Theory of SEI Formation in Rechargeable Batteries: Capacity Fade, Accelerated Aging and Lifetime Prediction
By Matthew B. Pinson, Martin Z. Bazant. 2012
881 citations recorded by the source corpus.
Cycle life is critically important in applications of rechargeable batteries, but lifetime prediction is mostly based on empirical trends, rather than mathematical models. In practical lithium-ion batteries, capacity fade occurs over thousands of cycles, limited by slow electrochemical processes, such as the formation of a solid-electrolyte interphase (SEI) in the negative electrode, which compete with reversible lithium intercalation. Focusing on SEI growth as the canonical degradation mechanism, we show that a simple single-particle model can accurately explain experimentally observed capacity fade in commercial cells with graphite anodes, and predict future fade based on limited accelerated aging data for short times and elevated temperatures. The theory is extended to porous electrodes, predicting that SEI growth is essentially homogeneous throughout the electrode, even at high rates. The lifetime distribution for a sample of batteries is found to be consistent with Gaussian statistics, as predicted by the single-particle model. We also extend the theory to rapidly degrading anodes, such as nanostructured silicon, which exhibit large expansion on ion intercalation. In such cases, large area changes during cycling promote SEI loss and faster SEI growth. Our simple models are able to accurately fit a variety of published experimental data for graphite and silicon anodes.
Subfields: Automotive Engineering, Electrical and Electronic Engineering
View Paper: https://www.semanticscholar.org/paper/bfdf7b588684051bd5f20b3e12084f6c1cf9be88
How researchers see this paper
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In Automotive Engineering
- A. Bower
- Pradeep R. Guduru
- L. Anand
- Elisha Rejovitzky
- Claudio V. Di Leo
- V. Sethuraman
- Yi Cui
- Siva P. V. Nadimpalli
In Electrical and Electronic Engineering
Citations in the corpus
- High mass loading, binder-free MXene anodes for high areal capacity Li-ion batteries (2015, neutral): “Li/Li) during the first lithiation cycle, is most probably due to a formation of a solid electrolyte interface (SEI) layer, as the peak does not appear in the following cycles [29,36].”
- Diffusion–deformation theory for amorphous silicon anodes: The role of plastic deformation on electrochemical performance (2015, methodology): “Following recent models of SEI formation (cf. e.g. Smith et al., 2011; Pinson and Bazant, 2013), and based on our previous paper on modeling SEI growth, Rejovitzky et al.”
- A new on-line method for lithium plating detection in lithium-ion batteries (2020, background): “Since ZCTL and ZSEI contribute to this range and since no significant change in the SEI layer thickness is expected in a single charge/discharge cycle [30, 31], the mid-frequency impedance variations can be attributed largely to the ZCTL.”