A Novel Method to Purposely Modify the Anode/Electrolyte Interface in Solid Oxide Fuel Cells,ChemistrySelect

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A Novel Method to Purposely Modify the Anode/Electrolyte Interface in Solid Oxide Fuel Cells
ChemistrySelect ( IF 1.9 ) Pub Date : 2019-12-17 , DOI: 10.1002/slct.201904046
Jie Zhao ₁ , Xiaoyong Xu ₂ , Wei Zhou ₃ , Zhonghua Zhu ₂ , Yu Guo ₃ , Shenglai Zhong ₃

Affiliation

A novel method is proposed to modify the Ni‐yttria stabilized zirconia (YSZ) anode/electrolyte interface with Ni‐Sm_0.2Ce_0.8O_2‐δ (SDC) or SDC composite particles. Scanning electron microscopy results confirm that nano‐sized NiO‐SDC particles are only loaded at the anode/electrolyte interface rather than the whole NiO‐YSZ support. With the addition of the Ni‐SDC composite, the peak power density of the Ni‐YSZ anode increases by 24.7% and 18.8% in wet hydrogen and methane at 750 °C, respectively. Electrochemical impedance spectroscopy results show that these improvements are attributed to the promotion of charge transfer and gas diffusion with the addition of the Ni‐SDC composite. Substituting the Ni‐SDC composite with pure SDC can further improve the electroactivity of the Ni‐YSZ anode. The peak power density of the single cell with the Ni‐YSZ/SDC anode rises by 41.7% and 43.4% compared with that of the Ni‐YSZ anode in wet hydrogen and methane at 750 °C, respectively.

中文翻译：

一种故意修改固体氧化物燃料电池中阳极/电解质界面的新方法

提出了一种用Ni-Sm _0.2 Ce _0.8 O2 _-δ修饰Ni-Ytria稳定的氧化锆（YSZ）阳极/电解质界面的新方法（SDC）或SDC复合颗粒。扫描电子显微镜结果证实，纳米级NiO-SDC颗粒仅装载在阳极/电解质界面，而不是整个NiO-YSZ载体。通过添加Ni-SDC复合材料，在750°C的湿氢气和甲烷中，Ni-YSZ阳极的峰值功率密度分别增加了24.7％和18.8％。电化学阻抗谱结果表明，这些改进归因于添加了Ni-SDC复合材料，促进了电荷转移和气体扩散。用纯SDC代替Ni-SDC复合材料可以进一步改善Ni-YSZ阳极的电活性。在750°C的湿氢气和甲烷中，与Ni-YSZ阳极相比，具有Ni-YSZ / SDC阳极的单电池的峰值功率密度分别提高了41.7％和43.4％。

更新日期：2019-12-18

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