Aging and Safety in Cylindrical Cells
Aging due to cycle life refers to all the degradation processes associated with the charge and discharge processes. Every time a Li-ion cell is cycled, its capacity reduces in an imperceptible way. In the long-term cycling, the cell loses a significant amount of its initial capacity. The rate of capacity loss depends upon multiple factors like operating temperature, cycling protocol, C-rate, and the charge/ discharge cut-off voltages. Determining the actual state of health of the cells after cycling is essential for recycling or repurposing them in secondary-use applications.
Cycle life aging data for cylindrical cells and modules.
The 18650 cell has graphite as anode and nickel-cobalt-aluminum oxide (NCA) as cathode active materials.
Module has a 3P9S (3 cells in parallel (bank), 9 banks in series) configuration.
- Cycle Life Aging Test - Cylindrical Cell - Part 01 - Single Cells
- Link: https://zenodo.org/record/4443456#.Ytl5-3ZKh48
- DOI: 10.5281/zenodo.4443456
- Number of Samples: 21.
- Cycle Life Aging Test - Cylindrical Cell - Part 02 - Modules
- Link: https://zenodo.org/record/4443484#.Ytl7cXZKh48
- DOI: 10.5281/zenodo.4443484
- Number of Samples: 2
The aging data for cylindrical single cells and modules were published in the following journal publications: