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題名 | 多孔奈米錳酸(鍶)鑭粉末的合成與燒結研究=Synthesis and Sintering of Porous La苽Sr茋MnO[feb0]Powder |
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作者 | 許恆瑞; 王聖璋; 韋文誠; Hsu, Hen-ray; Wang, Sheng-chang; Wei, Wen-cheng J.; |
期刊 | 國立臺灣大學工程學刊 |
出版日期 | 20031000 |
卷期 | 89 2003.10[民92.10] |
頁次 | 頁83-90 |
分類號 | 440.34 |
語文 | chi |
關鍵詞 | 錳酸鍶鑭; 溶凝膠法; 聚丙烯酸; 奈米粉末; 多孔; LSM; Sol-gel method; Nano-powder; Porous; PAA; |
中文摘要 | 本研究以溶膠凝膠合成法來製備多孔、純質之錳酸鍶鑭 (LSM) 粉體,用於燃料電池之陰極材料。材料之製備以硝酸鹽為起始原料,並添加聚丙烯酸 (PAA) 做為晶相穩定劑,經由適當之乾燥過程及熱處理,獲得不同結晶型態及粒度之奈米粉體。文中利用X光繞射儀進行LSM粉末之相鑑定。微結構方面利用掃瞄及穿透式電子顯微鏡 (SEM & TEM) 進行觀察和量測。實驗結果顯示,LSM粉末製程中,利用 (P)AA/LSM = 2之比例,可在500°C溫度下生成奈米級之純LSM結晶顆粒,在1000°C以下的溫度仍保有多孔之特徵。 |
英文摘要 | In this research, La0.8Sr0.2MnO3 precursors were synthesized from metallic nitrates by sol-gel method using polyacrylic acid (PAA) as the chelating to prepare pure and porous powders for the cathode application in solid oxide fuel cell (SOFC). The LSM powders after dried and sintered at suitable temperatures were characterized by X-ray diffractometry (XRD), scanning, and transmission electron microscopes (SEM and TEM). The LSM powder with nano-crystalline synthesized by adding (P)AA/LSM = 2 was obtained after calcined at 500°C for 2h, and still kept porous character up to 1000°C. |
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