期刊论文

Liu, Peng;Kong, Jiangrong

英文

Ceramics International

0272-8842

2018

44

4

4516-4519

10.1016/j.ceramint.2017.12.034

Nanocrystalline BSCF and GDC materials were synthesized through a glycine-nitrate process (GNP). Moreover, the BSCF/GDC dual-gradient cathode was prepared via a spraying-sintering route, using corn starch as a pore-forming agent. The results show that a porous inner sub-layer can facilitate the expansion of the three-phase boundary of the cathode. However, the pore-forming agent content of each sub-layer should be adjusted while considering the gas transport and charge transfer.

本校为第一机构

Ba0.5Sr0.5Co0.8Fe0.2O3-δ(BSCF)/Gd0.2Ce0.8O1.9(GDC) dual-gradient cathodes for solid oxide fuel cells (SOFCs) were prepared via a spraying-sintering route, using corn starch as a pore-forming agent. The X-ray diffraction (XRD) analysis results revealed that the BSCF and GDC showed good chemical compatibility even at 1200 °C. The scanning electron microscopy (SEM) results indicated that a graded pore structure, in addition to a gradient composition, can be obtained by regulating the dosage of the pore-forming agent. Consequently, the dual-gradient cathode possessed a low polarization r...