实现长寿命的水性有机氧化还原体流动电池,具有高度稳定,低氧化还原潜力的氨酸解质
Taoyi Kong1, Junjie Li2, Wei Wang2
1Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Institute of New Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Fudan University, Shanghai 200433, China.
ACS applied materials & interfaces
|December 22, 2023
概括
研究人员开发了一种新的有机分子2,3-O-DBAP,用于水性有机氧化还原流电池 (AORFB). 这种稳定的分子可以使电池寿命更长,电压更高,从而促进可持续的能源储存.
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
- 可持续的能源 可持续的能源
背景情况:
- 水性有机氧化还原流电池 (AORFB) 提供可持续的能量存储,但受到有机分子的稳定性和电压的限制.
- 溶解体中的有机活性分子经常遭受化学不稳定性和高氧化还原潜力,阻碍性能.
- 分子工程对于克服AORFBs中的这些局限性至关重要.
研究的目的:
- 为AORFBs设计和合成一种新型,稳定和水溶性有机分子.
- 评估新分子作为阳极活性物质的电化学特性和稳定性.
- 为了展示使用这种工程分子的AORFBs的性能.
主要方法:
- 合成了一种新的氨酸衍生物,即4,4'-(氨酸-2,3-二乙烯酸 (2,3-O-DBAP).
- 电化学表征包括氧化还原潜力测量和稳定性测试.
- 流电池组装和长期循环性能评估在pH14.
主要成果:
- 与同位素相比,2,3-O-DBAP具有优越的溶解性,较低的氧化还原潜力 (-0.699 V 与 SHE 相比) 和增强的化学稳定性.
- 使用2,3-O-DBAP的AORFB实现了平均放电电压为1.12V.
- 流细胞表现出低色率 (0.0127%) 和62天的寿命,自放电量微不足道.
结论:
- 有机活性材料的分子工程是提高AORFB性能的关键.
- 2,3-O-DBAP代表了稳定和高压AORFB的有前途的阳极活性分子.
- 开发的分子有助于推进可持续的储能技术.
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