期刊
COMPUTATIONAL MATERIALS SCIENCE
卷 136, 期 -, 页码 297-305出版社
ELSEVIER
DOI: 10.1016/j.commatsci.2017.05.012
关键词
Thermal runaway; Lithium-ion battery; Crack detection; Machine learning; 3D microstructure; Stochastic modelling
资金
- BMBF [05M13VUA]
- Engineering and Physical Sciences Research Council [1800750] Funding Source: researchfish
It is an open question how the particle microstructure of a lithium-ion electrode influences a potential thermal runaway. In order to investigate this, information on the structural changes, in particular cracked particles, caused by the failure are desirable. For a reliable analysis of these changes a reasonably large amount of data is necessary, which necessitates automatic extraction of particle cracks from tomographic 3D image data. In this paper, a classification model is proposed which is able to decide whether a pair of particles is the result of breakage, of the image segmentation, or neither. The classifier is developed using simulated data based on a 3D stochastic particle model. Its validity is tested by applying the methodology to hand-labelled data from a real electrode. For this dataset, an overall accuracy of 73% is achieved. (C) 2017 Elsevier B.V. All rights reserved.
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