Electrochemical performance of spin coated dense BaZr0.80Y0.16Zn0.04O3-δ membranes

Tailoring the Cathode–Electrolyte Interface with Nanoparticles for Boosting the Solid Oxide Fuel Cell Performance of Chemically Stable Proton‐Conducting Electrolytes

“…The cell performance was very encouraging and reached a record‐high level for the BaZrO 3 ‐based cells fabricated with ceramic processing techniques. The EIS measurements, as shown in Figure b, indicated that the R p value for this cell was 0.07 Ω cm 2 at 600 °C, which is a similar value to that obtained for using the nano‐sized SSC cathode, and significantly smaller than values reported for most of the cathode for proton‐conducting SOFCs, although the expected double perovskite PBCO phase was not formed. The EIS plots of both SSC impregnated and PBCO‐based impregnated cells were fitted with an equivalent circuit, which was made of two distributed elements, composed by a constant phase element in parallel with a resistance.…”

“…As the polarization resistance of Ni‐based anode is negligibly small compared with the cathode polarization in the fuel cell test, the R p mainly reflects the cathode performance . This R p value is significantly smaller than that reported for BZY cells in the relevant literature, using highly catalytic cathodes, such as Ba 0.5 Sr 0.5 Co 0.8 Fe 0.2 O 3‐ δ , La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3‐ δ , and Pt . This finding suggests that the desirable cathode architecture achieved in this study, with a remarkable extension of the TPB density for the cathode area, results in small electrode polarization resistance, boosting the fuel cell performance for BZY‐based cells at low operating temperature.…”

Fabrication and Performance of Tubular, Electrode‐Supported BaCe0.2Zr0.7Y0.1O3–δ Fuel Cells

“…This result implies that the relative role of hole conduction is decreased under highly reducing conditions at the anode. The thin electrolyte used in these cells appears to result in an internal short that is greater than observed by past researchers, yielding an overall lower ionic transference number [23,24].…”

“…However, the result is limited to quantification of an integrated transference number, that is the sum of the transference numbers of the multiple charge carriers. Performance of protonic-ceramic fuel cells has steadily improved as new materials and fabrication methods have been developed (Table 1 [ [23][24][25][26][27][28][29][30][31]). Previous work on protonic ceramics has been almost-exclusively on button-cell devices.…”

Fabrication of yttrium-doped barium zirconate thin films with sub-micrometer thickness by a sol–gel spin coating method

“…The most common fabrication methods are powderbased sintering, such as co-pressing [10,11] and slurry coating [12][13][14], but these techniques still require high sintering temperatures up to 1400°C even by using sintering aids, and the resulted films produced are generally thicker than 10 μm to obtain pinhole-free and gas-tight electrolyte. Vacuum-based deposition techniques, such as pulsed laser deposition [15,16], atomic layer deposition [17,18], and co-sputtering [19] have been demonstrated to produce dense and high quality films in sub-micrometer to tens of nanometer scales.…”