Fig. 6 Emerging structures with 3D printed electrodes: (A) 3D printed electrodes with different shapes and optimal 3Dp-PNCE catalytic electrodes. (B) TEM images of the optimal 3Dp-PNCE. (C) Comparison of current densities on 3Dp-CE, 3Dp-NCE, and 3Dp-PNCE. (D) CO2RR stability test of 3Dp-PNCE at −0.7 V[21]. (E) Schematic of the complete electrochemical flow cell (left), gaseous CO2 reactants and target product C2H4 flow pattern (center), and surface morphology at the GDL/catalyst interface (right). (F) SEM image of H-PFPE. (G) Complete product distribution and total current density of H-Δ-PFPE-2.4 at 5 applied potentials[13]
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