Effects of size and concentration on diffusion-induced stress in lithium-ion batteries

Journal Article · Thu Jul 14 04:00:00 EDT 2016 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4958302· OSTI ID:22597873

Ma, Zengsheng; Gao, Xiang ^[1]; Wang, Yan ^[2]; Lu, Chunsheng ^[3]

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1. National–Provincial Laboratory of Special Function Thin Film Materials, and School of Materials Science and Engineering, Xiangtan University, Hunan 411105 (China)
2. School of Information and Electronic Engineering, Hunan University of Science and Technology, Hunan 411201 (China)
3. Department of Mechanical Engineering, Curtin University, Perth, Western Australia 6845 (Australia)

Capacity fade of lithium-ion batteries induced by chemo-mechanical degradation during charge-discharge cycles is the bottleneck in design of high-performance batteries, especially high-capacity electrode materials. Stress generated due to diffusion-mechanical coupling in lithium-ion intercalation and deintercalation is accompanied by swelling, shrinking, and even micro-cracking. In this paper, we propose a theoretical model for a cylindrical nanowire electrode by combining the bond-order-length-strength and diffusion theories. It is shown that size and concentration have a significant influence on the stress fields in radial, hoop, and axial directions. This can explain why a smaller electrode with a huge volume change survives in the lithiation/delithiation process.

• OSTI ID: 22597873
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 2 Vol. 120; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CAPACITY
CLATHRATES
CONCENTRATION RATIO
COUPLING
CRACKING
CYLINDRICAL CONFIGURATION
DIFFUSION
ELECTRODES
LITHIUM
LITHIUM ION BATTERIES
NANOWIRES
STRESSES
SWELLING