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US 6,547,838 B1Granted
Sulfuric positive electrode for use in lithium secondary battery and method for manufacturing the same
AssigneeKorea Advanced Institute of Science and Technology
InventorsJai Young Lee, Hyo Jun Ahn, Sang Cheol Han, Young Soo Han, Sung Chul Park, Sang Min Lee
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Abstract
A sulfuric positive electrode for use in a lithium secondary battery whose life cycle is enhanced and a method for manufacturing the same are provided, in which nickel is added in sulfur that is an active material of a positive electrode. The sulfuric positive electrode manufactured by adding nickel that is an electrical conductor can solve the problem with respect to an electrode life cycle.
Claims9
A method for manufacturing a sulfuric positive electrode for use in a lithium secondary battery, the method comprising the steps of:
- weighing sulfuric powder that is an active material and carbon powder and nickel powder that are electrical conductors and then ball-milling and mixing the weighed powder under an inactive atmosphere;
- stirring the mixed powder that is put in a solvent together with polyethylene-oxide (PEO), to thereby form a slurry for a positive electrode;
- and
- drying the slurry to obtain a sulfuric positive electrode.
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Dependencies are inferred from the claim text.