This technology is a solid-state electrolyte that enhances ionic conductivity and transference numbers by covalently bonding diethylene glycol (DEG) to the pyridinic N-sites of a porous crystalline covalent organic framework (COF) and adding ionic succinonitrile to induce lithium-ion hopping, vehicle, and free diffusion behaviors.
Conventional inorganic solid-state electrolytes are difficult to process and suffer from high interfacial contact resistance with electrodes. Amorphous polymer electrolytes also have limitations, including low room-temperature ionic conductivity, thermal and electrochemical instability, and reduced charge-discharge efficiency due to dendrite growth.
This technology involves introducing diethylene glycol via covalent bonding into a crystalline organic framework obtained by reacting triformylbenzene with a pyridine compound, and incorporating ionic succinonitrile and LiTFSI to promote lithium-ion dissociation and secure continuous ion transport pathways. It can be applied to lithium all-solid-state secondary batteries, thin-film batteries for wearable devices, and high-safety electric vehicle batteries, enabling fast lithium-ion movement even at room temperature without the risk of liquid electrolyte leakage.
This invention was developed with support from the Ministry of Science and ICT for photosensitive nanocluster artificial antibodies for multimodal cancer immunotherapy.
US2026-0005299A1, WO2025-037759A1
