Toward 400 Wh/kg Sulfide-Based All-Solid-State Lithium Metal Batteries: From Interfacial Failure Mechanisms to Pouch...

Area of Science:

• Materials Science
• Electrochemistry
• Energy Storage

Background:

• High energy density power systems are crucial for electric vehicles, space shuttles, and drones.
• Sulfide-based all-solid-state lithium metal batteries (ASSLMBs) are promising due to high ionic conductivity and capacity.
• Current limitations include interfacial instability, mechanical fragility, and manufacturing hurdles.

Purpose of the Study:

• To outline obstacles in achieving >400 Wh/kg in ASSLMBs.
• To present solutions focusing on cathodes, anodes, and cell design.
• To discuss future research and industrialization pathways for commercialization.

Main Methods:

• Review and analysis of current challenges in ASSLMB development.
• Focus on material interfaces, electrode fabrication, and cell integration.
• Exploration of design strategies for high-capacity cathodes and lithium metal anodes.

Main Results:

• Identified key obstacles hindering practical application of ASSLMBs.
• Proposed solutions for enhancing interfacial stability and mechanical properties.
• Highlighted the importance of multiscale collaborative design and manufacturing.

Conclusions:

• Achieving high energy density in ASSLMBs requires addressing interfacial, mechanical, and processing challenges.
• Simple, low-cost design strategies are essential for accelerating commercialization.
• Further research and industrial collaboration are needed for widespread adoption.