Manufacturing methods for composites, fuel cell separators, fuel cell cells, and fuel cell stacks, and composites.

摘要

PROBLEM TO BE SOLVED: To provide a composite material capable of maintaining a low contact resistance and a separator for a fuel cell. SOLUTION: The composite material includes a plate-shaped base material made of metal and a carbonaceous layer formed on at least one of the main surfaces of the base material, and has a wavelength of 532 nm for the carbonaceous layer. In the Raman spectrum obtained by Raman spectroscopic analysis using a laser as an excitation source, the ID / IG value is 2.5 to 4.5, and the ID "/ IG value is 1.8 to 2.5. Composite material. However, ID is the intensity of the peak at which the maximum value appears in the wave number region of 1300 to 1400 cm-1, and ID "is the intensity of the peak at which the maximum value appears in the wave number region of 1450 to 1570 cm-1. IG is the intensity of the peak at which the maximum value appears in the wave number region of 1580 to 1620 cm-1. [Selection diagram] Fig. 1