Anion Exchange Membrane Fuel Cells by Liang An & T.S. Zhao

Author:Liang An & T.S. Zhao
Language: eng
Format: epub
Publisher: Springer International Publishing, Cham

3.2 Metal-Oxide Catalysts

a. Co - Based Oxides

An assembly of Co3O4 nanowires supported on Ni-form has been utilized as the cathode of an Al/H2O2 fuel cell (Fig. 16) [41]. The Al anode was supplied 3.0 M KOH solution as anolyte, and the catholyte contained 3.0 M KOH and 0.2–1.0 M H2O2 to the Co3O4/Ni cathode [41]. Cell performance with 0.4 M H2O2 catholyte improved by increasing the operation temperature, where the peak power density was 85 mW cm−2 at room temperature increased to 137 mW cm−2 at 65 °C (Fig. 17) [41]. La0.6Ca0.4CoO3 prepared by calcination at 650 °C has been employed instead of Co3O4/Ni as the cathode in the Al/H2O2 fuel cell. The power density of the cell exceeded 200 mW cm−2 at room temperature (Fig. 18) [42].

Fig. 16 a A schematic representation of the Al/H2O2 fuel cell configuration b, c SEM images of the Co3O4/Ni cathode and d the TEM image of a single Co3O4 nanowire [41]

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