公开(公告)号：US20240347728A1

公开(公告)日：2024-10-17

申请号：US18278659

申请日：2022-02-24

Applicant: FOCUS GRAPHITE INC. ,  GRAFOID INC.

Inventor： Joseph Eugene DONINGER ,  Michelle G. BARSUKOV ,  Igor V. BARSUKOV ,  Joseph Sathiya GNANARAJ ,  Michaelangelo MONTERROSO ,  Bruce Eckelberry WELLS

IPC: H01M4/587 ,  C01B32/225 ,  C01B33/021 ,  H01M4/02 ,  H01M4/36 ,  H01M4/38 ,  H01M4/62 ,  H01M10/0525

CPC classification number: H01M4/587 ,  C01B32/225 ,  C01B33/021 ,  H01M4/364 ,  H01M4/366 ,  H01M4/386 ,  H01M4/62 ,  H01M10/0525 ,  C01P2004/03 ,  C01P2004/32 ,  C01P2004/80 ,  C01P2006/40 ,  C01P2006/80 ,  H01M2004/027

Abstract: The present invention provides a spheroidization method for the manufacture of additive-enhanced spheroidal graphite particles, and their application as lithium-ion battery anode active materials. Particles are comprised of natural crystalline flake graphite in combination with additive such as silicon nanoparticles or synthetic graphite. Preferably, graphite and additive particles are rolled into spheres using the spheroidization process of the present invention, followed by surface coating with a layer of amorphous carbon. In addition, a lithium ion battery is described, containing additive-enhanced graphite embedded into an agile matrix of high structure carbon black loaded at optimum compositions as a negative electrode.