Solid state batteries as the name suggest use a solid electrolyte instead of a liquid electrolyte that is used in traditional Lithium-ion batteries.
- It follows the same mechanism as traditional Lithium-ion batteries, which is the movement of lithium ions from the cathode to anode during charging and anode to cathode during discharging.
- The movement of lithium ions happens in a similar way, which is through the electrolyte medium.
- Solid state batteries use solid electrolyte instead of liquid electrolyte that is used in traditional Lithium-ion batteries.
- A traditional Lithium-ion battery has a liquid electrolyte along with a separator, which separates the positive and negative electrodes to prevent the possibility of a short circuit. Whereas, a solid-state battery contains a solid electrolyte, which separates the positive and negative electrodes, thereby making the use of a separator unnecessary.
Advantages compared to a traditional Lithium-ion battery (NMC)
- Faster charging (Higher C rate of charge)
- Safer because of the absence of liquid electrolyte, which tends to catch fire.
- Higher power density (Higher C rate of discharge)
- Higher overvoltage value
- Higher nominal voltage
- Overcharging does not lead to a fire.
- Higher cycle life
- Higher durability
- Higher stability
- Higher temperature operations.
- Higher degradation of battery allowed before reaching its end-of-life.
- The higher gravimetric energy density (Wh/Kg).
- A short circuit does not lead to a fire.
- Nail penetration does not lead to a fire.
- No structural limitation, enabling it to be used in various shapes that can be smaller and thinner.
Read More: Solid-State Battery for EVs
Future of Solid State Batteries
A few companies have set up pilot-scale facilities to manufacture solid-state batteries. It has a very good potential to take a good market share in the battery market, especially in the EV segment. Its adoption will ensure that battery fires are a thing of the past.
About Author: Rahul Bollini is an emerging technology R&D specialist. He works with various new technologies. He is one of the very few people in India to have access to Solid State Batteries. He is currently running trials with a company for electric vehicles application.
Very educating. Thank you
Thank you for the concept but the article seems abruptly ended. I was somehow expecting it would have in dept analysis. Have not specified if it reduces or gains weight due to density of materials, how is the typical charge and discharge cycles etc. Also no mention of which cars currently have solid state and which have liquid state batteries. I belive most new car batteries are solid state anyway, but happy to be corrected.
Mullen Automotive is the leader in solid state batteries. Invest in the company’s stock: MULN: NASDAQ