期刊 Two-dimensional analysis of progressive delamination in thin film electrodes  

Two-dimensional analysis of progressive delamination in thin film electrodes

作  者:Mei Liu Bo Lu Dong-Li Shi Jun-Qian Zhang 

机构地区:[1]Shanghai Institute of Applied Mathematics and Mechanics,Shanghai University [2]Department of Mechanics, Shanghai University [3]Shanghai Key Laboratory of Mechanics in Energy Engineering, Shanghai University [4]Materials Genome Institute, Shanghai University

出  处:《力学学报:英文版》2018年第2期359-370,共12页

Two-dimensional analysis of progressive delamination in thin film electrodes

摘  要:By employing the two-dimensional analysis, i.e.,plane strain and plane stress, a semi-analytical method is developed to investigate the interfacial delamination in electrodes. The key parameters are obtained from the governing equations, and their effects on the evolution of the delamination are evaluated. The impact of constraint perpendicular to the plane is also investigated by comparing the plane strain and plane stress. It is found that the delamination in the plane strain condition occurs easier, indicating that the constraint is harmful to maintain the structure stability. According to the obtained governing equations, a formula of the dimensionless critical size for delamination is provided, which is a function of the maximum volumetric strain and the Poisson's ratio of the active layer.

By employing the two-dimensional analysis, i.e.,plane strain and plane stress, a semi-analytical method is developed to investigate the interfacial delamination in electrodes. The key parameters are obtained from the governing equations, and their effects on the evolution of the delamination are evaluated. The impact of constraint perpendicular to the plane is also investigated by comparing the plane strain and plane stress. It is found that the delamination in the plane strain condition occurs easier, indicating that the constraint is harmful to maintain the structure stability. According to the obtained governing equations, a formula of the dimensionless critical size for delamination is provided, which is a function of the maximum volumetric strain and the Poisson's ratio of the active layer.

关 键 词:LITHIUM-ION BATTERY THIN film ELECTRODE DELAMINATION Critical size 

Lithium-ion battery Thin film electrode Delamination Critical size 

分 类 号:O3[理学—力学]

 

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