Lithium-sulfur battery electrode material, electrode, and lithium-sulfur battery including the same
AssigneeResearch & Business Foundation Sungkyunkwan University
InventorsWon Il KIM, Yoonbin KIM, Ho Seok PARK, Jun Su KIM, Jeongyeon LEE
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Abstract
According to an embodiment of the present invention, the performance of a positive electrode host material for a lithium-sulfur battery can be optimized to solve the problems of low conductivity of sulfur as an energy storage material and volume expansion during charge and discharge, and as a negative electrode material, a transition metal phthalocyanine polymer can be coated on the surface of a carbon fiber current collector through polymerization, solving the low lithium ion affinity of the carbon fiber current collector.
Claims18
A positive electrode material comprising a polymer including a repeating unit represented by the following Formula 1 and a carbon compound:
- Wherein the n is an integer from 2 to 1000, and the k is an integer from 1 to 5.
A negative electrode material comprising a repeating unit represented by the following Formula 4:
- in the Formula 4, the n is an integer from 2 to 1000, the m is an integer from 2 to 10, and the M is a transition metal.
A current collector coating method comprising the steps of:
- synthesizing a dimer represented by the following Formula 5;
- producing a negative electrode material represented by the following Formula 4 by polymerizing the dimer with an organic compound including a transition metal;
- and
- coating the negative electrode material on a current collector.
- in the Formula 4, the n is an integer from 2 to 1000, the m is an integer from 2 to 10, and the M is a transition metal,
- in Formula 5, the m is an integer from 2 to 10.
Dependencies are inferred from the claim text.