Abstract
Most lithium ion battery electrodes experience large volume expansion and contraction during lithiation and delithiation, respectively. Electrode failure, in the form of fracture and decrepitation, can occur as a result of repeated volume changes. In this paper, we provide an overview of our recent work on modeling the evolution of concentration, stress, and strain energy within a spherical- or cylindrical-electrode element under various charging-discharging conditions. Based on the analytic results, we propose tensile stress and strain energy based criteria for the initiation and propagation of cracks within the electrodes. We will also discuss "size effects" on stresses and fracture of electrodes. These results may help guide the development of new materials for lithium ion batteries with enhanced durability and performance.
Original language | English |
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Title of host publication | IUTAM Symposium on Surface Effects in the Mechanics of Nanomaterials and Heterostructures - Proceedings of the IUTAM Symposium |
Editors | Alan Cocks, Jianxiang Wang |
Pages | 203-215 |
Number of pages | 13 |
DOIs | |
State | Published - 2013 |
Event | IUTAM Symposium on Surface Effects in the Mechanics of Nanomaterials and Heterostructures, 2010 - Beijing, China Duration: Aug 8 2010 → Aug 12 2010 |
Publication series
Name | IUTAM Bookseries |
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Volume | 31 |
ISSN (Print) | 1875-3507 |
ISSN (Electronic) | 1875-3493 |
Conference
Conference | IUTAM Symposium on Surface Effects in the Mechanics of Nanomaterials and Heterostructures, 2010 |
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Country/Territory | China |
City | Beijing |
Period | 8/8/10 → 8/12/10 |
Bibliographical note
Publisher Copyright:© Springer Science+Business Media Dordrecht 2013.
Keywords
- Diffusion induced stress
- Fracture
- Lithium ion batteries
- Size effect
ASJC Scopus subject areas
- Civil and Structural Engineering
- Automotive Engineering
- Aerospace Engineering
- Acoustics and Ultrasonics
- Mechanical Engineering