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

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.

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