CPC H01M 4/5815 (2013.01) [H01M 4/136 (2013.01); H01M 10/052 (2013.01); H01M 10/0569 (2013.01); H01M 2004/027 (2013.01); H01M 2004/028 (2013.01); H01M 2300/0028 (2013.01)] | 7 Claims |
1. A lithium-sulfur secondary battery comprising a positive electrode, a negative electrode, a separator, and an electrolyte solution, wherein the positive electrode has an SC factor value of 0.45 or more represented by Equation 1 below:
![]() wherein P is the porosity (%) of the positive electrode active material layer in the positive electrode, L is the mass of sulfur (mg/cm2) per unit area of the positive electrode active material layer in the positive electrode, and α is 10 (constant),
wherein the electrolyte solution comprises a first solvent, a second solvent, and a lithium salt,
wherein the first solvent is selected from the group consisting of propionitrile, dimethylacetamide, dimethylformamide, triethylamine, 1-iodopropane, and or combinations thereof, and
wherein the second solvent is a fluorinated ether-based solvent.
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