| abstract |
The present invention relates to a method for forming a cell of a lithium-ion battery including a material for a positive electrode, a material for a negative electrode, a separator and an electrolyte, having a void ratio of 20 to 35% and at least one sacrificial salt, The method includes the following sequential steps: (a) heating the cell to a temperature T of 30 to 45 DEG C; And (b) charging the cell to a potential of 4.8 V or less, preferably 4.6 to 4.8 V, more preferably 4.7 to 4.8 V. |