脉冲电流操作增强H2O2在零间隙PEM电解器中的胺合钻石网格阳极上的生产
Adam Vass1, Maximilian Göltz2, Hanadi Ghanem2
1Department of Chemical Engineering, MESA+ Institute for Nanotechnology, Faculty of Science and Technology, University of Twente, Drienerlolaan 5, 7522 NB, Enschede, The, Netherlands.
ChemSusChem
|January 16, 2025
概括
使用添加钻石 (BDD) 电极进行脉冲电解,可将过氧化 (H2O2) 产量提高70%. 优化脉冲时间和流量,最大限度地提高H2O2在水氧化中的度.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 添加钻石 (BDD) 电极具有独特的电化学特性.
- 高效的过氧化 (H2O2) 的阳极合成对于各种应用至关重要.
- 脉冲电解的参数可以显著影响反应效率和产品选择性.
研究的目的:
- 通过使用BDD涂层的网电极,通过水氧化研究H2O2的阳极形成.
- 评估脉冲电解对H2O2生产和法拉第效率的影响.
- 为了确定最大化H2O2度在零间隙电解配置的最佳操作条件.
主要方法:
- 通过化学蒸汽沉积制造BDD涂层的网电极.
- 在零间隙电池配置中进行电化学测试.
- 分析H2O2度和法拉第效率在不同脉冲电解参数 (时间,时间,流量) 和恒流电解下.
主要成果:
- 发现0.75cm3min-1的低电解质流速会增加H2O2度.
- 一个最佳的脉冲电解模式 (2s on-time, 4s off-time) 产生了最高的H2O2度.
- 脉冲电解增加了70%的H2O2产量,相比于常流电解在150mA cm-2.2.
结论:
- 脉冲电解是使用BDD电极提高H2O2生产效率的一个有希望的策略.
- 优化脉冲参数和流速对于最大限度地提高零间隙电解器中的H2O2产量至关重要.
- 通过调整BDD形态,流动动力学和电解质组成,可以实现进一步的改进.
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