Journal
SCIENCE CHINA-MATERIALS
Volume 64, Issue 9, Pages 2182-2192Publisher
SCIENCE PRESS
DOI: 10.1007/s40843-020-1613-4
Keywords
energy storage devices; all-in-one; flexible; finite element method; mechanical analysis
Categories
Funding
- National Natural Science Foundation of China [51822205, 21875121]
- Ministry of Science and Technology of China [2019YFA0705600, 2017YFA0206701]
- Natural Science Foundation of Tianjin [18JCJQJC46300, 19JCZDJC31900]
- Ministry of Education of China [B12015]
- China Postdoctoral Science Foundation [2019M650045]
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This research systematically investigated the mechanical behaviors of flexible all-in-one ESDs under bending deformation, considering factors such as thicknesses, Young's moduli, and Poisson's ratios. Visualized and quantified results were analyzed to draw significant conclusions for the design of flexible integrated ESDs with robust mechanical properties, providing guidance for ESDs with high flexibility.
Although a great deal of studies focus on the design of flexible energy storage devices (ESDs), their mechanical behaviors under bending states are still not sufficiently investigated, and the understanding of the corresponding structural conversion therefore still lags behind. Here, we systematically and thoroughly investigated the mechanical behaviors of flexible all-in-one ESDs under bending deformation by the finite element method. The influences of thicknesses, Young's moduli and Poisson's ratios of electrodes and electrolyte were taken into account. Visualized and quantified results including displacement, strain energy, von Mises stress, and tensile, compressive, and interfacial shear stress are demonstrated and analyzed. Based on these results, significant conclusions are drawn for the design of flexible integrated ESDs with robust mechanical properties. This work will provide guidance for the design of ESDs with high flexibility.
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