Lithium-ion battery technology entered public consciousness in the early 1990s, enabling a new generation of portable, rechargeable electronics like laptops and camcorders. Their importance grew by magnitudes with the advent of the smartphone in the early 2000s. Today, they power nearly all the gadgets that define our daily lives, from earbuds to e-scooters. Lithium-ion battery technology is so fundamental to our modern society that its inventors were awarded the Nobel Prize in Chemistry in 2019.