Electrical, thermal, and H2O and CO2 poisoning behaviors of PrNi0.5Co0.5O3-δ electrode for intermediate temperature protonic ceramic electrochemical cells

BaCo0.4Fe0.4Zr0.1Y0.1O3−σ Cathode Performance for Proton Conducting Solid Oxide Fuel Cells with BaZr0.8−xCexY0.1Yb0.1O3−δ Electrolytes

“…7 and 8d), similar observation has been made by other researcher 1 as well as for other cathodes such as LSCF and BSCF, 15 though most are not triple conducting cathodes and the electrolyte used were mostly Ce-rich BZCYYb electrolyte. 19,25 One earlier explanation is that moisture addition to air might lead to strong adsorption of H 2 O on the cathode (and electrolyte) surface, which blocks ORR reaction site. However, the triple conducting nature of the BCFZY cathode means the entire cathode surface would be active for ORR and a low percentage of moisture is not expected to impact much.…”

“…1 The interactions of BCFZY cathode with the three representative BZCYYb electrolytes (i.e., Ce-rich, Zr-rich, ZrCe-bal) are studied using XRD and EDS. The 19 The metal salts contain Ba(NO 3 ) 2 (♯A11305, Alfa Aesar, 99%), ZrO(NO 3 )•12H 2 O (♯43224, Alfa Aesar, 99.9%), Ce(NO 3 ) 3 •6H 2 O (♯11329, Alfa Aesar, 99.5%), Y(NO 3 ) 3 •6H 2 O (♯12898, Alfa Aesar, 99.9%), Yb(NO 3 ) 3 •6H 2 O (♯12901,Alfa Aesar,99.9%), Co(NO 3 ) 3 .6H 2 O (♯239267,Sigma Aldrich,>= 98%), Fe(NO 3 ) 3 •9H 2 O (♯216828--500 G,Sigma Aldrich, >= 98%). After dissolving the metal salt in deionized (DI) water in a 2 l glass beaker according to the designed stoichiometric ratio, citric acid monohydrate (♯22869, Alfa Aesar, 99.5+%, Hygroscopic) and ethylene glycol (Alfa Aesar, A 17925) were added to the beaker with the molar ratio of total metal ion: citric acid: ethylene glycol of 1:1.5:1.5.…”

Fundamental Understanding and Applications of Protonic Y‐ and Yb‐Coped Ba(Ce,Zr)O3 Perovskites: State‐of‐the‐Art and Perspectives

“…Typical lattice parameters are: ≈6.17, 6.20, and 8.70 Å for an orthorhombically distorted BaCe 0.7 Zr 0.1 Y 0.1 Yb 0.1 O 3-𝛿 perovskite; [113,122,126] ≈4.33 Å [100] or ≈6.01, 6.10, and 8.67 Å [97] for cubic-type or orthorhombic-type BaCe 0.5 Zr 0.3 Y 0.1 Yb 0.1 O 3-𝛿 perovskites, respectively; and, finally, ≈4.31 Å for BaCe 0.4 Zr 0.4 Y 0.1 Yb 0.1 O 3-𝛿 . [38,131,132]…”

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

“…104 Sozal et al further explored the conductivity (∼360 S cm −1 at 600 °C) and TEC (∼17.6 × 10 −6 K −1 ) of PNC and demonstrated its excellent chemical stability to H 2 O and CO 2 . 105 Single perovskites, characterized by their simple cubic crystal structures and highly adaptable chemical compositions, stand as the most extensively investigated category within the realm of perovskite materials. Nevertheless, due to alterations in ionic radius ensuing from ion substitutions, structural distortions give rise to tetragonal, orthorhombic, rhombohedral congurations, among others.…”