期刊
CELL REPORTS PHYSICAL SCIENCE
卷 2, 期 9, 页码 -出版社
CELL PRESS
DOI: 10.1016/j.xcrp.2021.100554
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资金
- US Department of Energy (DOE), Office of Science, Office of Basic Energy Sciences [DE-AC02-76SF00515]
- Shanghai Jiao Tong University
- Natural Science Foundation of China [22008154, 2167165]
- SINOPEC [420038-1]
- Natural Science Foundation of Beijing [Z20J00042]
- NewtonAdvanced Fellowships
- Department of Health and Human Services of the National Institutes of Health [R44GM133287, R43GM112413]
The manufacturing of commercial lithium-ion batteries involves sophisticated production processes, with different cell defects having an impact on battery performance. Inconsistent production can result in self-discharging of batteries.
The manufacturing of commercial lithium-ion batteries (LIBs) involves a number of sophisticated production processes. Various cell defects can be induced, and, depending on their structural and chemical characteristics, they could lead to acute failure and/ or chronic degradation. Although tremendous efforts have been devoted to develop a robust quality control (QC) procedure, the functional role of the cell defects is not well understood. Here, we address this question through a systematic experimental study of commercial 186 50-type LIBs that have failed the QC inspection due to a self-discharging effect. We identify and recover the defective regions from the cell and conduct a comprehensive investigation from the chemical, structural, and morphological perspectives. Our results reveal how the structural defects affect the cell performance, which is highly important to industry-scale battery production.
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