Ultralow-temperature electrolyte and application of battery with ultralow-temperature electrolyte

• Main Authors: FENG XINGANG, ZHANG JUNNAN, TAN SHUANGQIN, LI CHENGJIE, LIU GUANGJI, YANG AIMIN
• Format: Patent
• Language: Chinese; English
• Published: 29.12.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention relates to the technical field of electrochemistry, in particular to an ultralow-temperature electrolyte and application of a battery of the ultralow-temperature electrolyte, the ultralow-temperature electrolyte mainly comprises an organic solvent, an additive and a lithium salt, and the electrolyte comprises the following components in percentage by weight: 70-90% of the organic solvent, 10-20% of the lithium salt and 1.0-10% of the additive. The electrolyte has the beneficial effects that proper carbonic ester, carboxylic ester and ether solvents are selected and matched according to a certain proportion, so that the conductivity of the electrolyte is improved, the viscosity is reduced, the low-temperature activity is enhanced, and the low-temperature performance is improved at a low temperature; the lithium salt with high conductivity, hydrolysis resistance and high decomposition temperature is added, so that the conductivity of the electrolyte at low temperature is improved, and oxygenolysis