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題名 | Platinum Supported on Mesoporous Carbon as Electrocatalyst for Direct Methanol Fuel Cells (1): Saccharides as Carbon Source=負載白金之中孔洞碳材觸媒電應用於直接甲醇燃電池(1):以糖類為碳源 |
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作者 | 黃家宏; 黃文星; 劉世鈞; | 書刊名 | 中國機械工程學刊 |
卷期 | 31:4 2010.08[民99.08] |
頁次 | 頁315-324 |
分類號 | 440.34 |
關鍵詞 | 直接甲醇燃電池; 中孔洞碳材; 觸媒; Mesoporous carbon; Electrocatalyst; Electrochemical characterization; |
語文 | 英文(English) |
中文摘要 | 本文探討中孔洞碳材石墨特性,對於應用在直接甲醇燃料電池的觸媒載體時,其表現上的影響;二種六方中孔結構的中孔洞碳材分別利用葡萄糖和可溶解性澱粉,以中孔洞氧化矽當作模板的方法製備結構特性顯示二種中孔洞碳材皆具有高比表面積和集中的粒徑分佈,且負載的白金奈米顆粒具有高分散性,平均粒徑約為3nm。負載觸媒之中孔洞碳材由於具有高活性表面積和集中的中孔洞分佈,與一般商用碳材(XC-72)比較,有更佳之觸媒現。 |
英文摘要 | This paper shows the effect of graphitic character of mesoporous carbons (MCs) on the performances of MC supported catalysts for direct methanol fuel cells (DMFC). Two MC samples with hexagonal mesostructure were prepared from dextrose and soluble starch by nanoreplication method using mesoporous silica as a template. Structural characterizations revealed that both MCs exhibited large surface area and uniform mesopores. The Pt nanoparticles were supported on both MCs with very high dispersion, as the particle size was estimated under 3 nm. The MC supported Pt catalysts exhibited much higher performance, which may be attributed to the high surface area and uniform mesopore networks of MC. Catalytic performance towards ORR was compared with commercial carbon (Vulcan XC-72). |
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