US 7,585,434 B2
	Carbonaceous material for forming electrically conductive material and use thereof
Toshio Morita, Kanagawa (Japan); Ryuji Yamamoto, Kanagawa (Japan); and Masaharu Toki, Tokyo (Japan)
Assigned to Showa Denko K.K., Tokyo (Japan)
Appl. No. 10/540,560 PCT Filed Dec. 25, 2003, PCT No. PCT/JP03/16771 § 371(c)(1), (2), (4) Date Jun. 24, 2005, PCT Pub. No. WO2004/059663, PCT Pub. Date Jul. 15, 2004.
Claims priority of provisional application 60/436631, filed on Dec. 30, 2002.
Claims priority of application No. 2002-376060 (JP), filed on Dec. 26, 2002.
Prior Publication US 2006/0035081 A1, Feb. 16, 2006
Int. Cl. H01B 1/04 (2006.01); B32B 9/00 (2006.01); H01M 10/24 (2006.01)

U.S. Cl. 252—502  [252/500; 252/511; 252/182.1; 428/366; 428/367; 428/376; 423/447.1; 423/447.3; 423/449.4; 429/231.8; 524/495; 524/496]

20 Claims

1. A carbonaceous material for forming an electrically conductive composition, comprising a vapor grown carbon fiber, each fiber filament of the carbon fiber containing a hollow space along the filament in its interior and having a multi-layer structure, an outer diameter of 2 to 500 nm and an aspect ratio of 10 to 15,000, graphitic particles that contain boron and amorphous carbon particles, wherein the amount of the vapor grown carbon fiber is 10 to 90 mass %, the amount of the graphitic particles is 3 to 65 mass %, and the amount of the amorphous carbon particles is 7 to 35 mass %.