Yousfi-Steiner et al. [10] proposed that after the hydrogen–oxygen is generated, the cell should be regarded as a generator in parallel with an electrolysis cell, rather than two original cells. As shown in Fig. 7, Cell 1 is equal to a generator that has current output,since its cathode and anode are respectively supplied with air and hydrogen. Meanwhile, Cell 2 could be regarded as an electrolysis cell, since both of its electrodes are supplied with air. By calculating the terminal voltage and potential for both devices, it was concluded that a sufficiently high potential would form in the cathode of Cell 2, causing corrosion of the catalyst carbon carrier and dissolution of Pt. Therefore, according to Kirchhoff’s voltage law, the potential of Cell 2′s cathode can become high enough to allow fast carbon and Pt corrosion. The theoretical calculation process of the generated high potential is shown in Fig. 8.
Yousfi-Steiner et al. [10] proposed that after the hydrogen–oxygen is generated, the cell should be regarded as a generator in parallel with an electrolysis cell, rather than two original cells. As shown in Fig. 7, Cell 1 is equal to a generator that has current output,since its cathode and anode are respectively supplied with air and hydrogen. Meanwhile, Cell 2 could be regarded as an electrolysis cell, since both of its electrodes are supplied with air. By calculating the terminal voltage and potential for both devices, it was concluded that a sufficiently high potential would form in the cathode of Cell 2, causing corrosion of the catalyst carbon carrier and dissolution of Pt. Therefore, according to Kirchhoff’s voltage law, the potential of Cell 2′s cathode can become high enough to allow fast carbon and Pt corrosion. The theoretical calculation process of the generated high potential is shown in Fig. 8.<br>
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