Enhanced hydrogen evolution from the MoP/C hybrid by the modification of Ketjen Black

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• 作者：Dezhi Wang ; Yilin Shen ; Xiangyong Zhang ; Zhuangzhi Wu
• 刊名：Journal of Materials Science
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：52
• 期：6
• 页码：3337-3343
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Materials Science, general; Characterization and Evaluation of Materials; Polymer Sciences; Continuum Mechanics and Mechanics of Materials; Crystallography and Scattering Methods; Classical Mechanics;
• 出版者：Springer US
• ISSN：1573-4803
• 卷排序：52

文摘

It is still a great challenge to find highly efficient non-Pt catalysts with good stability for the hydrogen evolution reaction (HER). The molybdenum phosphide (MoP)-based catalysts have been identified as promising candidates to replace noble Pt, but the further improvement of these catalysts is still strongly demanded. Herein, a simple strategy to enhance the HER activity of the MoP catalyst has been proposed, in which a novel MoP/C hybrid is prepared by a facile temperature-programmed reduction method with the modification of Ketjen Black, exhibiting superior HER activity with a smaller Tafel slope of 54 mV dec−1 and a larger current density of 151 mA cm−2 at −400 mV, about 34 times larger than that of the pure MoP catalyst. Moreover, a possible improvement mechanism was also stated.