Enhanced ORR activity of A-site deficiency engineered BaCo0·4Fe0·4Zr0·1Y0·1O3-δ cathode in practical YSZ fuel cells

Enhanced Electrochemical Performance and Durability of the BaCo0.4Fe0.4Zr0.1Y0.1O3−δ Composite Cathode of Protonic Ceramic Fuel Cells via Forming Nickel Oxide Nanoparticles

“…The 0D configuration of NiO nanoparticles could enlarge the active sites for oxygen adsorption and dissociation without fading the BCFZY surface and TPB where H 2 O formation reactions (reaction (4) and (7)) occur, respectively. If NiO fully covers the surface of the cathode, the sluggish electron and proton transfer in the NiO film could penalize the ORR kinetics. , …”

High-Efficiency of Bi-Functional-Based Perovskite Nanocomposite for Oxygen Evolution and Oxygen Reduction Reaction: An Overview

“…The observed ORR catalytic currents follow the trend GBSCF > SBSCF > NBSCF > PBSCF > BSCF. Further, very recently, Wei et al developed the A-site deficient (Ba 2+ ) perovskites from BaCo0.4Fe0.4Zr0.1Y0.1O3-δ(BCFZY) using nitrate-citrate complexing and the self-combustion method [67]. The results showed that a 10% A-site deficiency in BCFZY cathode dramatically reduced the area-specific resistance (ASR) from 0.73 Ω.cm 2 to 0.13 Ω.cm 2 at 650 °C in air.…”

“…It was concluded that the A-site Ba 2+ deficiency generated the oxygen vacancies in the lattice structure, which would accelerate the surface exchange and bulk diffusion of oxygen and subsequently improving the ORR catalytic activity. Overall, it is interesting that a proper deficiency in A-site cation could contribute to high effectiveness in (b) Further, very recently, Wei et al developed the A-site deficient (Ba 2+ ) perovskites from BaCo 0.4 Fe 0.4 Zr 0.1 Y 0.1 O 3−δ (BCFZY) using nitrate-citrate complexing and the selfcombustion method [67]. The results showed that a 10% A-site deficiency in BCFZY cathode dramatically reduced the area-specific resistance (ASR) from 0.73 Ω•cm 2 to 0.13 Ω•cm 2 at 650 • C in air.…”

Highly conductive hematite electrolyte for low‐temperature solid oxide fuel cell

“…Yttrium stabilized zirconia is one of the common electrolytes. [11][12][13] But its ionic conductivity is too low to meet the requirement of ionic conductivity at low temperatures. As for fluorite structural electrolytes, the oxygen ion conductivity of the CeO 2 -based electrolyte is several times higher than that of the ZrO 2 -based electrolyte.…”

“…However, these electrolytes are expensive to prepare and possess low oxygen ion conductivity at low temperatures (450‐600°C). Yttrium stabilized zirconia is one of the common electrolytes 11‐13 . But its ionic conductivity is too low to meet the requirement of ionic conductivity at low temperatures.…”