Lithium organic salts with extra functionalities

International audienceLithium perfluorosulfonate salts have been tailored either to provide solvating and/or plasticizing effect, or polar function. Adding these extra functionalities to the organic anion result in a good combination of ionic conductivity and cationic transference number. The high cationic conductivity obtained for polymer electrolytes at the concentration O/Li=30 must be emphasized

Lithium salts based on oligoether sulfate esters

International audienceSalts based on oligoether sulfate have been synthesized. Two families of lithium salt were synthesized, mono and disulfate. The results, in term of ionic conductivities, thermal behaviour, viscosity, transference number and electrochemical stability are reported. These salts have sufficient thermal and electrochemical stabilities and, in addition, they have a cationic transference number close to unity. The influence of alkaline cation was evaluated on conductivity and thermal stability measurements