一种双联体化策略,使铁复合物具有超高循环性,用于水性铁流电池
Shaocong Wang1, Long Ma1, Shiyang Niu1
1State Key Laboratory of Organic-Inorganic Composites, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China.
Angewandte Chemie (International ed. in English)
|January 7, 2024
概括
研究人员为水性全铁流电池 (AIFB) 开发了一种稳定的铁复合物. 这种创新克服了树的生长和的演变,使得长期的,高效的储能以低成本.
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:
- 水性全铁流电池 (AIFB) 提供具有成本效益的,安全的大规模能源存储.
- 阻碍AIFB商业化的主要挑战包括铁石的形成和演化反应 (HER).
研究的目的:
- 为AIFB开发一种稳定和可逆的铁解质.
- 解决非资本基金管理机构中铁石生长和HER的关键障碍.
主要方法:
- 合成了一种新型的铁复合物,利用双联体策略与三甲胺 (TEA) 和2 - 甲基利米达 (MM).
- 研究了Fe3+和Fe2+状态之间的Fe(TEA) MM复合物的氧化还原行为.
- 制造和测试的AIFB使用开发的铁酸盐.
主要成果:
- Fe(TEA) MM复合体表现出稳定和可逆的氧化还原活性,没有铁或HER的生长.
- 使用这种酸盐的AIFB在80 mA cm-2.2时实现了80.5%的能源效率.
- 观察到异常耐用性,在1400个循环后几乎100%的容量保留.
结论:
- 双联体合策略有效地稳定铁酸盐,解决了AIFB的关键问题.
- 这种方法显著提高了AIFB的循环稳定性和业绩.
- 开发的AIFB系统提供了一个低成本的储能解决方案,其资本成本为33.2 kWh-1,比离子和流电池便宜.
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