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US 12,463,216 B2Granted
Sulfur-carbon composite and lithium secondary battery comprising same
AssigneeLG Energy Solution, Ltd.
InventorsBong Soo Kim, Kwonnam Sohn
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Abstract
A positive electrode containing a sulfur-carbon composite and a lithium secondary battery including the same are discussed. More specifically, a network-shaped coating layer including a conductive polymer on a surface of the sulfur-carbon composite, and thus the conductivity of the sulfur-carbon composite is enhanced and also, lithium ions move freely, and accordingly, when applied to lithium secondary batteries, the sulfur-carbon composite can enhance the performance of batteries.
Claims7
A positive electrode comprising a composite comprising:
- a plurality of sulfur-carbon composite particles having a surface;
- and
- a net-shaped electrically conductive polymer coating layer on the surface of the sulfur-carbon composite particles,
- wherein the net-shaped electrically conductive polymer coating layer is not formed on an entire surface of the sulfur-carbon composite particles, and wherein a part of the surface of the sulfur carbon composite is exposed,
- wherein the net-shaped electrically conductive polymer coating layer comprises nanofibers,
- wherein a diameter of the nanofibers is from 10 nm to 1 μm,
- wherein a content of the electrically conductive polymer is 0.1% by weight to 10% by weight based on a total weight of the sulfur-carbon composite, and
- wherein the electrically conductive polymer comprises polyaniline.
5 more elements
Dependencies are inferred from the claim text.