Lehrstuhl für Technische Chemie, Universität des Saarlandes, Saarbrücken, Germany.
ACS Comb Sci. 2011 Sep 12;13(5):518-29. doi: 10.1021/co2000967. Epub 2011 Aug 26.
We describe here the results of a high throughput screening study for direct methanol fuel cell (DMFC) anode catalysts consisting of new elemental combinations with an optical high-throughput screening method, which allows the quantitative evaluation of the electrochemical activity of catalysts. The method is based on the fluorescence of protonated quinine generated during electrooxidation of methanol. The high-throughput screening included noble-metal free binary and ternary mixed oxides of the elements Al, Co, Cr, Cu, Fe, Mn, Mo, Nb, Ni, Ta, Ti, Zn, and Zr in the oxidized form as well as after prior reduction in hydrogen. In addition 318 ternary and quaternary Pt-containing materials composed out of the mixed oxides of Bi, Ce, Co, Cr, Cu, Fe, Ga, Ge, In, La, Mn, Mo, Nb, Nd, Ni, Pr, Sb, Sn, Ta, Te, Ti, V, Zn, and Zr with a molar Pt-ratio of 10% and 30% were screened. Validation and long time experiments of the hits were performed by cyclovoltammetry (CV). The microstructural stability of the electrode preparations of the lead compositions was studied by X-ray diffraction (XRD) pattern analysis.
我们在这里描述了一项用于直接甲醇燃料电池 (DMFC) 阳极催化剂的高通量筛选研究结果，该研究使用光学高通量筛选方法，对催化剂的电化学活性进行定量评估。该方法基于甲醇电氧化过程中生成的质子化奎宁的荧光。高通量筛选包括氧化态和还原态的 Al、Co、Cr、Cu、Fe、Mn、Mo、Nb、Ni、Ta、Ti、Zn 和 Zr 等元素的二元和三元混合氧化物，以及 318 种含 Pt 的三元和四元材料，这些材料由 Bi、Ce、Co、Cr、Cu、Fe、Ga、Ge、In、La、Mn、Mo、Nb、Nd、Ni、Pr、Sb、Sn、Ta、Te、Ti、V、Zn 和 Zr 的混合氧化物组成，Pt 的摩尔比为 10%和 30%。通过循环伏安法 (CV) 对命中物进行了验证和长时间实验。通过 X 射线衍射 (XRD) 图谱分析研究了铅组成的电极制备的微观结构稳定性。
