In situ polymerized ether-based polymer electrolytes towards practical lithium metal batteries

Area of Science:

• Materials Science
• Electrochemistry
• Polymer Chemistry

Background:

• Commercial lithium-ion batteries utilize flammable liquid electrolytes, posing significant safety risks like fires.
• Solid polymer electrolytes (SPEs) offer a safer alternative, with ether-based polymers showing excellent stability and lithium metal compatibility.

Purpose of the Study:

• To review the mechanisms of in situ ring-opening polymerization for cyclic ether monomers.
• To analyze ionic conduction in ether-based polymer electrolytes.
• To explore in situ curing mechanisms and assess advancements in cyclic ether monomer polymerization for battery applications.

Main Methods:

• Review of ring-opening polymerization mechanisms for cyclic ether monomers.
• Analysis of ionic conduction properties of ether-based polymer electrolytes.
• Exploration of in situ curing mechanisms for representative cyclic ether monomers.

Main Results:

• In situ ring-opening polymerization simplifies manufacturing and improves solid/solid interfacial contacts.
• Reduced interfacial impedance is achieved through enhanced electrolyte-electrode contact.
• Ether-based polymer electrolytes demonstrate superior stability and compatibility with lithium metal.

Conclusions:

• Ether-based polymer electrolytes are a promising solution for safer lithium-ion batteries.
• In situ polymerization techniques enhance battery performance by optimizing interfacial properties.
• Further research into sustainability initiatives for these advanced electrolytes is warranted.