Diamond Nanoparticles as a Support for Pt and PtRu Catalysts for Direct Methanol Fuel Cells
Diamond Nanoparticles as a Support for Pt and PtRu Catalysts for Direct Methanol Fuel Cells
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DOI：
10.1021/am2018628
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发表时间：
2012-02-01
影响因子：
9.5
通讯作者：
Cabrera, Carlos R.
中科院分区：
文献类型：
--
作者：
La-Torre-Riyeros, Lyda;Guzman-Bas, Rolando;Cabrera, Carlos R.
纳米颗粒形式的金刚石是一种有前途的材料，可用作燃料电池中坚固且化学稳定的催化剂载体。如文献中所报道的，已经对其薄膜和粉末形式进行了物理和电化学研究和表征。在目前的工作中，未掺杂和硼掺杂的金刚石纳米粒子电极，使用油墨粘贴法制备的电化学性能进行了研究。甲醇氧化实验进行了半电池和全燃料电池模式。以硼氢化钠为还原剂，十二烷基苯磺酸钠（SDBS）为表面活性剂，在未掺杂和硼掺杂的金刚石纳米颗粒上化学沉积了铂和钌纳米颗粒。在还原过程之前和之后，通过电子显微镜和光谱技术对样品进行表征。采用墨浆法制备了Pt和Pt-Ru修饰的未掺杂和硼掺杂金刚石纳米颗粒催化体系的膜电极，并在直接甲醇燃料电池系统中进行了电化学实验。结果表明，金刚石负载的催化剂纳米材料是有前途的甲醇燃料电池。
Diamond in nanoparticle form is a promising material that can be used as a robust and chemically stable catalyst support in fuel cells. It has been studied and characterized physically and electrochemically, in its thin film and powder forms, as reported in the literature. In the present work, the electrochemical properties of undoped and boron-doped diamond nanoparticle electrodes, fabricated using the ink-paste method, were investigated. Methanol oxidation experiments were carried out in both half-cell and full fuel cell modes. Platinum and ruthenium nanoparticles were chemically deposited on undoped and boron doped diamond nanoparticles through the use of NaBH4 as reducing agent and sodium dodecyl benzene:sulfonate (SDBS) as a surfactant. Before and after the reduction process, samples were characterized by electron microscopy and spectroscopic techniques. The ink-paste method was also used to prepare the membrane electrode assembly with Pt and Pt-Ru modified undoped and boron-doped diamond nanoparticle catalytic systems, to perform the electrochemical experiments in a direct methanol fuel cell system. The results obtained demonstrate that diamond supported catalyst nanomaterials are promising for methanol fuel cells.