Fig. 1From: Heavily Graphitic-Nitrogen Self-doped High-porosity Carbon for the Electrocatalysis of Oxygen Reduction Reaction a Raman spectra of KB900, KB-Z-900 and KB350Z-900. b Nitrogen adsorption-desorption isotherms and corresponding BJH pore-size distributions (inset) of KB-Z-900 and KB350Z-900. c Low-resolution and d high-resolution transmission electron microscopy images of KB350Z-900Back to article page