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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 >Influence of the ratio between Ni and BaCe_(0.9)Y_(0.1)O_(3-δ) on microstructural and electrical properties of proton conducting Ni-BaCe_(0.9)Y_(0.1)O_(3-δ) anodes
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Influence of the ratio between Ni and BaCe_(0.9)Y_(0.1)O_(3-δ) on microstructural and electrical properties of proton conducting Ni-BaCe_(0.9)Y_(0.1)O_(3-δ) anodes

机译：Ni与BaCe_（0.9）Y_（0.1）O_（3-δ）之比对质子导电Ni-BaCe_（0.9）Y_（0.1）O_（3-δ）阳极微观结构和电性能的影响

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摘要

Cermet anode substrates Ni-BaCe_(0.9)Y_(0.1)O_(3-δ) (Ni-BCY10) with varied ratios between Ni and BCY10 were prepared. BCY10 powders were prepared by the citrate-nitrate auto-combustion method and anode substrates were prepared by the method of evaporation and decomposition of solutions and suspensions. Sintered anode substrates were reduced and their properties were examined before and after reduction as a function of the ratio between Ni and BCY10. Microstructural properties of the pellets were investigated using X-ray diffraction analysis and field emission scanning electron microscopy. The influence of the Ni: BCY10 ratio on the microstructure of conducting paths through ceramic and metal parts was discussed. Impedance spectroscopy measurements were used for evaluation of electrical properties of the anode pellets. The high conductivity values of reduced anodes confirmed percolation through Ni particles even for an anode with a reduced amount of nickel. Fuel cell tests were carried out in order to examine the influence of the Ni:BCY10 ratio on fuel cell performance and to compare characteristics of cermet anodes with platinum electrodes. The ratio between Ni and BCY10 did have a slight influence on the power output of fuel cells. Fuel cells with a cermet anode demonstrated a higher power output compared to fuel cells with a platinum electrode.
机译：制备了Ni和BCY10比例不同的金属陶瓷阳极基材Ni-BaCe_（0.9）Y_（0.1）O_（3-δ）（Ni-BCY10）。通过柠檬酸-硝酸盐自燃法制备BCY10粉末，并通过溶液和悬浮液的蒸发和分解方法制备阳极基质。还原烧结的阳极基板，并在还原之前和之后根据Ni和BCY10之间的比例检查其性能。使用X射线衍射分析和场发射扫描电子显微镜研究颗粒的微结构性质。讨论了Ni：BCY10比对通过陶瓷和金属零件的导电路径的微观结构的影响。阻抗谱测量用于评估阳极粒料的电性能。还原的阳极的高电导率值证实了即使对于镍含量降低的阳极，也会通过Ni颗粒渗滤。进行燃料电池测试是为了检验Ni：BCY10比对燃料电池性能的影响，并比较金属陶瓷阳极和铂电极的特性。 Ni和BCY10之间的比例确实对燃料电池的功率输出有轻微影响。具有金属陶瓷阳极的燃料电池比具有铂电极的燃料电池具有更高的功率输出。

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