The H₂S-tolerance of SrFe_0.75Mo_0.25O_3-δ (SFM) electrodes has been investigated in symmetric proton ceramic fuel cells (PCFC) with BaZr_0.8Ce_0.1Y_0.1O_3-δ (BZCY81) electrolyte. The ionic conductivity of the electrolyte under wet reducing conditions was found to be insignificantly affected in the presence of up to 5000 ppm H₂S. The fuel cell exhibited an OCV of about 0.9 V at 700 °C, which dropped to about 0.6 V and 0.4 V upon exposure to 500 and 5000 ppm H₂S, respectively, on the fuel side. Post characterization of the fuel cell revealed significant degradation of the anode in terms of microstructure and chemical composition due to formation of sulfides such as SrS, MoS₂ and Fe₃S₄. Nevertheless, the fuel cell was still functional due to the sufficient electronic conductivity of some of these sulfides.

在具有BaZr _0.8 Ce _0.1 Y _0.1 O3 _-δ（BZCY81）电解质的对称质子陶瓷燃料电池（PCFC）中，已经研究了SrFe _0.75 Mo _0.25 O3 _-δ（SFM）电极的H ₂ S耐受性。发现在存在高达5000 ppm H ₂ S的情况下，在湿还原条件下电解质的离子电导率几乎没有受到影响。燃料电池在700°C时的OCV约为0.9 V，降至约0.6 V时，OCV降低。暴露于500和5000 ppm H ₂时为0.4 VS分别在燃料侧。燃料电池的后期表征显示，由于硫化物（如SrS，MoS ₂和Fe ₃ S _4）的形成，阳极在微观结构和化学组成方面均显着降低。尽管如此，由于其中一些硫化物具有足够的电子传导性，燃料电池仍能正常工作。