▎ 摘 要
NOVELTY - A graphene-carbon nanotube composite comprises carbon nanotubes, a polymer layer containing an amine group, provided on the carbon nanotubes, and graphene provided on the polymer layer. USE - Graphene-carbon nanotube composite is used in catalyst for membrane electrode assembly for electrochemical cell (all claimed). DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) membrane electrode assembly; and (2) manufacture of the composite.