Invention Grant
- Patent Title: Graphene-enhanced anode particulates for lithium ion batteries
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Application No.: US15403759Application Date: 2017-01-11
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Publication No.: US10559811B2Publication Date: 2020-02-11
- Inventor: Aruna Zhamu , Jinjun Shi , Guorong Chen , Qing Fang , Bor Z. Jang
- Applicant: SAMSUNG ELECTRONICS CO., LTD.
- Applicant Address: KR Gyeonggi-Do
- Assignee: SAMSUNG ELECTRONICS CO., LTD.
- Current Assignee: SAMSUNG ELECTRONICS CO., LTD.
- Current Assignee Address: KR Gyeonggi-Do
- Agency: Cantor Colburn LLP
- Main IPC: H01M4/133
- IPC: H01M4/133 ; H01M4/131 ; H01M4/52 ; H01M4/48 ; H01M4/38 ; H01M4/587 ; H01M10/0525 ; H01B1/04 ; B82Y30/00 ; H01M4/04 ; H01M4/13 ; H01M4/139 ; H01M4/62 ; H01M4/58

Abstract:
A nano graphene-enhanced particulate for use as a lithium-ion battery anode active material, wherein the particulate is formed of a single sheet of graphene or a plurality of graphene sheets and a plurality of fine anode active material particles with a size smaller than 10 μm. The graphene sheets and the particles are mutually bonded or agglomerated into the particulate with at least a graphene sheet embracing the anode active material particles. The amount of graphene is at least 0.01% by weight and the amount of the anode active material is at least 0.1% by weight, all based on the total weight of the particulate. A lithium-ion battery having an anode containing these graphene-enhanced particulates exhibits a stable charge and discharge cycling response, a high specific capacity per unit mass, a high first-cycle efficiency, a high capacity per electrode volume, and a long cycle life.
Public/Granted literature
- US20170200938A1 GRAPHENE-ENHANCED ANODE PARTICULATES FOR LITHIUM ION BATTERIES Public/Granted day:2017-07-13
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