This paper describes an application of a NiMo-ceria-zirconia (NiMo-CZ) catalyst as a micro-reforming layer for solid oxide fuel cells running on isooctane (i.e., a gasoline surrogate). The catalyst layer was applied on top of a conventional anode supported single cell with a configuration of Ni-yttria-stabilized zirconia (YSZ) anode, YSZ/Ce_0.8Sm_0.2O_1.9 bi-layer electrolyte and La_0.6Sr_0.4Co_0.2Fe_0.8O_3-δ cathode. Our findings show that the application of the novel catalyst layer was an effective way to reform the mixture of isooctane and air into H₂ and CO, which facilitated the electrochemical oxidation of complex hydrocarbons at the anode. At 750 °C, the single cell with the micro-reforming layer exhibited a low polarization resistance of 1.36 Ω cm² and a maximum power density of 405 mW cm⁻² in the direct feeding condition of an isooctane/air mixture. At the current density of 500 mA cm⁻², the cell voltage presented a fairly low degradation rate of 3.0 mV h⁻¹ during a 12 h stability test. The excellent electrochemical performance suggests the high catalytic activity of the NiMo-CZ catalyst layer for reforming isooctane and suppressing degradation of the single cell in the direct feeding of isooctane/air.

本文介绍了将NiMo-二氧化铈-氧化锆（NiMo-CZ）催化剂用作在异辛烷（即汽油替代品）上运行的固体氧化物燃料电池的微重整层的应用。将催化剂层施加在具有镍-钇稳定的氧化锆（YSZ）阳极，YSZ / Ce _0.8 Sm _0.2 O _1.9双层电解质和La _0.6 Sr _0.4 Co _0.2 Fe _0.8的常规阳极支撑单电池的顶部O3 _-δ阴极。我们的发现表明，新型催化剂层的应用是将异辛烷和空气的混合物重整为H ₂的有效方法和一氧化碳，可促进阳极处复杂碳氢化合物的电化学氧化。在750℃下，与微重整层的单电池显示出1.36Ωcm的低极化电阻²和405毫瓦厘米的最大功率密度^-2在异辛烷/空气混合物的直接馈电条件。在500 mA cm ^-2的电流密度下，电池电压在12 h的稳定性测试中表现出相当低的3.0 mV h ^-1的降解速率。优异的电化学性能表明，NiMo-CZ催化剂层具有高催化活性，可以重整异辛烷并抑制异辛烷/空气直接进料中单电池的降解。