Effects of Ceria on the Oxygen Reduction Activity and Thermal Cycling Stability of BaCo0.4Fe0.4Zr0.1Y0.1O3−δ Cathode for Solid Oxide Fuel Cells
Effects of Ceria on the Oxygen Reduction Activity and Thermal Cycling Stability of BaCo0.4Fe0.4Zr0.1Y0.1O3−δ Cathode for Solid Oxide Fuel Cells
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二氧化铈对固体氧化物燃料电池BaCo0.4Fe0.4Zr0.1Y0.1O3-阴极氧还原活性和热循环稳定性的影响
DOI：
10.1021/acsaem.2c02949
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发表时间：
2022-11
影响因子：
9.5
通讯作者：
Fan Liangdong
中科院分区：
文献类型：
--
作者：
Li Yanpu;Li Yihang;Singh Manish;Li Zhengnan;Hu Xingliu;Fan Liangdong
BaCo0.4Fe0.4Zr0.1Y0.1O3−δ（BCFZY）已被证明是固体氧化物燃料电池（SOFC）的高活性但大热膨胀阴极催化剂。本工作将氧化钆掺杂氧化铈（GDC）与BCFZY（BCFZY-GDC）混合，研究其氧还原反应活性及与电解质的化学/热相容性。在对称电池中，BCFZY-GDC与电解质的热相容性和阴极活性得到了改善，而与常见复合材料方法的结果相反，氧化铈的添加降低了表面交换和体扩散系数，从而降低了典型燃料电池条件下的电化学性能。这一有趣的现象是基于有限的电子电导率和使用不同的测量技术的作用模式进行探索的。此外，在600-800 °C、升温速率为20 °C min-1的54次热循环中，BCFZY-GDC的SOFC在100 h的测试中表现出显著的稳定性，而BCFZY的SOFC在9次热循环中表现出逐渐降低的性能，在相同的操作条件下，在20 h的测试中失效，强调了SOFC关键部件之间的热相容性对于实际应用中高效持久的能量转换的关键作用。
BaCo0.4Fe0.4Zr0.1Y0.1O3−δ(BCFZY) has been demonstrated to be a highly active yet large thermal expansion cathode catalyst for solid oxide fuel cells (SOFCs). In this work, gadolinia doped ceria (GDC) was mixed with BCFZY (BCFZY-GDC) to investigate its oxygen reduction reaction activities and chemical/thermal compatibility with electrolyte. Improved thermal compatibility of BCFZY-GDC with electrolyte and cathodic activity in symmetric cells were obtained, while, in contrast to the results of the common composite approach, the addition of ceria reduced surface exchange and bulk diffusion coefficient and subsequently decreased electrochemical performance under typical fuel cell condition. This interesting phenomenon was explored based on the limited electronic conductivity and using distinct modes of action of measurement techniques. Besides, SOFCs with BCFZY-GDC showed remarkable stability in 100 h of testing, during which 54 times of thermal cycling operations at 600–800 °C with a ramp rate of 20 °C min–1were performed, whereas SOFCs using BCFZY showed gradually reduced performance in 9 times of thermal cycling and failed within 20 h of testing under the same operational condition, highlighting the crucial role of thermal compatibility among SOFC key components for efficient and durable energy conversion in practical application.
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影响因子：
7.2
作者：
Muhammad Zubair Khan;M. Mehran;R. Song;Seung-Bok Lee;Tak-Hyoung Lim
通讯作者：
Muhammad Zubair Khan;M. Mehran;R. Song;Seung-Bok Lee;Tak-Hyoung Lim
影响因子：
3.9
作者：
Y. Takeda;R. Kanno;M. Noda;Y. Tomida;O. Yamamoto
通讯作者：
Y. Takeda;R. Kanno;M. Noda;Y. Tomida;O. Yamamoto
影响因子：
5.2
作者：
Yingqin Yu;Lixiang Yu;K. Shao;Yihang Li;K. Maliutina;W. Yuan;Qixing Wu;L. Fan
通讯作者：
Yingqin Yu;Lixiang Yu;K. Shao;Yihang Li;K. Maliutina;W. Yuan;Qixing Wu;L. Fan
影响因子：
64.8
作者：
Bian, Wenjuan;Wu, Wei;Ding, Dong
通讯作者：
Ding, Dong
影响因子：
6.6
作者：
Wan, Ting Hei;Saccoccio, Mattia;Ciucci, Francesco
通讯作者：
Ciucci, Francesco