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优化硫化聚 (乙) 膜用于内部生产的小型氧化还原流电池设置

Antonino Rizzuti¹, Elena Dilonardo^1,2, Gennaro Cozzolino³

¹Department of Civil, Environmental, Land, Building and Chemical Engineering (DICATECh), Politecnico di Bari, Via E. Orabona 4, 70125 Bari, BA, Italy.

|August 28, 2024

概括

在流电池 (VRFB) 中优化硫化聚 (乙) 膜和电解质显著提高了库伦比效率. 这一进步使可扩展的VRFB堆性能用于储能应用.

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:

离子交换膜对于氧化还原流电池 (VRFB) 的性能,耐用性和成本至关重要.
优化膜特性和电解质组成是提高VRFB效率的关键.

研究的目的:

为了优化实验室规模的VRFB操作条件的膜物理化学特征和电解质组成.
将这些优化条件转化为一个大规模的五细胞VRFB堆.

主要方法:

研究的硫化聚乙乙 (SPEEK) 膜具有不同的硫化度 (SD) 和填充剂.
将SPEEK膜与商业的Nafion 115.5进行比较.
对标准硫酸电解质进行化基电解质评估.

主要成果:

SPEEK50-0 (50% SD,0%填充剂) 显示出对的高透性和选择性.
使用化物电解质的SPEEK50-0实现了93.4%的库伦比效率,在单细胞VRFB中表现优于Nafion 115 (88.9%).
优化条件成功扩展到五个细胞的VRFB堆,达到94.5%的库伦比效率.

结论:

SPEEK50-0是VRFB的有希望的,具有成本效益的膜材料.
基于的电解质在与优化的SPEEK膜配对时可以提高VRFB的性能.
该研究成功地证明了优化VRFB组件的可扩展性,用于实际储能.

关键词:

SPEEK/氨基氧化混合膜收费释放分析以化物为基础的电解质.科伦比亚的效率效率.硫化程度的硫化程度.离子选择性膜是一种离子选择性膜.硫化聚 (乙乙基) 膜瓦纳氧化还原流电池的电池流量

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