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A 70 wt.% Sm0.5Sr0.5CoO3 – 30 wt.% Sm0.2Ce0.8O1.9 (SSC–SDC73) composite cathode was co‐synthesized by a facile one‐step sol–gel method, which showed lower polarization resistance and overpotential than those of physically mixed SSC–SDC73 cathode. The polarization resistance of co‐synthesized SSC–SDC73 cathode at 800 °C was as low as 0.03 Ω cm2 in air. Scanning electron microscopy (SEM) images showed...
In this study, Ca3Co4O9+δ (CCO) and La0.7Sr0.3CoO3 (LSC) have been mixed as mass fraction by 1:1, to prepare novel two‐phase composites with high electrical conductivity and low thermal expansion coefficient (TEC), for potential application in intermediate‐temperature solid oxide fuel cells. The conductivity of the composite, Ca3Co4O9+δ (50 wt.%) + La0.7Sr0.3CoO3 (50 wt.%) (CCO‐LSC50), is improved...
In this study, BaxSr1–xCo0.8Fe0.2O3–δ (BSCF) doped with trace of Gd were studied for phase structures and properties about thermal expansion, electrical conductivity, and electrocatalytic activity. The solution range of barium in BaxSr1–xCo0.8Fe0.2O3–δ can be extended to 0.1 ≤ x ≤ 0.7 after the introduction of small amount of Gd3+ ions (only for 5%) into the Ba/Sr‐site. The calculation results of...
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