Ca-doped PrBa1-Ca CoCuO5+ (x = 0–0.2) as cathode materials for solid oxide fuel cells
Source abstract
Abstract
Abstract Ca-doped perovskite oxides PrBa1-xCaxCoCuO5+δ (PBCCCO, x = 0–0.2) were prepared and investigated as SOFC cathode materials. PBCCCO samples are single perovskite structure with P4/mmm space group. Pr, Cu and Co ions in PBCCCO samples exist in the form of Pr3+/Pr4+, Cu2+/Cu+ and Co3+/Co4+ multi-valence states. The average TECs of PBCCCO samples were reduced from 17.4 × 10−6 K−1 (x = 0) to 16.7 × 10−6 (x = 0.1) and 16.1 × 10−6 K−1 (x = 0.2) whin RT-900°С. The electrical conductivity and electrochemical catalytic activity of PBCCCO perovskites was enhanced obviously by Ca doping. The ASR values decreased by 60.1% (@650 °C), 68.9% (@700 °C), 71.0% (@750 °C) and 72.8% (@800 °C) respectively when Ca doping content increased from x = 0 to 0.2. These results suggest PBCCCO sample with Ca doing content x = 0.2 can be a promising cathode for IT-SOFC.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advancements in Solid Oxide Fuel Cells · Electronic and Structural Properties of Oxides · Magnetic and transport properties of perovskites and related materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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