基于离子凝的电极用于非易燃的高温电化学双层电容器
Agnese Gamberini1, Tobias Burton2, Alix Ladam2
1BeDimensional S.p.A., via Lungotorrente Secca 30R, 16163, Genova, Italy.
ChemSusChem
|January 13, 2025
概括
这项研究引入了用于先进电化学双层电容器 (EDLC) 的新型离子凝电极. 这些电极提供高能量密度,优越的稳定性和高温运行,推进了储能技术.
科学领域:
- 材料科学与工程 材料科学与工程
- 电化学 电化学 电化学
- 储能 储能 储能 储能 储能 储能
背景情况:
- 设计纳米结构电极和电解质之间的接口对于高性能电化学双层电容器 (EDLC) 是至关重要的.
- 现有的EDLC通常在充电储存能力,速率能力和操作安全方面面临限制,特别是在高温下.
- 传统的有机电解质限制了EDLC的工作温度范围.
研究的目的:
- 开发一种新的,可持续的方法来制造用于先进EDLC的基于离子凝的电极.
- 提高EDLC的性能,重点关注高能量密度,速度能力和增强的安全性.
- 为了使EDLC具有高温和高压运行能力.
主要方法:
- 采用了一种更新的泥造方法,用离子液 (IL),1-乙基-3-甲基利米达 bis ((fluorosulfonyl) imide (EMIFSI)) 代替传统溶剂.
- 在泥制备过程中,IL直接集成到电极中,从而消除了单独的电解质填充步骤.
- 制造的离子凝电极被用来构建对称的EDLC用于性能评估.
主要成果:
- 离子凝电极表现出异常的电解质可访问性,导致具有高能量密度 (>30Wh/kg) 和高速率性能的EDLC.
- 开发的EDLC在高达180°C的温度下表现出稳定的运行,明显超过传统有机电解质基EDLC的65°C限制.
- 观察到显著的长期稳定性,在10,000个循环后保持88%的容量,在延长的浮动测试中能量密度损失最小.
结论:
- 新的离子凝电极制造方法为先进的EDLC提供了可持续和高效的方法.
- 这些基于离子凝的EDLC显示出下一代能源存储的巨大潜力,特别是在要求高温和高压的应用中.
- 综合IL方法提高了EDLC的性能和安全性,为强大的储能解决方案铺平了道路.
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