STUDY OF SULFUR-NICKEL INTERACTIONS USING RAMAN SPECTROSCOPY

机译：用拉曼光谱研究硫-镍相互作用

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Ni-YSZ cermet and NiO-YSZ composite are exposed to hydrogen containing different concentrations of H_2S to identify the phases formed under various conditions using Raman spectroscopy and x-ray diffraction (XRD). For samples exposed to hydrogen containing 100 ppm H_2S at 727℃ for 5 days, XRD analysis was unable to detect any changes but several new vibration modes were detected using Raman spectroscopy. These vibration modes are most likely associated with either the adsorption of H_2S on the surfaces of these materials or the formation of nickel sulfides, suggesting that Raman spectroscopy could be a powerful tool for in-situ study of sulfur poisoning of SOFC anodes. For NiO-YSZ composite samples exposed to hydrogen containing 10% H_2S at 950℃ for 5 days, all NiO particles were converted to nickel sulfide, and vibration modes of NiS were detected using Raman spectroscopy.

机译：将Ni-YSZ金属陶瓷和NiO-YSZ复合材料暴露于含不同浓度H_2S的氢气中，以使用拉曼光谱和X射线衍射（XRD）识别在各种条件下形成的相。对于在727℃下暴露于含100 ppm H_2S的氢气5天的样品，XRD分析无法检测到任何变化，但是使用拉曼光谱法检测到了几种新的振动模式。这些振动模式很可能与这些材料表面上的H_2S吸附或硫化镍的形成有关，这表明拉曼光谱法可能是就地研究SOFC阳极硫中毒的有力工具。对于在950℃下暴露于含10％H_2S的氢气中5天的NiO-YSZ复合样品，所有的NiO颗粒都转化为硫化镍，并使用拉曼光谱法检测NiS的振动模式。

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《Proceedings vol.2005-07; International Symposium on Solid Oxide Fuel Cells IX(SOFC-IX) vol.2: Materials; 20050515-20; Quebec City(CA)》|2005年|P.1284-1293|共10页
会议地点 Quebec City(CA)
作者
Jian Dong; Shaowu Zha; Meilin Liu;
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Center for Innovative Fuel Cell and Battery Technologies School of Materials Science and Engineering Georgia Institute of Technology 771 Ferst Drive, Atlanta, GA 30332-0245, USA;

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原文格式 PDF
正文语种 eng
中图分类化学电源、电池、燃料电池;
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STUDY OF SULFUR-NICKEL INTERACTIONS USING RAMAN SPECTROSCOPY

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