Sulfide and Oxide Inorganic Solid Electrolytes for All-Solid-State Li Batteries: A Review

Area of Science:

• Materials Science
• Electrochemistry
• Energy Storage

Background:

• Commercial batteries rely on liquid electrolytes, posing safety and stability concerns.
• Solid electrolytes are being developed as safer, more stable alternatives for energy storage.

Purpose of the Study:

• To review the history, synthesis, characterization, and ion transport mechanisms of inorganic sulfide and oxide solid electrolytes.
• To discuss fabrication technologies and experimental conditions impacting all-solid-state lithium battery performance.
• To highlight promising solid electrolyte materials for future applications.

Main Methods:

• Literature review of early history, synthesis, characterization, and Li+ ion transport mechanisms.
• Analysis of mechanical properties and fabrication technologies for solid electrolytes.
• Evaluation of experimental conditions influencing electrochemical performance.

Main Results:

• Inorganic sulfide and oxide electrolytes show promise for safer batteries.
• Specific materials like LiPS5Cl, β-Li3PS4, Li7La3Zr2O12, NASICON, and perovskites are identified as promising.
• Fabrication technology and experimental conditions significantly affect battery performance.

Conclusions:

• Solid electrolytes present a viable path toward safer and more stable energy storage solutions.
• Further research and development are needed to overcome challenges for large-scale industrial application of all-solid-state batteries.