Efficient Mesh Interface Engineering: Insights from Bubble Dynamics in Electrocatalysis,ACS Applied Materials & Interfaces

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Efficient Mesh Interface Engineering: Insights from Bubble Dynamics in Electrocatalysis
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2021-09-14 , DOI: 10.1021/acsami.1c07637
Long Li ₁ , Wenjun Jiang ₁ , Guang Zhang ₁ , Deqiang Feng ₁ , Ce Zhang ₁ , Wei Yao ₁ , Zhijie Wang _{2,

3}

Affiliation

Electrochemical catalysis offers great potential in energy and mass conversion in academy and industry. However, bubble dynamics and its influence on gas-evolving electrode systems remain ambiguous. Detailed information on the local transport process between different phases and the underlying mechanism are required for the full understanding of two-phase flow evolution and distribution. Here, we construct a three-electrode water splitting reaction system to study the bubble dynamics and system efficiency of titanium electrodes with different morphologies. The dynamics of a gas bubble at an electrode with a plate and 100-mesh, 150-mesh, and 300-mesh structures is systematically investigated with respect to applied voltage conditions. Parameters and underlying mechanisms that influence the two-phase flow evolution and electrochemical reaction performance are carefully discussed. Finally, the underlying dynamic force balance on the gas bubble is analyzed to illustrate the mechanism and experimental observations. Our study provides insights in gas-evolving electrocatalysis and offers opportunities for the design and fabrication of high-performance electrocatalytic reactors.

中文翻译：

高效网格界面工程：电催化中气泡动力学的见解

电化学催化在学术界和工业界提供了巨大的能量和质量转换潜力。然而，气泡动力学及其对气体释放电极系统的影响仍然不明确。要全面了解两相流的演变和分布，需要有关不同相之间局部传输过程和潜在机制的详细信息。在这里，我们构建了一个三电极水分解反应系统来研究不同形貌钛电极的气泡动力学和系统效率。根据施加的电压条件系统地研究了具有板和 100 目、150 目和 300 目结构的电极上气泡的动力学。仔细讨论了影响两相流演变和电化学反应性能的参数和潜在机制。最后，分析了气泡上的潜在动力平衡，以说明机制和实验观察。我们的研究提供了对气体释放电催化的见解，并为高性能电催化反应器的设计和制造提供了机会。

更新日期：2021-09-29

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