20 mS cm^-1 Li-argyrodite solid electrolyte produced via facile high-speed-mixing

Area of Science:

• Materials Science
• Electrochemistry
• Solid-State Batteries

Background:

• Sulfide solid electrolytes are crucial for advanced battery technologies.
• Current synthesis methods can be time-consuming and inefficient for industrial scale-up.
• Developing rapid and scalable synthesis routes is essential for next-generation energy storage.

Purpose of the Study:

• To develop a novel, rapid synthesis method for Li5.4PS4.4Cl1.6.
• To evaluate the electrochemical performance of the synthesized solid electrolyte in All-Solid-State Batteries (ASSBs).
• To demonstrate the potential for industrial production of sulfide solid electrolytes.

Main Methods:

• A novel, rapid synthesis technique for Li5.4PS4.4Cl1.6 precursor.
• Sintering of the synthesized precursor.
• Fabrication and electrochemical testing of All-Solid-State Batteries (ASSBs).

Main Results:

• Successful synthesis of Li5.4PS4.4Cl1.6 precursor in 5 minutes.
• Achieved ionic conductivity of 20 mS cm-1 after sintering.
• ASSBs demonstrated excellent electrochemical performance with high loading (20 mg cm-2) and 80% capacity retention after 200 cycles.

Conclusions:

• The proposed rapid synthesis method is a viable and efficient alternative to traditional ball-milling.
• The synthesized Li5.4PS4.4Cl1.6 exhibits promising properties for high-performance ASSBs.
• This advancement is significant for the industrial-scale manufacturing of sulfide solid electrolytes for large-capacity batteries.