Electrospinning-assisted porous skeleton electrolytes for semi-solid Li-O₂ batteries

Area of Science:

• Materials Science
• Electrochemistry
• Energy Storage

Background:

• Solid-state lithium-oxygen batteries are crucial for high-energy-density and safe energy storage solutions.
• Developing efficient electrolytes is key to overcoming current limitations in lithium-oxygen battery technology.

Purpose of the Study:

• To engineer novel fibrous gel polymer electrolytes (GPEs) for improved performance in solid-state lithium-oxygen batteries.
• To investigate the structural and ionic transport properties of polyacrylonitrile (PAN)-based GPEs.

Main Methods:

• Electrospinning of polyacrylonitrile (PAN) to create a 3D fibrous matrix for GPEs.
• Characterization of GPE structure, electrolyte absorption, and ion transport mechanisms.
• Testing of lithium symmetric cells and Li-O2 batteries utilizing the developed GPEs.

Main Results:

• The 3D fibrous structure of GPEs significantly enhances electrolyte absorption.
• Interconnected PAN matrix promotes strong Li+ interactions, improving ion transport efficiency.
• Developed GPEs enable high current density operation and long cycle life in Li-O2 batteries.

Conclusions:

• Fibrous gel polymer electrolytes based on PAN offer a promising pathway for advanced solid-state lithium-oxygen batteries.
• The enhanced ion transport and structural integrity contribute to improved battery performance and safety.
• This work advances the development of next-generation high-energy storage devices.