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題名 | Internal Methanol Reforming Over Samaria-doped Ceria Electrode in Solid Oxide Fuel Cell=固態氧化物燃料電池之氧化釤摻入氧化鈰電極之內部甲醇重組 |
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作者 | 曾林國; 黃大仁; | 書刊名 | Journal of the Chinese Institute of Chemical Engineers |
卷期 | 31:5 2000.09[民89.09] |
頁次 | 頁493-498 |
分類號 | 468.1 |
關鍵詞 | 燃料電池; 氧化釤; 甲醇重組; Methanol; Reforming; Samaria-doped ceria; Solid oxide fuel cell; |
語文 | 英文(English) |
中文摘要 | 以鈰系列金屬氧化物作為固態氧化物燃料電池之電極-觸媒材料,在開路及閉路狀態下,進行甲醇重組之研究。以不同添加量的氧化釤摻入氧化鈰(SDC),如(CeO₂)₁-x(SmO₁.₅)x,作為電極-觸媒材料來探討其應用性。在溫度範圍為750~900℃和水蒸氣/甲醇的莫耳比為2的條件下進行重組實驗。結果發現,甲醇重組的選擇率與導氧離子性有關;而Ni-SDC比Ni-YSZ具有更高的開路電位。同時,在SDC系統中,(CeO₂)0.9(SmO₁.₅)₀.₁因導電度的大幅增進而有最高的去極化能力,以及對甲醇重組具有最高的選擇率。 |
英文摘要 | Methanol reforming was studied over a ceria-based electrode-catalyst in a solid oxide fuel cell under open-and close- circuit conditions. Different additive contents of Samaria-doped ceria (SDC), i.e., (CeO₂)₁-x(SmO₁₅)x, were investigated to determine its possible application as an electrode-catalyst. Experiments were performed over a temperature range of 750~900℃ and under a steam/methanol molar ration of 2. It may be concluded that the selectivity for methanol reforming is associated with the oxygen ionic conductivity. It was found that the Ni-SDC cermet exhibited a higher open-circuit potential than did that of Ni-YSZ (Yttria-stabilized zirconia). Furthermore, (CeO₂)0.9(SmO₁₅)₀₁ showed the highest depolarization ability in the SDC system because of the enhancement of electrical conductivity and also had the highest selectivity for methanol reforming. |
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