Fig. 4From: Reducing and Uniforming the Co3 O 4 Particle Size by Sulfonated Graphenal Polymers for Electrochemical Applications a The Co3O4/SGP nanoparticles grown in NH3 solutions were agglomerations of 2D nanoplatelets. b The Co3O4 nanoplatelets had a lateral dimension of 25–30 nm. c EDS characterization showed that the Co3O4 nanoparticles were tightly wrapped by SGP. d After blending, the Co3O4 nanoplatelets had an intimate contact with MWCNTs, labeled by arrows Back to article page