ELECTROLYTE COMPRISING PHOSPHITE AS AN ADDITIVE OR CO-SOLVENT, LITHIUM SECONDARY BATTERY COMPRISING THE ELECTROLYTE, AND METHOD OF MANUFACTURING SAID PHOSPHITE

• Main Authors: WÖLKE, CHRISTIAN, RÖSCHENTHALER, GERD-VOLKER, KOZEL, VOLODYMYR, STUBBMANN-KAZAKOVA, OLESYA, CEKIC-LASKOVIC, ISIDORA, VON ASPERN, NATASCHA, WINTER, MARTIN
• Format: Patent
• Language: English; Polish
• Published: 09.01.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

An electrolyte includes at least one lithium salt, at least one first organic solvent having a dielectric constant of >90 at 40° C., at least one second organic solvent having a boiling point of <110° C., and at least one phosphite having the formula (I)R1 is selected from an n-propoxy group, an iso-propoxy group, a tert-butoxy group, an n-pentafluoropropoxy group, an n-trifluoropropoxy group, an iso-hexafluoropropoxy group, or a tert-nonafluorobutoxy group. R2, R3, R4, and R5 are each selected, independently of one another, from H, a trifluoromethyl group, or a C2-C6-alkyl group which is substituted with a trifluoromethyl group.