Fig. 3From: Egg Albumin-Assisted Hydrothermal Synthesis of Co3O4 Quasi-Cubes as Superior Electrode Material for Supercapacitors with Excellent Performancesa SEM image and b, c TEM images of Co3O4 nanosheets obtained without any egg albumin, and the SEM images of the Co3O4 samples prepared with egg albumin of d 0.5, e 1, and f 5 mLBack to article page