La1.5Nd0.3Pr0.2NiO4.16: A New Cathode Material for IT-Solid Oxide Fuel Cells

IF 2.7 4区化学 Q3 CHEMISTRY, PHYSICAL Electrocatalysis Pub Date : 2023-03-04 DOI:10.1007/s12678-023-00818-x

S. Amira, M. Ferkhi, F. Mauvy, S. Fourcade, J. M. Bassat, J. C. Grenier

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Abstract

The La_1.5Nd_0.3Pr_0.2NiO_4.16 material was prepared by the citrate method and used as a cathode for a solid oxide fuel cell (SOFC). The study was carried out in the presence of a thin interfacial layer composed of 50% GDC10 and 50% 8YSZ deposited on both surfaces of the GDC10 (Ce_1.9Gd_0.1O_1.95) electrolyte. The purity of the materials was studied by X-ray diffraction, while X-ray photon-electron spectrometry (XPS) was used to characterize the surface chemical state of the synthesized material; the morphology of the electrode and cross-sectional images of the cell were obtained by scanning electron microscopy (SEM). Iodometric titration has also been performed to evaluate oxygen over-stoichiometry. Cross-sectional SEM images have shown good adherence between all the cell components, and the cationic character of the cathode material was confirmed by the XPS and iodometric analysis. The use of these materials as an oxygen cathode has shown interesting electrochemical properties with an area-specific resistance (ASR) value of the order of 0.060 (Ω.cm²) at 600 °C and 0.022 (Ω.cm²) at 700 °C. The activation energy (Ea) of the LNPNO5 material is very low and is of the order of 0.96 eV.

Graphical Abstract

1. An anionic character of La_1.5Nd_0.3Pr_0.2NiO_4.16 was determined; an important property for easy displacement of oxide ions in these materials.

2. At 600 and 700 °C, the ASRs of La_1.5Nd_0.3Pr_0.2NiO_4.16 were as low as 0.06 Ω.cm² and 0.022 Ω.cm², respectively.

3. The presence of the new interfacial layer (8YSZ (50%) + GDC10 (50%) is of interest to operate at intermediate temperatures for SOFCs.

4. La_1.5Nd_0.3Pr_0.2NiO_4.16 can be qualified to be an excellent cathode material for SOFC fuel cells operating at intermediate temperatures, 600 – 700 °C.

Abstract Image

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La1.5Nd0.3Pr0.2NiO4.16:新型it -固体氧化物燃料电池正极材料

采用柠檬酸盐法制备La1.5Nd0.3Pr0.2NiO4.16材料，并将其用作固体氧化物燃料电池(SOFC)的正极材料。该研究是在GDC10 (Ce1.9Gd0.1O1.95)电解液的两个表面沉积了由50% GDC10和50% 8YSZ组成的薄界面层的情况下进行的。利用x射线衍射研究材料的纯度，利用x射线光子电子能谱(XPS)表征合成材料的表面化学状态;通过扫描电子显微镜(SEM)获得电极的形态和细胞的横切面图像。碘滴定法也被用来评价氧过化学计量学。扫描电镜(SEM)的横截面图显示了电池各组分之间良好的粘附性，XPS和碘量分析证实了阴极材料的阳离子特性。使用这些材料作为氧阴极显示出有趣的电化学性能，其面积比电阻(ASR)值在600℃时为0.060 (Ω.cm2)，在700℃时为0.022 (Ω.cm2)。LNPNO5材料的活化能(Ea)很低，约为0.96 eV。图形摘要测定了La1.5Nd0.3Pr0.2NiO4.16的阴离子性质;氧化离子在这些材料中容易置换的一个重要性质。在600和700°C时，La1.5Nd0.3Pr0.2NiO4.16的asr低至0.06 Ω。Cm2和0.022 Ω。平方厘米,respectively.3。新界面层(8YSZ (50%) + GDC10(50%))的存在对sofc在中等温度下的操作很有兴趣。La1.5Nd0.3Pr0.2NiO4.16可以作为SOFC燃料电池在600 ~ 700℃中温工作的优良正极材料。

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来源期刊

Electrocatalysis CHEMISTRY, PHYSICAL-ELECTROCHEMISTRY

CiteScore

4.80

自引率

6.50%

发文量

审稿时长

>12 weeks

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