Oxide‐Based Pseudo‐Solid‐State Hybrid Electrolyte Functionalized by Ionic Liquid for Lithium Metal Batteries

Abstract

Solid‐state batteries draw attention as next‐generation batteries that can provide higher energy density and overall stability based on the inherent nonflammability of the solid electrolytes. However, solid electrolytes have a clear limitation of low ionic conductivity due to their high resistance at grain boundaries and interfaces. Herein, oxide‐type solid electrolytes and ionic liquid electrolytes are introduced to reduce the overall resistance and form a clay‐textured composite electrolyte after a hybrid process. This composite electrolyte exhibits a stable state without side reactions and 1.6 ms cm−1 of improved ionic conductivity. This material also demonstrates its high thermal and electrochemical stability by high‐temperature exposure test and the application of bipolar configuration in conventional coin cells with high voltage. Therefore, this original clay‐textured pseudo‐solid‐state hybrid electrolyte is believed to contribute to the studies related to oxide‐type solid electrolytes for advanced solid‐state batteries.

A MnS/MnO-coated S,N-doped carbon anode obtained from a Mn(ii)-coordinated polymer for long-cycle life Li-ion batteries

“…Li-ion batteries (LIBs) are the main technologies used in the electric vehicle and power storage industries. [1][2][3] Currently, the energy density of LIBs is reaching its limit. 4,5 This is mainly because of the low specific capacity (approximately 372 mA h g À1 ) of commercially available graphite-based negative electrodes.…”

A flexible and scalable Li-ion conducting film using a sacrificial template for high-voltage all-solid-state batteries

“…The fabrication of thin and exible lms using ceramicpolymer composites is considered a promising strategy to address the low ionic conductivity of SEs and facilitate cell fabrication. [17][18][19][20] To investigate the impact on lithium-ion conduction in composite electrolytes, several research studies using ceramic powders have been performed. [21][22][23][24][25] Even with an optimized ceramic powder content, Li + ion conduction could not be conrmed owing to the poor formation of a percolation channel.…”