Changes in performance and applications
From Volta to Li-ion batteries. Development of lithium secondary batteries

The main performance criterion of Li-ion batteries is energy density by mass and/or volume. In 1992, the energy density stored in a cylindrical cell 18650 is 80 Wh · kg^-1 and 200 Wh · L^-1. The progress achieved continuously thereafter resulted in a more than tripling of these values (280 Wh · kg^-1 and more than 700 Wh · L^-1 in 2018) (figure 8). The increase in energy density is in part linked to the evolution of the materials making up the battery, and first and foremost the electrode materials. In the case of the 18650 cells with...