Promises, Challenges, and Recent Progress of Inorganic Solid-State Electrolytes for All-Solid-State Lithium Batteries

Area of Science:

• Materials Science
• Electrochemistry
• Energy Storage

Background:

• All-solid-state lithium batteries (ASSLBs) promise safer, higher-energy-density alternatives to conventional lithium-ion batteries.
• Solid-state electrolytes (SSEs) are crucial for ASSLB development, enabling improved safety, energy density, and operational temperature range.

Purpose of the Study:

• To provide a comprehensive survey of emerging inorganic lithium-ion-based solid-state electrolytes (SSEs).
• To discuss ion-transport mechanisms, preparation methods, and key challenges in SSE development for ASSLBs.

Main Methods:

• Literature review of recent advances in SSEs.
• Discussion of techniques to enhance ionic conductivity, such as substitution and mechanical strain.
• Analysis of chemical stability, electrochemical compatibility, and electrode-SSE interface issues.

Main Results:

• Overview of various classes of SSEs and their preparation methods.
• Highlighting strategies to improve ionic conductivity and address stability concerns.
• Identification of critical research areas for advancing SSE technology.

Conclusions:

• Advances in SSEs are vital for realizing the full potential of ASSLBs in next-generation energy storage.
• Addressing challenges in stability and interfacial properties is key for practical ASSLB applications.
• Future research should focus on optimizing SSEs for improved performance and manufacturability.