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An electrochemical anodization strategy towards high-activity porous MoS2 electrodes for the hydrogen evolution reaction

机译:用于高活度多孔MOS2电极的电化学阳极氧化策略,用于氢进化反应

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摘要

Molybdenum disulfide (MoS2) is a promising non-precious metal electrocatalyst for the hydrogen evolution reaction (HER). Herein, we have described an anodization route for the fabrication of porous MoS2 electrodes. The active porous MoS2 layer was directly formed on the surface of a Mo metal sheet when it was subjected to anodization in a sulfide-containing electrolyte. The Mo sheet served as both a supporter for MoS2 electrocatalysts and a conductive substrate for electron transport. After optimizing the anodization parameters, the anodized MoS2 electrode showed a high electrocatalytic activity with an onset potential of -0.18 V (vs. RHE) for the HER, a Tafel slope of approximate to 101 mV per decade and an overpotential of 0.23 V at a current density of 10 mA cm(-2) for the HER. These results indicate that our facile anodization strategy is an efficient route towards a high-activity MoS2 electrode.
机译:二硫化钼(MOS2)是一种有前途的非贵金属电气催化剂,用于氢进化反应(她)。 这里,我们已经描述了用于制造多孔MOS2电极的阳极氧化途径。 当其在含硫化物的电解质中进行阳极氧化时,在Mo金属板的表面上直接形成有源多孔MOS2层。 Mo片材作为MOS2电催化剂的支撑件和用于电子传输的导电基板。 在优化阳极氧化参数之后,阳极氧化MOS2电极显示出具有-0.18V(Vs.Rhe)的发病电位的高电催化活性,近似为每十年101 mV的Tafel坡度和0.23V的过电位 我的电流密度为10 mA cm(-2)。 这些结果表明,我们的便利阳极氧化策略是朝向高活度MOS2电极的有效路线。

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  • 来源
    《RSC Advances》 |2018年第27期|共6页
  • 作者单位

    Beihang Univ Sch Chem Minist Educ Key Lab Bioinspired Smart Interfacial Sci &

    Techn Beijing 100191 Peoples R China;

    Beihang Univ Sch Chem Minist Educ Key Lab Bioinspired Smart Interfacial Sci &

    Techn Beijing 100191 Peoples R China;

    Beihang Univ Sch Phys &

    Nucl Energy Engn Key Lab Micronano Measurement Manipulat &

    Phys Minist Educ Beijing 100191 Peoples R China;

    Beihang Univ Sch Chem Minist Educ Key Lab Bioinspired Smart Interfacial Sci &

    Techn Beijing 100191 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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