Microwave-assisted synthesis of silica aerogel supported pt nanoparticles for self-humidifying proton exchange membrane fuel cell

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• 作者：Cheng-Hsiu Tsai ; Feng-Lien Yang ; Ching-Hung Chang ; Yui Whei Chen-Yang ; ^{yuiwhei@cycu.edu.tw}
• 关键词：Microwave-assisted ; Silica aerogel ; Self-humidifying proton exchange membrane ; PEMFC
• 刊名：International Journal of Hydrogen Energy
• 出版年：2012
• 期刊代码：42_03603199
• 类别：ch
• 出版时间：May, 2012
• 卷：37
• 期：9
• 页码：7669-7676
• 文件大小：956 K

摘要

In this study, the mesoporous silica aerogel supported Pt nanoparticle (SAP) was synthesized by the simple microwave-assisted method within 90聽s and characterized by WXRD and BET measurements. SAP was then used as a filler to prepare the self-humidifying Nafion^庐-based composite membrane (N/SAP). The dispersion of the catalyst in N/SAP as well as the water uptake and proton conductivity of N/SAP were investigated. Compared to that of the recast Nafion^庐 membrane (RN), the water uptake and the proton conductivity of N/SAP was improved for about 38%and 109%, respectively. In addition, the power density of the PEMFC single cell fabricated with N/SAP at 50聽掳C was 1104聽mW聽cm^鈭? and 913聽mW聽cm^鈭? measured under the humidified condition and dry condition, respectively, which was approximately 91%and 5.5 times higher than that with RN membrane, respectively.