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首页> 外文会议>Solid Oxide Fuel Cells 10(SOFC-X) pt.1 >Influence of Fuel Contaminants on SOFC Operation: Effect on Performance and Degradation Mechanisms
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Influence of Fuel Contaminants on SOFC Operation: Effect on Performance and Degradation Mechanisms

机译：燃料污染物对SOFC运行的影响：对性能和降解机理的影响

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SOFCs can be operated with biosyngas, but this fuel contains inorganic species, which act as contaminants for SOFCs. One of the most active is H_2S, but salts like KCl can also affect SOFCs. Experiments have been performed to evaluate the interaction between SOFC anode material and these species. A synthetic gas representative of biosyngas containing H_2S and KCl was circulated over Ni-YSZ pellets at 800°C. It is shown that both H_2S and KCl affect the Ni-YSZ anode by forming surface deposits. When KCl is present, K is detected at the surface. In the case of H2S, nickel sulfides are locally formed. In addition SOFCs have been operated with hydrogen containing H_2S. The electrochemical behaviour of the SOFC confirms an effect of H_2S, showing degradation even for the lowest H_2S level tested. This degradation is partly irreversible, which is consistent with the formation of nickel sulfides.
机译：SOFC可以与生物合成气一起运行，但是这种燃料包含无机物，这些无机物会成为SOFC的污染物。 H_2S是最活跃的一种，但像KCl这样的盐也会影响SOFC。已经进行了实验以评估SOFC阳极材料与这些物质之间的相互作用。含有H_2S和KCl的代表生物合成气的合成气在800°C的Ni-YSZ颗粒上循环。结果表明，H_2S和KCl均通过形成表面沉积物而影响Ni-YSZ阳极。当存在氯化钾时，在表面检测到钾。在硫化氢的情况下，会局部形成硫化镍。此外，SOFC已与含氢的H_2S一起运行。 SOFC的电化学行为证实了H_2S的作用，甚至在测试的最低H_2S水平下也显示出降解。这种降解是部分不可逆的，这与硫化镍的形成是一致的。

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