可充电电池的高潜力和稳定的有机阴极,具有快速充电和广泛温度适应性
Haotian Wang1, Gaopan Liu1, Wen Zhou1
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.
Angewandte Chemie (International ed. in English)
|November 3, 2024
概括
一种新的双极聚合物复合物 (TAC) 通过在碳纳米管上结合三胺和 antraquinone 来提高可充电电池的性能,在广泛的温度下提供高容量和稳定性.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 聚合物化学 聚合物化学
背景情况:
- 有机碳烯化合物是有前途的电池电极,但由于溶解性和低放电潜力而受到损害.
- 开发稳定和高性能有机电极材料对于先进的能量存储至关重要.
研究的目的:
- 为高性能可充电电池设计和合成一种新的双极聚合物复合材料 (TAC).
- 解决有机碳化合物的局限性,包括溶解和低排放潜力.
主要方法:
- 将p型trifenylamine单元移植到n型antraquinone上,以创建一个扩展的π-结合结构.
- 复合材料在现场聚合到碳纳米管上,形成管型核心外结构.
主要成果:
- TAC复合物表现出更高的排放潜力,并抑制了溶解问题.
- 实现了高容量 (193 mAh g-1),优异的速率能力 (17 秒充电) 和长期稳定性 (1000 个循环后 87% 的保留率).
- 经过证明的广泛工作温度范围,容量在-60°C时为72 mAh g-1和在80°C时为165 mAh g-1.
结论:
- 设计的双极聚合物复合材料 (TAC) 为可充电电池中的高性能有机电极提供了有前途的解决方案.
- 独特的结构和双离子储存机制有助于提高电化学性能和稳定性.
- 这种多功能聚合物设计为开发先进的有机材料开辟了道路,用于苛刻的电池应用.
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