Research progress on functional solid polymer electrolytes for lithium batteries

Area of Science:

• Materials Science
• Electrochemistry
• Energy Storage

Background:

• Solid state electrolytes (SSEs) present advantages over liquid electrolytes in safety, stability, and electrochemical window.
• Commercialization of SSEs is hindered by significant challenges.
• This review focuses on recent advancements in SSEs for lithium batteries.

Purpose of the Study:

• To provide an overview of the latest research on SSEs for lithium batteries.
• To highlight strategies for wide temperature range operation, interface optimization, and component loss inhibition.
• To discuss novel modification strategies for advanced SSEs.

Main Methods:

• Review of recent literature on SSEs for lithium batteries.
• Focus on techniques including molecular design, in situ polymerization, composite structures, single ion conductors, nano functional components, and special polymers.
• Analysis of modification strategies: flame retardant, self-healing, intelligent responsive, and environmentally friendly electrolytes.

Main Results:

• Various techniques effectively enhance the performance of advanced SSEs.
• Key areas for improvement include wide temperature range operation, interface functionality, and inhibition of active component loss.
• Novel modification strategies show promise for next-generation SSEs.

Conclusions:

• Future research should prioritize improving ion conductivity, maintaining mechanical strength and stability, and exploring new material systems.
• Optimizing electrode interfaces is crucial for high-performance solid-state batteries.
• Advancements will support the widespread adoption of solid-state batteries in electronics, electric vehicles, and energy storage.