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首页> 外文期刊>The journal of physical chemistry, C. Nanomaterials and interfaces >Electrochemical Reactivity of Faceted beta-Co(OH)(2) Single Crystal Platelet Particles in Alkaline Electrolytes
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Electrochemical Reactivity of Faceted beta-Co(OH)(2) Single Crystal Platelet Particles in Alkaline Electrolytes

机译:碱性电解质中刻划β-CO(OH)(2)单晶血小板颗粒的电化学反应性

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摘要

Oxygen evolution reaction is the kinetic bottleneck in the generation of H-2 gas through the electrolysis of water. Understanding how water is electrochemically converted to oxygen is key to the development of high-performance electrocatalysts that can enable energy storage technologies based on water to hydrogen fuel generation. The use of well-defined metal oxide systems allows for the isolation of spatial reactivity in bulk redox conversion and oxygen evolution reactions. Herein, we investigate the electrochemical reactivity of well-faceted single-crystalline beta-Co(OH)(2) platelet particles in alkaline solutions as a function of pH, potential, and mass loading. A geometrical model that describes the electrochemically active surface area contributions for a porous electrode of stacked high-aspect ratio particles is developed, which pinpoints the origin of reactivity for redox conversion processes and oxygen evolution at the edge facets of the particles.
机译:氧气进化反应是通过电解产生H-2气体的动力学瓶颈。 了解水如何电化学转换为氧气是开发高性能电催化剂的关键,可以将基于水的能量存储技术基于水到氢燃料产生。 使用明确定义的金属氧化物系统允许在散装氧化还原转化和氧气进化反应中分离空间反应性。 在此,我们研究了碱性溶液中孔隙尖晶单晶β-CO(OH)(2)颗粒颗粒作为pH,电位和质量负荷的函数的电化学反应性。 开发了一种几何模型,其展开了用于堆叠的高纵横比颗粒的多孔电极的电化学活性表面积贡献,其针对颗粒的边缘小平面处针对氧化还原转换过程和氧气进化定位了反应性的起源。

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