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首页> 外文期刊>International Journal of Electrochemical Science >Stability and Sulfur resistance of Y-doped La0.7Sr0.3CrO3: a promising Solid-Oxide-Fuel-Cell anode
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Stability and Sulfur resistance of Y-doped La0.7Sr0.3CrO3: a promising Solid-Oxide-Fuel-Cell anode

机译：掺Y的La 0.7 Sr 0.3 CrO 3 的稳定性和耐硫性：一种有前途的固体氧化物燃料电池阳极

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摘要

Perovskite-type of Y-doped La0.7Sr0.3CrO3 as a promising anode for solid oxide fuel cell, maintaingood stability in H2S-containing atmosphere based on the results from the X-ray diffraction patternsand Fourier transform infrared spectroscope in our previous work. In the research explore the singlecell performance and reveal its sulfur durability under the real H2S environment. The activity of theanode has a close relationship with its material composition, the crystal structure and the morphologicstructure, etc. Therefore, Y-doped La0.7Sr0.3CrO3 as the anode material is further investigated by XRD,high-resolution transmission electron microscopy and scanning electron microscopy. The surfacecomposition and valence of each element in Y-doped La0.7Sr0.3CrO3 are identified by X-rayphotoelectron spectroscopy. Thermodynamic calculation is used to analyze the stability of eachelement in Y-doped La0.7Sr0.3CrO3 when it is exposed in H2S at the range of partial pressures of sulfur(pS2) and (pO2) simulated the fuel cell conditions. Meanwhile, the single cell with configuration Ydoped La0.7Sr0.3CrO3-SDC/SDC/Ag is measured under real H2S atmosphere at 600, 650 and 700 ℃ forverification of the simulation. Then the electrochemical impedance spectrum is used to analyze thereasons that affected cell performance.
机译：钙钛矿型Y掺杂的La0.7Sr0.3CrO3作为固体氧化物燃料电池的有希望的阳极，根据我们先前工作中的X射线衍射图和傅立叶变换红外光谱仪的结果，在含H2S的气氛中保持良好的稳定性。在研究中探索单电池性能，并揭示其在真实H2S环境下的硫耐久性。阳极的活性与其材料组成，晶体结构和形态结构等密切相关。因此，通过XRD，高分辨率透射电子显微镜和扫描对Y掺杂的La0.7Sr0.3CrO3作为阳极材料进行了进一步研究。电子显微镜。 X射线光电子能谱法鉴定了掺Y的La0.7Sr0.3CrO3中每个元素的表面组成和化合价。热力学计算用于分析掺Y的La0.7Sr0.3CrO3中每种元素在硫分压范围内暴露于H2S中的稳定性，并模拟燃料电池条件。同时，在真实的H2S气氛下于600、650和700℃下测量了Y掺杂La0.7Sr0.3CrO3-SDC / SDC / Ag构型的单电池，以验证仿真结果。然后将电化学阻抗谱用于分析影响电池性能的因素。

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