Fig. 4: Electrocatalytic OER performance of Zn-doped Co3O4. | NPG Asia Materials

Fig. 4: Electrocatalytic OER performance of Zn-doped Co3O4.

From: Regulating the pore structure and oxygen vacancies of cobaltosic oxide hollow dodecahedra for an enhanced oxygen evolution reaction

Fig. 4

A LSV curves of all catalysts in 1 M KOH at a scan rate of 5 mVs−1; B linear plot of the capacitive current density vs. scan rate for all catalysts, and the double-layer capacitance (CDL) is determined by the slope of the fitting line; C AC impedance spectra of the (a) Co3O4 nanoparticles, (b) Co3O4 dodecahedra, and (c) Zn-doped Co3O4−2 at 1.6V (vs RHE); and D chronopotentiometry measurements of the (a) Co3O4 nanoparticles, (b) Co3O4 dodecahedra, and (c) Zn-doped Co3O4−2 at a current density of 10 mAcm−2 for 4 h in 1 M KOH.

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