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引言 目前质子导体氧化物[1]电解质燃料电池的商(2)

2013-07-29 01:07
　　2.2.3 电导活化能
　　列出了BZCY10-Z-N 系列质子导体的电导活化能和指前因子。可以看出，随着NaCl含量增大，指前因子和活化能均减小，这说明添加无机盐可以降低材料的晶界势垒，有助于质子的迁移，促进质子快速传递。指前因子是一个与只由反应本性决定而与反应温度及系统中物质浓度无关的常数。
　　
　　3 结论
　　
　　1）添加10mol%NaCl 制备的BZCY10-Z-N10 复相质子导体材料具有较好的电导性能，800℃下其电导率比BZCY10 的电导率提高了近0.6 个数量级。
　　2）随着NaCl 含量增大，活化能减小，这说明添加无机盐可以降低材料的晶界势垒，有助于质子的迁移，促进质子快速传递。

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　　[参考文献] (References)
　　[1] ALBERTI G, CASCIOLA M. Solid state protonic conductors, present main applications and future prospects[J]. Solid State Ionics, 145(2001): 3~16
　　[2] NOWICK A S, DU Y. High-Temperature Protonic Conductors with Perovskite Related Structure [J]. SolidState Ionics, 1995, 77: 137~146
　　[3] IWAHARA H, ONO K. Proton Conduction in Sintered Oxides Based on BaCeO3 [J]. J. Electrochem. Soc.,1988, 135(2): 529~533
　　[4] LV J D, WANG L, FAN L H, et al. Chemical stability of doped BaCeO3-BaZrO3 solid solutions in differentatmospheres [J]. Journal of Rare Earths, 2012(26): 505~510
　　[5] RYU K H, HAILE S M. Chemical stability and proton conductivity of doped BaCeO3-BaZrO3 solid solutions[J]. Solid State Ionics, 1999(125): 355~367
　　[6] LV J D, WANG L, Lei D, et al. Sintering, chemical stability and electrical conductivity of the perovskiteproton conductors BaCe0.45Zr0.45M0.1O3?(M = In, Y, Gd, Sm) [J]. Journal of Alloys and Compounds, 2012, 467:376~382 内容来自www.nseac.com
　　[7] EMILIANA F, ALESSANDRA D E, et al. Tailoring the chemical stability of Ba(Ce0.8 xZrx)Y0.2O3 protonicconductors for Intermediate Temperature Solid Oxide Fuel Cells (IT-SOFCs) [J]. Solid State Ionics, 2012,179(15~16): 558-564
　　[8] ZHU B, MELLANDER B E. Intermediate Temperature Fuel Cells with Electrolytes Based on Oxyacid Salts[J]. J. Power Sources, 1994, 52(2): 289~293
　　[9] ZHU B, MELLANDER B E. Proton Conduction in Salt-Ceramic Composite Systems [J]. Solid State Ionics,1995, 77: 244~249
　　[10] ZHU B. Functional Ceria-Salt-Composite Materials for Advanced IT-SOFC Applications [J]. J. PowerSources, 2003, 114(1): 1~9
　　[11] ZHU B LIU X G, SCHOBER T. Novel Hybrid Conductors Based on Doped Ceria and BCY20 for ITSOFCApplications [J]. Electrochemistry Communications, 2004, 6(4): 378~383
　　[12] MELLANDER B E, ZHU B. High Temperature Protonic Conduction in Phosphate based Salts [J]. Solid StateIonics, 1993, 61(1~3): 105~110
　　[13] ZHU B, MELLANDER B E. Proton Conduction and Diffusion in Li2SO4 [J]. Solid State Ionics, 1997,97(1~4): 535~540
　　[14] 彭珍珍，郭瑞松，尹自光，等. BaZrO3/NaOH 复相质子导体的制备与性能 [J].稀有材料与工程, 2007,36(S2): 596~598PENG Z Z, GRO R S, YIN Z G, et al. Preparation and properties of Y-Doped BaZrO3/NaOH Proton-conductingComposites [J]. Rare Metal Materials and Engineering, 2007, 36(S2): 596~598