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US 12,155,073 B2Granted
Method for preparing iron sulfide, cathode comprising iron sulfide prepared thereby for lithium secondary battery, and lithium secondary battery comprising same
AssigneeLG Energy Solution, Ltd.
InventorsSeongji Ye, Suenghoon Han
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Abstract
A method for preparing an iron sulfide (FeS2) with selective and high purity by a simple process, a positive electrode for a lithium secondary battery including the iron sulfide (FeS2) prepared therefrom, which can adsorb the lithium polysulfide produced during the charging and discharging process of the lithium secondary battery, thereby increasing the charging and discharging efficiency of the battery and improving its lifetime characteristics; and a lithium secondary battery provided with the same.
Claims14
A method for preparing an iron sulfide (FeS2) comprising the steps of:
- (1) mixing an iron precursor and a sulfur precursor to form a mixture;
- and
- (2) heat-treating the mixture in an inert gas atmosphere,
- wherein the iron precursor is γ-FeOOH, and
- wherein the iron sulfide (FeS2) is in a form of plate-shaped particles.
2 more elements
Dependencies are inferred from the claim text.