Ionic Liquid-in-ZIF-8 Electrolyte

Quasi-solid ionic conduction

A quasi-solid composite electrolyte formed by encapsulating a Li-containing ionic liquid within the pores of ZIF-8, providing a solid-state ion conduction pathway for Li-ion batteries.

Wen, Yang · Rodenbücher, Christian · Luo, Jiangshui · Korte, Carsten

Solid State Ionics 2026

Specifications

Ionic conductivity

{'zh': '0.36', 'en': '0.36'} mS·cm⁻¹

Activation energy

{'zh': '0.26', 'en': '0.26'} eV

Capacity retention

{'zh': '74.9', 'en': '74.9'} %

Advantages

Prevents ionic liquid leakage

The ionic liquid is confined within the nanocages of ZIF-8, forming a quasi-solid that prevents leakage.

Conductivity meets battery requirements

At 80°C, the ionic conductivity of 0.36(2) mS·cm⁻¹ meets the performance criteria for lithium-ion battery electrolytes.

Applications

• Quasi-solid electrolytes：Encapsulating Li-containing ionic liquid in MOF pores yields a quasi-solid electrolyte that alleviates leakage of liquid electrolytes.
• Electrochemical energy storage devices：The MOF-based composite electrolyte can be used in quasi-solid Li-ion batteries to enhance safety of energy storage devices.