Fig. 5: Electrochemical performances of NAUP-PNC73 full cells in both fuel-cell and electrolysis modes as compared to full cells with conventional powder-packed electrodes.
a I-V-P curves of the cell with a conventional powder-packed PNC73 electrode measured at 400–600 °C. b I-V-P curves of a representative NAUP-PNC73 cell at 400–600 °C. c Polarization curves of a powder-packed PNC73 cell in electrolysis mode at 400–600 °C. H2 (20 sccm) and 20 vol.% H2O + 80 vol.% O2 (40 sccm) was fed to the electrode. The applied voltage for all tests ranged from 1.60 V to OCV. d Polarization curves of a NAUP-PNC73 cell in electrolysis mode at 400–600 °C. e Comparison of electrolysis performance of NAUP-PNC73 in terms of different vol.% H2O in O2 at the flow rate of 40 sccm and 600 °C. f Comparison of electrolysis performance of NAUP-PNC73 in terms of different flow rate of O2 at 600 °C. All tests conducted were under the same relative humidity of O2, which was 20 vol.% H2O in O2. Source data for Fig. 5 are provided as a Source Data file.
