초록 ▼

Disclosed herein is a carbon product comprising at least two carbonaceous materials and one flexible graphite sheet interposed between said two carbonaceous materials, said two carbonaceous materials and said flexible graphite sheet having been joined together and integrated by calcination in an ine

Disclosed herein is a carbon product comprising at least two carbonaceous materials and one flexible graphite sheet interposed between said two carbonaceous materials, said two carbonaceous materials and said flexible graphite sheet having been joined together and integrated by calcination in an inert atmosphere as one carbon body, and the joining surface of at least one of said carbonaceous materials comprising both joining parts and non-joining parts which have an optional shape and are uniformly arranged on the joining surface, said carbon product as the electrode substrate of fuel cells, and a process for producing the same.

대표청구항 ▼

A carbon product comprising carbonaceous materials and flexible graphite sheets interposed between said carbonaceous materials, wherein (1) said carbonaceous materials and said flexible graphite sheet are joined together, (2) the thus joined materials have been integrated by calcination as a unitary

A carbon product comprising carbonaceous materials and flexible graphite sheets interposed between said carbonaceous materials, wherein (1) said carbonaceous materials and said flexible graphite sheet are joined together, (2) the thus joined materials have been integrated by calcination as a unitary carbon body in an inert atmosphere, (3) the joining surface of at least one of said carbonaceous materials comprises both joining parts and non-joining parts which have an optional shape and are uniformly arranged on the joining surface, (4) the ratio of the total area of said non-joining parts in said joining surface of said carbonaceous material to the total area of said joining surface is from 0.20 to 0.80, and (5) the value of the difference of the rate (%) of linear expansion and contraction at calcination between two said carbonaceous materials to be subjected to mutual joining via said flexible graphite sheet is not more than 3%.