Low thermal-expansion and high proton uptake for protonic ceramic fuel cell cathode

Catalytic Self‐Assembled Air Electrode for Highly Active and Durable Reversible Protonic Ceramic Electrochemical Cells

“…[ 23 ] Due to the supply of flowing air into the chamber of the BC1.5MN air electrode, the steam produced in the fuel cell mode may be taken away from the surface of the air electrode. [ 62 ] Therefore, the re‐fresh BC1.5MN air electrode may possess abundant oxygen vacancies for an enhanced ORR activity, leading to the distinct difference on voltage of the stable operation at the time of 480 h. There was also no obvious performance degradation during the next 600‐h test. In addition, the strong adhesion between electrolyte and electrode was observed after 1100‐h stability test in Figure S16 (Supporting Information), suggesting the great compatibility of BC1.5MN cathode with BZCYYb1711 electrolyte.…”

Tuning proton kinetics in BaCo0.4Fe0.4Zr0.2–XYXO3–δ triple ionic-electronic conductors via aliovalent substitution

“…In BCFZY0.1 and BCFY, the addition of water vapor decreased k O,chem across all temperatures, while D O,chem remains approximately the same, consistent with a previous study of BCFZY0.1, 60 and suggesting decreased ORR in humidified conditions, also observed in other materials. 61–63 In contrast, for BCFZ at temperatures ≤600 °C, the relaxation time decreased and k O,chem increased in humidified conditions, suggesting that water vapor improved the ORR at lower temperatures. Fig.…”

Exploring the potential of triple conducting perovskite cathodes for high-performance solid oxide fuel cells: a comprehensive review

“…The TEC of BSNCF is reduced to 11.9 × 10 −6 K −1 , while retaining excellent proton conductivity of 0.078 S cm −1 , and producing an excellent PPD of 977 mW cm −2 at 600 °C. 120 The TEC of PBF is lower than that of PrBC, but PBF's catalytic activity is inferior to that of PrBC. To improve the proton conductivity of PBF, PBKFZ was synthesized by introducing K and Zn dopants.…”