Direct deposition of graphene nanowalls on ceramic powders for the fabrication of a ceramic matrix composite
Zhou Hai-Tao1, Liu Da-Bo1, Luo Fei1, Tian Ye1, Chen Dong-Sheng1, Luo Bing-Wei1, †, Zhou Zhang2, Shen Cheng-Min2, ‡
       

(a) High-magnification SEM image showing abundant of stem- (solid arrows) and branch- (dashed arrows) structures. (b) TEM image of branches (labeled by arrows) on the stem. (c) HRTEM image at the edge of the stem, indicating the stem is terminated with two-layer graphene with an interlayer spacing of 0.37 nm. (d) HRTEM image at the branches, showing the branches are composed of various graphene layers with an average interlayer spacing of 1.87/5 = 0.374 nm.