• 专利标题:   Graphene-based porous composite used in electrode active material comprises graphene; and a structure former contacting the grapheme, and is a metal oxide or a carbon compound and comprises pores in it.
  • 专利号:   US2014183415-A1, KR2014087638-A, KR2014110427-A, KR2014119427-A, KR1549732-B1, KR1585294-B1
  • 发明人:   SONG L H
  • 专利权人:   CHEIL IND INC, CHEIL IND INC
  • 国际专利分类:   B01J021/18, H01G011/32, H01M004/36, B82B001/00, B82B003/00, C01B031/02, B01J006/00, H01M004/133
  • 专利详细信息:   US2014183415-A1 03 Jul 2014 H01G-011/32 201453 Pages: 19 English
  • 申请详细信息:   US2014183415-A1 US108716 17 Dec 2013
  • 优先权号:   KR158157, KR024716, KR035042

▎ 摘  要

NOVELTY - A graphene-based composite comprises: graphene; and a structure former contacting the graphene. The structure former is a metal oxide or a carbon compound and comprises pores in it. The graphene-based composite has a porous particle structure. USE - As a graphene-based composite which is used in a catalyst carrier or an electrode active material (claimed). ADVANTAGE - The graphene-based composite is a spherical particle having an average diameter of 100-10000 nm, a specific surface area of 300-1500 m2/g, and a capacitance of 150-400 F/g. The graphene-based composite capable of maximizing effects of material transfer and heat transfer, which are required when a graphene-based composite is applied to electrodes and catalyst carriers, while maintaining inherent properties of graphene such as conductivity. Particularly the present graphene-based composite, secures both an ion transfer path and an electrical conduction path, have a large specific surface area and a capacitance (charge storage capacity) of greater than or equal to 150 F/g, and prevent a problem of stacking graphene. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) preparing (p1) a graphene-based composite involving either: preparing a precursor solution by placing and dispersing graphene oxide and a pore agent in a solvent, followed by mixing the precursor solution with a metal oxide precursor, and performing spraying and heat treatment of the precursor solution to form a graphene-based composite; or mixing graphene, a carbon precursor, a metal oxide precursor, a pore agent and a solvent, followed by heat treatment, and removing a metal oxide from the graphene-carbon-metal oxide composite; and (2) a catalyst carrier or an electrode active material comprising the graphene-based composite.