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Figure 5
(a) SEM image of the electrodeposited CoOx-Pi catalyst film electrochemically deposited onto the ITO/GCA electrode support. (b) SEM expanded view showing uniform CoOx-Pi `tubes' removed from the templating electrode pores. (c) Optical micrograph of the ITO/GCA electrode assembly supporting the electrochemically deposited CoOx-Pi thin-film catalyst, split in half, exposing the interior transverse pores. (d) EDX plot acquired at 12 kV. Carbon, oxygen, phosphorous and potassium originated from Kα. Co at 6.929 keV and at 0.776 keV originated from Kα and Kβ, respectively.

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