| abstract |
The present invention is to form a cell for a lithium ion battery having a porosity of 20-35% and comprising at least one sacrificial salt material for a positive electrode, a material for a negative electrode, a separator, and an electrolyte. The following sequential steps: (a) heating the cell to a temperature T of 30-45 ° C., and (b) the cell at 4.8 V or less, preferably 4.6-4. Charging to a potential of 8V, even more preferably 4.7 to 4.8V. [Selection figure] None |