University of PardubiceFaculty of Chemical Technology

University

Employees
|
Students
Česky

Publication detail

C2-Modified 4,5-Dicyanoimidazole Lithium Salts as Next-Generation Electrolytes for Li-Ion Batteries

Authors: Pokorný Daniel | Klikar Milan | Černý Tomáš | Šojdrová Adéla | Syrový Tomáš | Bureš Filip

Year: 2025

Type of publication: ostatní - přednáška nebo poster

Page from-to: nestránkováno

Titles:

Language	Name	Abstract	Keywords
eng	C2-Modified 4,5-Dicyanoimidazole Lithium Salts as Next-Generation Electrolytes for Li-Ion Batteries	Lithium-ion batteries are the backbone of modern consumer electronics, with ongoing innovations targeting improved production efficiency, extended cycle lifetimes, and full recyclability. The conventional electrolytes, based on inorganic lithium salts such as LiPF6 and LiBF4, are increasingly constrained by electrochemical limitations, safety concerns, and raw material availability. Contrarywise, organic lithium salts have emerged as attractive alternatives, offering benefits such as tunable synthesis routes, enhanced safety profiles, and promising electrochemical characteristics. Well-established anionic motifs include sulfonamides (e.g., LiTFSI, LiFSI), boron-based species (e.g., LiDFOB), and organic methanides (e.g., LiTFSM). Among these, heteroaromatic lithium 2 trifluoromethyl-4,5-dicyanoimidazolide (LiTDI), is particularly notable for its outstanding electrochemical stability, ease of synthesis, high solubility, and multifunctional roles as a charge carrier, additive, and moisture scavenger. Building upon the favorable properties of LiTDI and leveraging our expertise in dicyanoimidazole chemistry, we have synthesized a series of novel lithium salts featuring the 4,5-dicyanoimidazole core with diverse substituents at the imidazole C2 position. These structural modifications aim to enhance anion stabilization and finely tune the pKa of the parent 1H-imidazole framework. We will present how these substitutions influence solubility and electrochemical behavior, highlighting their potential as next-generation electrolyte materials.	dicyanoimidazole; solubility; electrochemical behavior; electrolyte