A robust direct-propane solid oxide fuel cell with hierarchically oriented full ceramic anode consisting with in-situ exsolved metallic nano-catalysts
A robust direct-propane solid oxide fuel cell with hierarchically oriented full ceramic anode consisting with in-situ exsolved metallic nano-catalysts
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DOI：
10.1016/j.memsci.2023.121637
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发表时间：
2023-04
影响因子：
9.5
通讯作者：
Xi Chen;Jietao Wang;Na Yu;Yao Wang;Dong Zhang;Meng Ni;F. Chen;Tong Liu;M. Ding
中科院分区：
文献类型：
--
作者：
Xi Chen;Jietao Wang;Na Yu;Yao Wang;Dong Zhang;Meng Ni;F. Chen;Tong Liu;M. Ding
钙钛矿氧化物 Sr2Fe1.3Mo0.5Ni0.2O6-σ(SFMNi) 浸渍在具有开放、直孔的分级取向氧化钇稳定氧化锆 (YSZ) (SFMNi@YSZ) 支架上，可转化为原位溶解的 Ni-Fe 合金纳米颗粒结构 SFMNi@YSZ (NiFe@SFMNi@YSZ) 电极，并用于强大的直接丙烷燃料固体氧化物燃料电池（SOFC）。分层定向的开放直孔不仅可以显着促进通过离子浸渍方法引入均匀分布的SFMNi纳米催化剂网络，而且可以大大增强多孔电极中的气体扩散过程，从而大大减少甚至消除浓度电阻。浸渍的SFMNi纳米催化剂，特别是原位溶解的Ni-Fe合金纳米催化剂，可以有效激活阳极中的燃料气体氧化反应，从而大大降低活化电阻并提高电池性能。全陶瓷电极可以有效避免电极聚集和碳结焦，从而对丙烷氧化具有优异的稳定性。我们的研究结果表明，具有分层定向开放直孔的 NiFe@SFMNi@YSZ 全陶瓷电极为直接碳氢化合物 SOFC 提供了广阔的前景。
Perovskite oxide Sr2Fe1.3Mo0.5Ni0.2O6-σ(SFMNi) impregnated on the scaffold of hierarchically oriented yttria-stabilized zirconia (YSZ) with open, straight pores (SFMNi@YSZ), that could transformed intoin-situexsolved Ni–Fe alloy nanoparticles structured SFMNi@YSZ (NiFe@SFMNi@YSZ) electrode, have been prepared and utilized for robust direct propane-fueled solid oxide fuel cell (SOFC). The hierarchically oriented open, straight pores can not only significantly facilitate the introduction of uniformly distributed SFMNi nano-catalyst network via the ion-impregnation method, but also greatly enhance the gas diffusion process in the porous electrode, thus greatly minimizing even eliminating the concentration resistance. The impregnated SFMNi nano-catalysts, especially thein-situexsolved Ni–Fe alloy nano-catalysts, could effectively activate the fuel gas oxidation reaction in the anode, thereby drastically decreasing the activation resistance and enhancing the cell performance. The full ceramic electrode can efficiently avoid electrode aggregation and carbon coking, leading to excellent stability towards propane oxidation. Our findings indicate that NiFe@SFMNi@YSZ full ceramic electrode with hierarchically oriented open, straight pores offers a great promise for direct hydrocarbon SOFC.