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Figure 1

From: Longitudinal Hierarchy Co3O4 Mesocrystals with High-dense Exposure Facets and Anisotropic Interfaces for Direct-Ethanol Fuel Cells

Figure 1

(A,B) Schematic of the one-pot hydrothermal synthesis of electrode fabrics using hierarchical Co3O4 nanocrystals formed under the controlled engineering of surface morphologies along the longitudinal scales of corn-pellets (CPs) (A-a) and banana-clusters (BCs) (A-b) in nanorod dominates and nanolayered stacking-sheets (B-a) and multiple cantilevered sheet- (MCS) (B-b) based surface morphologies. The counterparts of C-NTs and graphene (g-C) were used as conducting supports. The C-NTs were employed to fabricate C-NTs/C3O4 CPs, C-NTs/C3O4 BCs and C-NTs/C3O4 MCSs, whereas graphene was used to synthesize g-C/C3O4 mesocrystals. The CP- and BC-NR cylindrical roller sizes vary from the sub-nanometer scale to over a few nanometers, depending on the dose of urea added to the synthetic composition and the number of the construction block units along and around the C-axis (A-a,A-b).

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