H2 Evolution and Molecular Electrocatalysts: Determination of Overpotentials and Effect of Homoconjugation
H2 Evolution and Molecular Electrocatalysts: Determination of Overpotentials and Effect of Homoconjugation
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DOI：
10.1021/ic101187v
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发表时间：
2010-11-15
影响因子：
4.6
通讯作者：
Artero, Vincent
中科院分区：
文献类型：
--
作者：
Fourmond, Vincent;Jacques, Pierre-Andre;Artero, Vincent
为了标准化非水溶剂中析氢催化剂的过电势值的测定，并可靠地比较不同小组制备和分析的催化剂，我们建议采用半波电势作为参考电势。我们提供了一种简单的方法，可以通过通常的静态循环伏安图来测量它，并且我们推导了与测量的电位进行比较的公式，同时考虑到同共轭的影响。我们还重新审视了非水溶剂中质子标准还原电位的表格值，E 度(H+H2)。
In an effort to standardize the determination of overpotential values for H-2-evolving catalysts in non-aqueous solvents and allow a reliable comparison of catalysts prepared and assayed by different groups, we propose to adopt the half-wave potential as reference potential. We provide a simple method for measuring it from usual stationary cyclic voltammograms, and we derive the formulas to which the measured potential should be compared, taking into account the effect of homoconjugation. We also revisit tabulated values of the standard reduction potential of protons in nonaqueous solvents, E degrees(H+H2).