Fig. 1From: Reducing and Uniforming the Co3 O 4 Particle Size by Sulfonated Graphenal Polymers for Electrochemical Applications a, b SEM and AFM images of SGP nanosheets with insets showing the Raman spectrum and film thickness. c FTIR spectrum shows high fractions of −SO3H, −COOH, C=C, and −OH groups. d Optical images of a 20 wt% SGP dispersion (still a liquid) and 2 wt% GO dispersion (gel like)Back to article page