Y-doped SrTiO3 based sulfur tolerant anode for solid oxide fuel cells
Y-doped SrTiO3 based sulfur tolerant anode for solid oxide fuel cells
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DOI：
10.1016/j.jpowsour.2006.11.048
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发表时间：
2007-02-10
影响因子：
9.2
通讯作者：
Visco, Steven J.
中科院分区：
文献类型：
--
作者：
Kurokawa, Hideto;Yang, Liming;Visco, Steven J.
以钇掺杂的SrTiO 3（SYTO）-氧化钇稳定的氧化锆（YSZ）多孔电极为骨架，在其上浸渍纳米氧化铈和钌，制备了具有高耐硫性能的固体氧化物燃料电池（SOFC）阳极。SYTO-YSZ孔壁上的渗透颗粒的尺寸为30-200 nm，并且两种渗透材料显著改善了SYTO-YSZ阳极的性能。渗透的氧化铈覆盖了SYTO-YSZ孔壁的大部分表面，而Ru以单个纳米颗粒分散。在与H2S混合的加湿H2中，检查了具有氧化铈和Ru渗透的SYTO-YSZ阳极的阴极支撑电池的性能和耐硫性。阳极在10-40 ppm的H_2S中表现出高的耐硫性，电池在1073 K、10 ppm的H_2S下表现出恒定的最大功率密度470 mWcm ~（-2）。在外加电流密度为0.5A·cm ~（-2）时，向H-2燃料中加入10 ppm的H_2S使电池电压略有下降，从0.79 V降至0.78 V，但在停止H_2S后，电池电压迅速恢复。氧化铈和Ru渗透的SYTO-YSZ阳极显示出比常规Ni-YSZ阳极高得多的耐硫性。由爱思唯尔公司出版
A solid oxide fuel cell (SOFC) anode with high sulfur tolerance was developed starting from a Y-doped SrTiO3 (SYTO)-yttria stabilized zirconia (YSZ) porous electrode backbone, and infiltrated with nano-sized catalytic ceria and Ru. The size of the infiltrated particles on the SYTO-YSZ pore walls was 30-200 nm, and both infiltrated materials improved the performance of the SYTO-YSZ anode significantly. The infiltrated ceria covered most of the surface of the SYTO-YSZ pore walls, while Ru was dispersed as individual nano-particles. The performance and sulfur tolerance of a cathode supported cell with ceria- and Ru-infiltrated SYTO-YSZ anode was examined in humidified H, mixed with H2S. The anode showed high sulfur tolerance in 10-40 ppm H2S, and the cell exhibited a constant maximum power density 470mWcm(-2) at 10 ppm H,S, at 1073 K. At an applied current density 0.5 A cm(-2), the addition of 10ppm H2S to the H-2 fuel dropped the cell voltage slightly, from 0.79 to 0.78V, but completely recovered quickly after the H2S was stopped. The ceria- and Ru-infiltrated SYTO-YSZ anode showed much higher sulfur tolerance than conventional Ni-YSZ anodes. Published by Elsevier B.V.