Fig. 7: Comparison of electrochemical performance and microstructure of anode-supported cells.
From: Nanoengineering of cathode layers for solid oxide fuel cells to achieve superior power densities
a Current–voltage (I–V) and current–power (I–P) curves evaluated at various temperatures (700 °C: blue circles, 650 °C: red triangles, 600 °C: green squares) of the anode-supported cells utilizing nanoengineered cathode layers comprised of nanoporous LSC and LSCF-GDC nanocomposite (Sample 8 configuration, see Supplementary Table 1) and tested using different current collectors. LSC paste was utilized for the cell on the left-hand side, whereas Pt paste was used for the one on the right-hand side. The current load is limited to 3 A/cm2. The performance at 700 °C for the cell tested with LSC paste is inferior compared to the one where Pt paste was used; however, their performances are comparable at lower temperatures (650 and 600 °C). These results suggest that the material used for the current collection is an important consideration when evaluating the electrochemical performance. The active electrode area for both cells is 0.785 cm2. c, d Corresponding impedance spectra at OCV and various temperatures. e, f Representative cross-sectional SEM images showing the cells after testing using LSC paste (e) and Pt paste (f) as current collectors.
