Solid Electrolytes
| Polymers | Oxides | Sulfides | |
|---|---|---|---|
| Ion Conductitivity(S/cm) |
10-4 |
10-5 ~ 10-3 |
10-3 ~ 10-2 |
| Ion Conductitivity | Fair | Good | Excellent |
| Processibility | Excellent | Poor | Good |
| Heat Stability | Good | Excellent | Excellent |
| Moisture Stability | Poor | Fair | Poor |
Sulfide Solid Electrolytes
Polymer-based all solid battery is already applied to some commercial cases, but is not expanded due to limitation in performance and application.
Global major battery makers and automobile OEMs have a plan to commercialize the sulfide-based all solid batteries by 2027.
Sulfide solid electrolytes are divided into crystalline and non-crystalline types depending on their crystal structure.
LGPS and Argyrodite are crystalline, and non-crystalline has Thio-LISICON and Non-Thio-LISICON.
By the way, Argyrodite structure is expected to show higher potential for commercialization.