The Ni-based cermet Solid Oxide Fuel Cell (SOFC) anode is prone to poisoning by sulfur-based odourising agents, and naturally occurring sulfur species, present in unprocessed natural gas feeds. Next generation SOFC anodes should be able to withstand exposure to these poisons in the event of a malfunction or breakdown of desulfurisation units. Here, we present results pertaining to the sulfur-tolerance of Ni/Ce_0.80Gd_0.20O_1.90 (CGO), Pt/CGO and Rh/CGO co-impregnated La_0.20Sr_0.25Ca_0.45TiO₃ anode ‘backbone’ microstructures and their ability to recover performance after being exposed to H₂S. The Ni/CGO co-impregnated system exhibited severe poisoning by H₂S, however, the Rh/CGO system displayed good stability in Area Specific Resistance (ASR) upon introduction of 1–2 ppm of H₂S and the Pt/CGO system showed minimal increases in ASR with the addition of 1–8 ppm H₂S. Recovery measurements performed in non-humidified H₂ at 300 mA cm⁻², after exposure to 8 ppm H₂S, indicated that the Pt/CGO and Rh/CGO systems could recover within 10 min, whilst 60 min were required to achieve almost a full recovery of performance for the Ni/CGO system. Additionally, all three impregnate systems showed good stability in operating voltage, after an initial drop, in a fuel gas containing simulated syngas (2:1 H₂:CO) with 8 ppm H₂S.

镍基金属陶瓷固体氧化物燃料电池（SOFC）阳极易于被未处理天然气进料中存在的硫基除臭剂和天然存在的硫物质中毒。如果脱硫装置发生故障或发生故障，则下一代SOFC阳极应能够承受这些有毒物质的暴露。在这里，我们提出的结果与Ni / Ce _0.80 Gd _0.20 O _1.90（CGO），Pt / CGO和Rh / CGO共浸La _0.20 Sr _0.25 Ca _0.45 TiO ₃阳极'骨架'的耐硫性能有关。暴露于H ₂后恢复性能S. Ni / CGO共浸体系显示出严重的H ₂ S中毒，但是，Rh / CGO体系在引入1–2 ppm的H ₂ S和Pt /时表现出良好的区域比电阻（ASR）稳定性。CGO系统显示，添加1–8 ppm H ₂ S时，ASR的增加最小。暴露于8 ppm H ₂后，在非增湿H _2中以300 mA cm ^-2进行回收率测量S表示Pt / CGO和Rh / CGO系统可以在10分钟内恢复，而需要60分钟才能使Ni / CGO系统的性能几乎完全恢复。另外，所有三种浸渍系统在初始下降后，在含有模拟合成气（2：1 H ₂：CO）和8 ppm H ₂ S的燃料气体中，都表现出良好的工作电压稳定性。