▎ 摘　　要

NOVELTY - Electrolyte comprises a lithium salt and a solvent, where the solvent comprises a chain ether solvent and a cyclic ether solvent, and the concentration of the lithium salt in the electrolyte is 0.01-0.5 mol/l. USE - Electrolyte for lithium sulfur battery (claimed), which is useful as an electrochemical energy storage device, and as a rechargeable battery. ADVANTAGE - The electrolyte can effectively inhibit the shuttle effect of lithium sulfur battery, reduce the loss of the sulphur active substance, improve the stability and capacity retention rate of the lithium sulfur battery, and has good wetting property. It can form stable CEI/SEI layer on the positive and negative surface respectively improving lithium sulfur performance, and can effectively improve the reaction dynamics of lithium sulphur battery at low temperature, expand the application temperature. It also can reduce the lithium salt adding amount in the lithium sour battery electrolyte, so as to reduce the production cost. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a lithium sulphur battery, which comprises a cathode, an anode, a diaphragm and the electrolyte for the new lithium sulphur battery, where the cathode material is lithium metal the anode is anode active material conductive agent bonding agent and solvent composed of solvent.