Method of exploiting particle morphology to optimize granular structure and charge/discharge performance of lithium ion battery cathodes
AssigneePurdue Research Foundation
InventorsKyle C. Smith, Timothy S. Fisher
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Abstract
A method is provided for forming a high-capacity, high-rate lithium ion battery cathode material. The method includes providing a synthesized material of electrochemically active plate-shaped nanoparticles and adding a plurality of appropriately sized diluent particles to the plate-shaped nanoparticles to form a suspension. Any liquid is removed from the solution to form a composite material. The method also includes processing the composite material to form a high-capacity, high-rate lithium ion battery cathode material.
Claims8
A method of forming a high-capacity, high-rate lithium ion battery cathode material, comprising:
- A) providing a plurality of synthesized electrochemically active plate-shaped nanoparticles;
- B) adding a plurality of appropriately sized diluent particles to the electrochemically active plate-shaped nanoparticles to form a mixed suspension;
- C) removing any liquid from the suspension to form a composite material, thereby introducing steric defects between the electrochemically active plate-shaped nanoparticles;
- and
- D) processing the composite material to form a high-capacity, high-rate lithium ion battery cathode material, wherein the processing step comprises:
- curing the composite material, and densifying the composite material, and the densifying step comprises further introducing steric defects between the electrochemically active plate-shaped nanoparticles by passing the composite material through a roll press,
- said composite material having column heights limited to twice the thickness of the electrochemically active plate-shaped nanoparticles in the [010] direction.
Dependencies are inferred from the claim text.