What are the advantages of solid-state batteries?

What are the advantages of solid-state batteries?

Advantages of solid-state batteries include:

High safety: Solid electrolytes are non-flammable, leak-free, non-corrosive and non-volatile. Compared with liquid electrolytes, they can greatly reduce safety hazards such as battery combustion or even explosion.

High energy density: Solid-state batteries can withstand higher charging voltages and can use thinner electrolyte layers, which can store more electrical energy under the same volume or weight, helping to increase the cruising range of electric vehicles and other equipment. Studies have shown that its theoretical maximum energy density can reach 900wh/kg, and it can also reach 400wh/kg under current laboratory conditions, which is a significant improvement compared to liquid batteries (usually no more than 300wh/kg).

Long cycle life: The solid electrolyte helps reduce side reactions during the battery charge and discharge process, and can effectively avoid problems such as the formation of SEI film (solid electrolyte interface film) by the liquid electrolyte during the charge and discharge process and the piercing of the separator by lithium dendrites, thus greatly reducing battery life. Improve battery cycle times and service life. For example, some solid-state batteries can still maintain a capacity retention rate of 92% after 2,000 cycles.

Strong temperature adaptability: Solid-state batteries can operate in a wider temperature range and remain stable in high-temperature environments. For example, some solid-state batteries can still work normally under high-temperature conditions above 90°C, and can also adapt to extreme low-temperature environments. Not affected by temperature, improving battery availability and reliability.

Great design flexibility: Solid-state batteries can be manufactured in different shapes and sizes, providing greater flexibility for battery packaging and integration, and making it easier to meet the battery shape and space requirements of different devices.