Abstract: Cobalt-free double perovskite PrBa0.5Sr0.5Cu2O6-δ(PBSC) powders were prepared using a citric acid-nitrate gel combustion process and stu-dies were performed to investigate the possibility of PBSC working as cathode for proton-conducting solid oxide fuel cells (H-SOFCs). The chemical compatibility with proton conductor BaZr0.1Ce0.7Y0.2O3-δ (BZCY) and thermal matching between the single-phase cathode PBSC, composite cathode PBSC-BZCY and the electrolyte were investigated. Electrochemical properties of H-SOFCs with PBSC or PBSC-BZCY cathodes were studied. Results show that for H-SOFCs constructed with PBSC as cathode, BZCY as electrolyte and NiO-BZCY as anode support, the peak power density is 230 mW·cm-2 at 750 ℃, indicating that PBSC could be a candidate for cathode of H-SOFCs; while for single cell constructed with PBSC-BZCY as cathode, the peak power density is 669 mW·cm-2 at 750 ℃. The significant improvement on the performance of single cells with composite cathode should be mainly attributed to the large decrease in resistance resulted from the extended reaction area as the whole cathode for composite cathode cells comparing with that of PBSC/electrolyte interface for single phase cathode cells. The results indicate the good prospects for PBSC-BZCY composite cathode in H-SOFCs application.
1 Ding Z L, Yang Z J, Zhao D M, et al. Journal of Alloys and Compounds, 2013, 550, 204. 2 Bi L, Fabbri E, Sun Z Q, et al. Solid State Ionics,2011, 196(1), 59. 3 Fabbri E, Depifanio A, Dibartolomeo E, et al. Solid State Ionics, 2008, 179(15-16), 558. 4 Tao Z, Hou G, Zhang Q, et al. Fuel Cells, 2016, 16(2), 263. 5 Sun W P, Fang S M, Yan L T, et al. Journal of the Electrochemical So-ciety, 2011, 158(11), B1432. 6 Zhao F,Wang S W, Brinkman K, et al. Journal of Power Sources, 2010, 195(17), 5468. 7 Shao Q, Ge W J, Lu X Y, et al.Ceramics International, 2015, 41(5), 6687. 8 Sun W P, Yan L T, Lin B, et al. Journal of Power Sources, 2010, 195(10). 3155. 9 Yang Z J, Wang W B, Xiao J, et al. Journal of Power Sources, 2012, 204, 89. 10 Mao X B, Wang W B, Ma G L.Ceramics International, 2015, 41(8),10276. 11 Wang Z H, Liu M F, Sun W P, et al.Electrochemistry Communications, 2013, 27,19. 12 Meng X W. An investigation on the performance of cathode and electrolyte materials for intermediate-temperature solid oxide fuel cells. Ph.D. Thesis,Jilin University, China,2016 (in Chinese). 孟祥伟.中温固体氧化物燃料电池阴极和电解质材料的性能研究.博士学位论文,吉林大学,2016. 13 Sun W P, Zhu Z W, Jiang Y Z, et al. International Journal of Hydrogen Energy, 2011, 36(16), 9956. 14 He B B, Zhang L, Zhang Y X, et al. Journal of Power Sources, 2015, 287, 170. 15 Zhang X L, Qiu Y E, Jin F, et al. Journal of Power Sources, 2013, 241, 654. 16 Ling Y H, Yu J, Lin B, et al. Journal of Power Sources, 2011, 196(5), 2631. 17 Sun W P, Yan L T, Shi Z, et al. Journal of Power Sources, 2010, 195(15), 4727. 18 Chen X H, Tao Z T, Hou G H, et al. Electrochimica Acta, 2015, 165,142. 19 Zhu Z W, Tao Z T, Bi L, et al. Materials Research Bulletin, 2010, 45(11), 1771. 20 Wang S L, Feng Y, Wang D S.Ceramics International, 2014, 40(4), 6359. 21 Lu X Y, Chen Y H, Ding Y Z, et al. International Journal of Hydrogen Energy, 2012, 37(10),8630. 22 Tsipis E V, Kharton V V. Journal of Solid State Electrochemistry, 2011, 15(5),1007. 23 Zhu W X, Lü Z, Li S Y, et al. Journal of Alloys and Compounds, 2008, 465(1-2), 274. 24 Nian Q, Zhao L, He B B, et al. Journal of Alloys and Compounds, 2010, 492(1-2), 291.
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2019, Vol. 33 
