▎ 摘　　要

NOVELTY - Manufacturing large scale substrate free high purity graphene polyhedral structures at industrial scale cost effectively by utilizing chemical vapor deposition is claimed. USE - The process is useful for preparing hollow, porous, multi-wall carbon nanospheres or graphene polyhedral structures. ADVANTAGE - The process provides large scale substrate free high purity graphene polyhedral structures at industrial scale cost effectively with a narrow size distribution and an average particle size of 80 nm and an average aspect ratio close to 7:5.