La0.8Sr0.2Co0.8Fe0.2O3 Nanoparticles Formed in Micropores of La0.8Sr0.2MnO3–Yttria Stabilized Zirconia Cathodes
La0.8Sr0.2Co0.8Fe0.2O3 Nanoparticles Formed in Micropores of La0.8Sr0.2MnO3–Yttria Stabilized Zirconia Cathodes
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La0.8Sr0.2MnO3-氧化钇稳定氧化锆阴极微孔中形成的La0.8Sr0.2Co0.8Fe0.2O3纳米粒子
DOI：
10.1115/1.2971052
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发表时间：
2009
影响因子：
--
通讯作者：
K. Yamahara
中科院分区：
文献类型：
--
作者：
Q. S. Zhang;A. Hirano;T. Matsumura;N. Imanishi;Y. Takeda;K. Yamahara
采用反应浸渗法在La0.8Sr0.2Co0.8Fe0.2O3（LSCF）氧化钇稳定氧化锆（YSZ）阴极的微孔中制备了La0.8Sr0.2MnO2（LSM）纳米颗粒。在LSCF的前体硝酸盐溶液中加入硝酸铋作为反应促进剂。通过添加硝酸铋在600° C下观察到LSCF相，并且约IOOnm粒径的LSCF（Bi）均匀地分布在LSM-YSZ表面上。研究了LSM-YSZ/YSZ/LSM-YSZ电池的电极阻抗，发现LSCF（Bi）在LSM-YSZ中的渗透极大地降低了电极极化电阻。在700°C下考察了Ni-YSZ/YSZ/LSM-YSZ阳极支撑燃料电池的性能。LSCF（Bi）渗透的LSM-YSZ阴极在700°C下以97%H2 - 3%H2为燃料显著提高了电池性能。最大功率密度为0.35W/cm 2。
La 0.8 Sr 0.2 Co 0.8 Fe 0.2 O 3 (LSCF) nanoparticles are formed in micropores of La 0.8 Sr 0.2 MnO 2 (LSM)-yttria stabilized zirconia (YSZ) cathodes by reaction-infiltration method. Bismuth nitrate is added in the precursor nitrate solution for LSCF as the reaction promoter. The LSCF phase is observed at 600° C by the addition of bismuth nitrate, and about 100 nm particle size LSCF(Bi) is homogenously distributed on the LSM-YSZ surface. The electrode impedance of LSM-YSZ/YSZ/LSM-YSZ cells is examined and has found that the electrode polarization resistance is extremely reduced by the LSCF(Bi) infiltration in LSM-YSZ. The performance of the anode support fuel cell of Ni-YSZ/YSZ/LSM-YSZ is examined at 700°C. The LSCF(Bi) infiltrated LSM-YSZ cathode significantly enhanced the cell performance with a 97%H 2 -3 %H 2 fuel at 700°C. The maximum power density of 0.35 W/cm 2 is attended.