Figure 5
From: Two Sprayer CVD Synthesis of Nitrogen-doped Carbon Sponge-type Nanomaterials

HRTEM images of the samples synthesized at 1020 °C and grown for 40 min. The sample was obtained from zone S4. (a) Typical samples found in the N-CSTN materials, which consist of N-MWCNTs with a high graphitization surrounded by graphite layers with a poor graphitization (coaxial-like carbon fibers). (b) Image showing the innermost layers. (c) Image showing the outermost layers. (d) Image showing the interlayer distance between the carbon layers.