Solid state batteries are a new kind of battery technology that has emerged in recent years as a promising alternative to traditional lithium-ion batteries. These batteries are called "solid state" because they use solid electrolytes instead of liquid or gel ones, which are found in most other battery types.
The solid electrolyte in a solid state battery is usually made up of a material that allows charged particles, such as lithium ions, to move through it. These charged particles are what allow the battery to store and release energy.
When a solid state battery is charged, lithium ions move from the cathode to the anode through the solid electrolyte. This is similar to how traditional lithium-ion batteries work. The difference is that in a traditional battery, the electrolyte is a liquid, while in a solid state battery it is solid.
When the battery is discharged, the process is reversed, and the lithium ions move from the anode back to the cathode through the solid electrolyte. As the lithium ions move back and forth, they exchange electrons with the electrodes, creating an electrical current.
Solid state batteries have several advantages over traditional lithium-ion batteries. For example, they can store more energy in the same amount of space, which means that they could make electric vehicles and portable electronics much more efficient. They are also safer, as they are less prone to overheating or catching fire.
However, solid state batteries are still relatively new and expensive to manufacture. Researchers are working on developing new materials for the solid electrolyte, which could make them more efficient and cost-effective in the future. Overall, solid state batteries have the potential to revolutionize the way we use energy, and could play a major role in creating a more sustainable and efficient future.