Summary:

The present invention relates to a diluted lithium-sulfur battery electrolyte mixed with lithium salt, which belongs to the technical field of lithium-sulfur battery. The electrolyte contains a solvent that mixes lithium salts, dissolves mixed lithium salts, and a diluent, preferably ester or ether solvent for solvent mixed lithium salts, and fluoroether compounds or aromatic compounds for diluents. This electrolyte can be used in high-performance lithium-sulfur batteries, and at the same time plays a role in stabilizing the lithium anode and promoting the capacity of the sulfur cathode. The electrolyte is mixed by adding different lithium salts in a certain proportion to achieve the dual effects of lithium anode protection and sulfur cathode capacity, and because of the addition of diluent, the electrolyte has high conductivity, low viscosity and good wettability, which greatly reduces the cost of the electrolyte, can be applied on a large scale, and has high commercial value.

Link: http://epub.cnipa.gov.cn/patent/CN110911756A