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商业膜在高温有机流电池中的稳定性和性能

Chiari J Van Cauter¹, Yun Li¹, Sander Van Herck¹

¹Membrane Technology Group (MTG), Division cMACS, Faculty Bioscience Engineering, KU Leuven, Celestijnenlaan 200F, P.O. Box 2454, 3001 Leuven, Belgium.

|August 28, 2024

概括

这项研究评估了在极端pH值和高温下用于氧化还原流电池 (RFB) 的商业膜. 在RFB应用中,Aquivion E98-05显示出最佳的性能和稳定性.

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
储能储能储能储能储能储能

背景情况:

反氧流电池 (RFB) 在极端pH值和高温下面临膜稳定性的挑战.
在恶劣的操作条件下了解膜性能对于推进RFB技术至关重要.

研究的目的:

系统地选有机水性RFB的九种商业膜的性能和稳定性.
为特定的RFB化学和操作条件 (pH,温度) 确定最佳膜.

主要方法:

在pH (≤0和14) 和温度 (高达80°C) 的范围内测试商业膜.
评估膜特性,包括膨胀,面积电阻和离子交叉.
评估热处理后的电池性能和膜稳定性.

主要成果:

在Tiron/2,7-AQDS和DHPS/Fe (CN) 6电池中,Aquivion E98-05在40mA/cm2的电池中表现出卓越的性能和稳定性.
在80 mA/cm2,E-620-PE在DHPS/Fe(CN) 6电池中表现出色,而Sx-050DK在Tiron/2,7-AQDS电池中表现最好.
隔膜稳定性在80°C保存1周后得到证实.

结论:

根据RFB化学和操作电流密度,建议使用特定的膜.
Aquivion E98-05 是一个有前途的候选人要求RFB应用程序.
这项研究为选择适用于极端RFB环境的坚固膜提供了有价值的数据.

关键词:

商业化的离子交换膜.在极端的pH值下.高温氧化还原流电池的高温氧化还原流电池绩效选对表现进行选.氧化还原流电池电池的氧化还原流电池.

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