锂离子电池负极极片干燥开裂机理与影响因素研究综述

doi:10.11896/cldb.24070200

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Abstract When the graphite anode colloidal dispersion slurry is coated onto a non-porous rigid substrate and dried, the stresses generated during the drying process may cause cracks in the film. These cracks can negatively impact battery performance, accelerate degradation, and shor-ten the battery’s lifespan. Therefore, understanding the crack characteristics and their formation mechanisms is crucial to preventing cracking of the electrode. While many studies and models have been conducted on the drying cracks of colloidal dispersion films, there is relatively little research on the cracking behavior of battery electrode pieces. This article systematically reveals the cracking mechanism and influencing factors during the drying process of electrode films, deeply analyzes the models of microstructural changes and internal stress development in electrode, and summarizes the progress in research on drying-induced cracking of electrode films. Studies have shown that the stress caused by capillary pressure is the main cause of drying-induced crack, which is mainly affected by the material properties of the electrode and the boundary conditions of the film. Additionally, this paper explores the technical challenges associated with inhibiting drying-induced cracking in the electrode, providing valuable insights for addressing the cracking issues in electrode manufacturing.

Key words： lithium-ion battery drying-induced cracking cracking mechanism coating cracks suppressing electrode cracking

Published: 10 May 2025 Online: 2025-04-28

CLC number:

TM912

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	Articles by authors
	YAO Jieli
	WU Xiaobo
	LIU Zipeng
	TANG Fanrong
	LIAO Changping

Cite this article:

YAO Jieli,WU Xiaobo,LIU Zipeng, et al. A Review of Cracking Mechanisms and Impact Factors in Lithium-ion Battery Anode Electrode During Drying Process[J]. Materials Reports, 2025, 39(9): 24070200-7.

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https://www.mater-rep.com/EN/10.11896/cldb.24070200 OR https://www.mater-rep.com/EN/Y2025/V39/I9/24070200

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