium-ion electrodes are considered. The problem is analysed using a model that makes use of a multiscale continuum description of the battery electrode and specifically accounts for the viscoelastic properties of the binder [9]. This model predicts the evolution of the stress fields in the binder in response to: (i) binder swelling due to electrolyte absorption during cell assembly, and; (ii) shrinkage and growth of the electrode particles during cell cycling. The model predictions provide a cogent explanation for morphological damage seen in microscopy images of real cathodes. The effects of altering electrode particle shape, binder rheology and cycling rates on binder delamination are all investigated and used to make suggestions on how electrode lifetimes could be extended.
Lithium-ion polymer batteries, degradation mechanisms, binder delamination, mathematical models, viscoelastic constitutive relations, silicon anodes.
140-151
Foster, Jamie M.
7cf00fd5-1568-4021-b15f-7e6aeb7cce2f
Huang, Xiosong
4b7e7e2d-2443-4d88-a114-037bc02fcea1
Jiang, Meng
0d5e4e10-b66e-4b06-b62e-b1f4cff8250a
Chapman, Stephen Jon
c8a4c164-ceef-46df-9f50-e64d29fbcda1
Protas, Bartosz
6eaf58f4-b584-498a-af16-cd2c3f1f289e
Richardson, Giles
3fd8e08f-e615-42bb-a1ff-3346c5847b91
1 May 2017
Foster, Jamie M.
7cf00fd5-1568-4021-b15f-7e6aeb7cce2f
Huang, Xiosong
4b7e7e2d-2443-4d88-a114-037bc02fcea1
Jiang, Meng
0d5e4e10-b66e-4b06-b62e-b1f4cff8250a
Chapman, Stephen Jon
c8a4c164-ceef-46df-9f50-e64d29fbcda1
Protas, Bartosz
6eaf58f4-b584-498a-af16-cd2c3f1f289e
Richardson, Giles
3fd8e08f-e615-42bb-a1ff-3346c5847b91
Foster, Jamie M., Huang, Xiosong, Jiang, Meng, Chapman, Stephen Jon, Protas, Bartosz and Richardson, Giles
(2017)
Causes of binder damage in porous battery electrodes and strategies to prevent it.
Journal of Power Sources, 350, .
(doi:10.1016/j.jpowsour.2017.03.035).
Abstract
The mechanisms for binder delamination from electrode particles in porous lithium-ion electrodes are considered. The problem is analysed using a model that makes use of a multiscale continuum description of the battery electrode and specifically accounts for the viscoelastic properties of the binder [9]. This model predicts the evolution of the stress fields in the binder in response to: (i) binder swelling due to electrolyte absorption during cell assembly, and; (ii) shrinkage and growth of the electrode particles during cell cycling. The model predictions provide a cogent explanation for morphological damage seen in microscopy images of real cathodes. The effects of altering electrode particle shape, binder rheology and cycling rates on binder delamination are all investigated and used to make suggestions on how electrode lifetimes could be extended.
Text
paper_accepted
- Accepted Manuscript
More information
Accepted/In Press date: 9 March 2017
e-pub ahead of print date: 24 March 2017
Published date: 1 May 2017
Keywords:
Lithium-ion polymer batteries, degradation mechanisms, binder delamination, mathematical models, viscoelastic constitutive relations, silicon anodes.
Organisations:
Applied Mathematics
Identifiers
Local EPrints ID: 406154
URI: http://eprints.soton.ac.uk/id/eprint/406154
ISSN: 0378-7753
PURE UUID: d305f89a-dce4-40d7-a697-9bf00152776a
Catalogue record
Date deposited: 10 Mar 2017 10:40
Last modified: 16 Mar 2024 05:07
Export record
Altmetrics
Contributors
Author:
Jamie M. Foster
Author:
Xiosong Huang
Author:
Meng Jiang
Author:
Stephen Jon Chapman
Author:
Bartosz Protas
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics
