A novel in situ Pr diffusion strategy based on a Sm 0.2 Ce 0.8 O 2−δ –Pr(Pr 0.5 Ba 1.5 )Cu 3 O 7−δ (3 : 7 wt%) compound is developed to achieve a perovskite-related proton-blocking composite cathode Ce 1−x Pr x O 2−δ –Ba 2 CeCu 3 O 7.4 –Sm 2 Ba 1.33 Ce 0.67 Cu 3 O 9 –CuO for BaZr 0.1 Ce 0.7 Y 0.2 O 3−δ -based proton-conducting SOFCs.
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Hou et al. (2018) studied this question.
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