The "black technology" evolution of lithium batteries: Solid-state batteries vs sodium batteries, is the future here?

Typical symptoms: Solid-state batteries have an energy density of 500 Wh/kg, while sodium batteries are 35% cheaper than lithium batteries.

Lithium batteries haven't figured it out yet, and new technologies are coming?

The truth:

Solid-state batteries: Replace liquid electrolytes with solid ones, which offer high safety and double the energy density (for example, Ganfeng Lithium's semi-solid battery has been used in high-end air conditioners).

Sodium batteries: Use sodium instead of lithium, with abundant resources and lower costs (for example, CATL's sodium batteries will cover 50% of the small appliance market by 2027).

Lithium-sulfur batteries: The theoretical energy density is five times that of lithium batteries, but the lifespan is short (for example, sulfide positive electrode materials degrade after 50 cycles).

Real-life case: A user experienced a vacuum cleaner equipped with sodium batteries first and found that its battery life was 20% shorter than that of the lithium battery version, but the price was 30% lower. Solution:

Focus on the application of solid-state batteries in high-end devices (such as drones and smart watches).

For low-cost devices, sodium batteries can be considered, but don't have overly high expectations for their battery life.