Graphene-Enhanced cathode materials for lithium batteries
First Claim
1. A nano graphene-enhanced particulate for use as a lithium battery cathode active material, wherein said particulate is formed of a single or a plurality of graphene sheets and a plurality of fine cathode active material particles with a size smaller than 10 μ
- m, and the graphene sheets and the particles are mutually bonded or agglomerated into said particulate with a graphene sheet embracing said cathode active material particles, and wherein said particulate has an electrical conductivity no less than 10−
4 S/cm and said graphene is in an amount of from 0.01% to 30% by weight based on the total weight of graphene and the cathode active material combined.
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Abstract
A nano graphene-enhanced particulate for use as a lithium battery cathode active material, wherein the particulate is formed of a single or a plurality of graphene sheets and a plurality of fine cathode active material particles with a size smaller than 10 μm (preferably sub-micron or nano-scaled), and the graphene sheets and the particles are mutually bonded or agglomerated into an individual discrete particulate with at least a graphene sheet embracing the cathode active material particles, and wherein the particulate has an electrical conductivity no less than 10−4 S/cm and the graphene is in an amount of from 0.01% to 30% by weight based on the total weight of graphene and the cathode active material combined.
152 Citations
33 Claims
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1. A nano graphene-enhanced particulate for use as a lithium battery cathode active material, wherein said particulate is formed of a single or a plurality of graphene sheets and a plurality of fine cathode active material particles with a size smaller than 10 μ
- m, and the graphene sheets and the particles are mutually bonded or agglomerated into said particulate with a graphene sheet embracing said cathode active material particles, and wherein said particulate has an electrical conductivity no less than 10−
4 S/cm and said graphene is in an amount of from 0.01% to 30% by weight based on the total weight of graphene and the cathode active material combined. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
- m, and the graphene sheets and the particles are mutually bonded or agglomerated into said particulate with a graphene sheet embracing said cathode active material particles, and wherein said particulate has an electrical conductivity no less than 10−
Specification