Corrosion Study of Mesoporous Carbon Supports for Use in PEM Fuel Cells
Corrosion Study of Mesoporous Carbon Supports for Use in PEM Fuel Cells
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PEM 燃料电池用介孔碳载体的腐蚀研究
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
V. Birss
中科院分区：
文献类型：
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作者：
F. Forouzandeh;Dustin Banham;F. Feng;Xiaoan Li;S. Ye;V. Birss
在这项研究中，研究了两种有序、高表面积、介孔碳（OMCs）在PEM燃料电池中的耐腐蚀性，并与微孔Vulcan碳（VC）进行了比较。以六方介孔二氧化硅为硬模板，以蔗糖和蒽为碳前驱体合成了omc，分别记为OMC-S和OMC-A。腐蚀测试方案包括1.4 V 50 s至0.8 V 10 s的电位循环步骤序列，总共18个循环，全部在室温0.5 M H2SO4中进行。通过x射线衍射和热重分析发现，碳的耐蚀性为VC > OMC-A > OMC-S，这与碳的石墨化程度有关。
In this study, the corrosion resistance of two ordered, high surface area, mesoporous carbons (OMCs) were evaluated for PEM fuel cell applications, in comparison with microporous Vulcan carbon (VC). Using a hexagonal mesoporous silica as a hard template, the OMCs were synthesized using sucrose and anthracene as the carbon precursors, denoted as OMC-S and OMC-A, respectively. The corrosion testing protocol involved a potential cycling-step sequence between 1.4 V for 50 s and 0.8 V for 10 s, for a total of 18 cycles, all in room temperature 0.5 M H2SO4. The corrosion resistance of the carbons is found to be VC > OMC-A > OMC-S, which correlates with their degree of graphitization, as determined by X-ray diffraction and thermogravimetric analysis.