Invention Grant
- Patent Title: Graphite or carbon particulates for the lithium ion battery anode
- Patent Title (中): 用于锂离子电池阳极的石墨或碳颗粒
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Application No.: US12804413Application Date: 2010-07-22
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Publication No.: US09437344B2Publication Date: 2016-09-06
- Inventor: Aruna Zhamu , Jinjun Shi , Guorong Chen , Qing Fang , Bor Z. Jang , Ming C. Wang
- Applicant: Aruna Zhamu , Jinjun Shi , Guorong Chen , Qing Fang , Bor Z. Jang , Ming C. Wang
- Applicant Address: US OH Dayton
- Assignee: Nanotek Instruments, Inc.
- Current Assignee: Nanotek Instruments, Inc.
- Current Assignee Address: US OH Dayton
- Main IPC: B32B9/00
- IPC: B32B9/00 ; H01B1/12 ; C01B31/04 ; H01M4/133 ; H01M4/587 ; H01M10/0525

Abstract:
This invention provides a graphite or graphite-carbon particulate for use as a lithium secondary battery anode material having a high-rate capability. The particulate is formed of a core carbon or graphite particle and a plurality of satellite carbon or graphite particles that are each separately bonded to the core particle wherein the core particle is spherical in shape, slightly elongate in shape with a major axis-to-minor axis ratio less than 2, or fibril in shape, and wherein the satellite particles are disc-, platelet-, or flake-like particles each containing a graphite crystallite with a crystallographic c-axis dimension Lc and a lateral dimension. Preferably, Lc is less than 100 nm and the flake/platelet lateral dimension is less than 1 μm. The core particle may be selected from natural graphite, artificial graphite, spherical graphite, graphitic coke, meso-carbon micro-bead, soft carbon, hard carbon, graphitic fibril, carbon nano-fiber, carbon fiber, or graphite fiber. Preferably, the flat-shaped particles are randomly oriented with respect to one another.
Public/Granted literature
- US20120021294A1 Graphite or carbon particulates for the lithium ion battery anode Public/Granted day:2012-01-26
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