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在PyreneRedox活性分子的局部分子重构,用于高性能水性有机流电池

Guangxu Ge^1,2, Fan Li^2,3, Min Yang^2,3

¹Division of Energy Storage, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning, 116023, China.

Advanced materials (Deerfield Beach, Fla.)

|October 21, 2024

概括

研究人员开发了一种新的现场电解方法,用于为水性有机流电池 (AOFB) 合成基于烯的有机氧化还原活性分子. 这种绿色方法可以产生高度稳定和高效的电解质,用于大规模储能.

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:

水性有机流电池 (AOFB) 对电网规模的能源存储具有前景.
开发可扩展,绿色和具有成本效益的稳定有机氧化还原活性分子 (ORAM) 合成方法对于AOFB商业化至关重要.

研究的目的:

开发一种现场有机电解策略,用于合成基于烯的ORAM.
研究电解过程中烯的分子重组及其对电池性能的影响.
为AOFB应用设计稳定的ORAM提供指导.

主要方法:

在流电池中的pyrene前体的in situ有机电解.
通过控制电子云密度和固态障碍来调节分子重组.
合成的以烯为基础的阴解体的电化学性能评估.

主要成果:

基于pyrene的ORAMs通过in situ电解进行合成,产生异构体和二聚体.
阴极体实现了高的电解质利用率 (≈96%) 和体积容量 (>50 Ah L-1).
由于坚固的烯核结构,在约70天内观察到异常的细胞稳定性,最小的容量衰变.

结论:

在现场电合成为AOFBs生产高性能ORAM提供了一个可行的途径.
在电解过程中可以控制分子重构,以增强ORAM特性.
基于Pyrene的ORAM显示出在AOFB中稳定高效的大规模储能的巨大潜力.

关键词:

水性有机流动电池水性有机流动电池在现场电解.分子重构的分子重构.二烯氧化还原活性分子.

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