- Patent Title: Composite conductive material having excellent dispersibility, slurry for forming lithium secondary battery electrode using the same, and lithium secondary battery
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Application No.: US16332611Application Date: 2018-06-08
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Publication No.: US10902968B2Publication Date: 2021-01-26
- Inventor: Tea Gon Kim , Je Young Kim , Hak Yoon Kim , Ki Won Sung , Ye Lin Kim , Joo Yul Baek , Jung Keun Yoo , Jun Muk Lim , Seul Ki Kim
- Applicant: LG Chem, Ltd.
- Applicant Address: KR Seoul
- Assignee: LG Chem, Ltd.
- Current Assignee: LG Chem, Ltd.
- Current Assignee Address: KR Seoul
- Agency: Lerner, David, Littenberg, Krumholz & Mentlik, LLP
- Priority: KR10-2017-0071506 20170608
- International Application: PCT/KR2018/006517 WO 20180608
- International Announcement: WO2018/226063 WO 20181213
- Main IPC: H01B1/04
- IPC: H01B1/04 ; H01M4/13 ; H01M4/36 ; H01M4/583 ; B82Y30/00 ; C01B32/15 ; B01J23/75 ; B01J37/02 ; B01J37/08 ; H01M4/62 ; H01M10/0525

Abstract:
The present invention provides a composite conductive material having excellent dispersibility and a method for producing the same. In an embodiment, the method includes supporting a catalyst on surfaces of carbon particles; heat treating the catalyst in a helium or hydrogen atmosphere such that the catalyst penetrate the surfaces of the carbon particles and are impregnated beneath the surfaces of the carbon particles at a contact point between the carbon particles and the impregnated catalyst; and heating the carbon particles having the impregnated catalyst disposed therein in the presence of a source gas to grow carbon nanofibers from the impregnated catalyst to form a composite conductive material, wherein the source gas contains a carbon source, and wherein the carbon nanofibers extend from the contact point to above the surfaces of the carbon particles.
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