Invention Grant
- Patent Title: Method of producing multi-level graphene-protected cathode active material particles for battery applications
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Application No.: US15996183Application Date: 2018-06-01
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Publication No.: US10559815B2Publication Date: 2020-02-11
- Inventor: Aruna Zhamu , Jun Yin , Jen-Hsien Yang , Yu-Sheng Su , Bor Z. Jang
- Applicant: Nanotek Instruments, Inc.
- Applicant Address: US OH Dayton
- Assignee: Global Graphene Group, Inc.
- Current Assignee: Global Graphene Group, Inc.
- Current Assignee Address: US OH Dayton
- Main IPC: H01M4/02
- IPC: H01M4/02 ; H01M4/1393 ; H01M10/0525 ; H01M4/583 ; H01M4/36 ; C01B32/184

Abstract:
Provided is graphene-embraced particulate for use as a lithium-ion battery anode active material, wherein the particulate comprises primary particle(s) of an anode active material and multiple sheets of a first graphene material overlapped together to embrace or encapsulate the primary particle(s) and wherein a single or a plurality of graphene-encapsulated primary particles, along with an optional conductive additive, are further embraced or encapsulated by multiple sheets of a second graphene material, wherein the first graphene and the second graphene material is each in an amount from 0.01% to 20% by weight and the optional conductive additive is in an amount from 0% to 50% by weight, all based on the total weight of the particulate. Also provided are an anode and a battery comprising multiple graphene-embraced particulates.
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