Skip to main content
. 2021 Sep 29;11:19382. doi: 10.1038/s41598-021-98987-6

Figure 3.

Figure 3

Electrochemical properties of NiO-BCZYZn05|BCZYZn05|BSCF-BCZYZn05 single cells. (a) Electrochemical impedance spectra collected at 500–700 °C in 50 °C intervals. (b) Fitted Nyquist impedance plot at 600 °C, which shows two semicircles; the equivalent circuit is shown in the insert. (c) I–V and power-density curves of the BCZYZn05-based fuel cell using humidified H2 (3% H2O) as the fuel and ambient air as the oxidant for the cathode at 500–700℃. (d) Comparison of power density and thickness of 4 similar proton conducting cells with the cell under study. The cells, electrolyte fabrication process and measured temperatures were as follows: 1. NiO-BCZYZn05|BCZYZn05|BSCF-BCZYZn05, drop coating, 650 °C (present study), 2. NiO-BCZY712|BCZY712|LSF-BCZY712, co-pressing, 650 °C41, 3. NiO-BZCYZn04|BZCYZn04|SSC-BZCYZn04, co-pressing, 600 °C42, 4. NiO-BZCYZn04|BZCYZn04|PBC-BZCYZn04, co-pressing, 600 °C43, 5. NiO-BZCYZn04|BZCYZn04|LSCF-BZCYZn04, tape casting, 600 °C44.