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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Highly conducting perovskite structured (M-SrCoFe-O-3-delta,O- M = Ce, Ba) cathode for solid oxide fuel cell
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Highly conducting perovskite structured (M-SrCoFe-O-3-delta,O- M = Ce, Ba) cathode for solid oxide fuel cell

机译：高度导电的钙钛矿结构化（M-SRCOFE-O-3-DELTA，O-M = CE，BA）阴极用于固体氧化物燃料电池

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摘要

The perovskite structured cathode Ce0.5Sr0.5Co0.8Fe0.2 O3-delta (CSCF1), Ce0.4Sr0.6Co0.7Fe0.3O3-delta (CSCF2), Ba0.5Sr0.5Co0.8Fe0.2O3-delta (BSCF1) and Ba0.4Sr0.6Co0.7Fe0.3- O3-delta (BSCF2) powders are synthesized by sol-gel process using nitrate based powder chemicals for the synthesis of perovskite structured cathode for SOFCs applications. Cerium is used for the first time on A site of perovskite materials and considered to be more promising cathode material for SOFC. The synthesized powders are characterized by XRD, SEM, FT-IR, TGA and conductivity test. XRD results exhibited the formation of perovskite phase. From SEM, it is found that samples are homogeneous and calculated particle size is found as 685 nm, 917 nm, 691 nm and 689 nm for CSCF1, CSCF2, BSCF1 and BSCF2 respectively. In order to study the stability of the prepared materials TGA is conducted at temperature range from 25 degrees C to 1000 degrees C. TGA results showed negligible weight loss present in CSCF1. Conductivity values obtained from conductivity test of above said prepared samples were 22.878, 0.078, 0.31 and 0.156 Scm(-1) respectively. In particular, the Ce0.5Sr0.5- Co0.8Fe0.2O3-delta (CSCF1) showed the maximum conductivity value of 22.878 Scm(-1) at 600 degrees C in air measured by DC 4-probe method, which is much higher as compared to conductivity values of all other prepared samples. The fuel cell performance is carried out by using CSCF1 as cathodes, LiNiCuZn-oxide as anode and SDC-carbonate as electrolyte. By taking all these factors into account, the CSCF1 is found to be the optimal composition, which lead to the peak conductivity and highest power density as compared to other samples. (C) 2019 Elsevier B.V. All rights reserved.
机译：Perovskite结构阴极Ce0.5sr0.5co0.8fe0.2 o3-delta（cscf1），ce0.4sr0.6co0.7fe0.3o3-delta（cscf2），ba0.5sr0.5co0.8fe0.2o3-delta（bscf1）和Ba0.4SR0.6CO0.7FE0.3-DELTA（BSCF2）粉末通过溶胶 - 凝胶工艺合成，使用硝酸基粉化学品用于合成SOFCS应用的Perovskite结构化阴极。铈首次在钙钛矿材料的部位上使用，并且认为是SOFC的更有前途的阴极材料。合成粉末的特征在于XRD，SEM，FT-IR，TGA和电导率测试。 XRD结果表现出钙钛矿阶段的形成。从SEM中发现样品是均匀的并且计算的粒度为685nm，917nm，691nm和689nm，分别用于CSCF1，CSCF2，BSCF1和BSCF2。为了研究制备的材料的稳定性，TGA在25摄氏度至1000℃的温度范围内进行.TGA结果表明CSCF1中存在可忽略的重量损失。从上述制备样品的电导率试验获得的电导率分别为22.878,0.078,0.31和0.156 scm（-1）。特别是，CE0.5SR0.5- COO.8FE0.2O3-DERTA（CSCF1）在通过DC 4探针方法测量的空气中的600摄氏度下的最大电导率值为22.878 scm（-1），其高得多与所有其他制备样品的电导率相比。燃料电池性能通过使用CSCF1作为阴极，作为电解质作为阳极和SDC-碳酸盐的基础氧化物。通过考虑所有这些因素，发现CSCF1是最佳组合物，其与其他样品相比导致峰值电导率和最高功率密度。 （c）2019 Elsevier B.v.保留所有权利。

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