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纳米纤维共有机框架作为高能量密度和超快充性能电池的阴极,分离器和阳极

Ju Duan¹, Kexiang Wang¹, Likuan Teng¹

¹State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China.

|October 8, 2024

概括

工程师开发了一种稳定,超快速充电的电动汽车共价有机框架 (COF) 电池. 这种先进的电池提供高能量密度和延长寿命,满足更长的行驶里程和更快的充电时间的需求.

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
纳米技术纳米技术

背景情况:

电动汽车需要具有较长行驶里程和更快充电能力的电池.
目前的电池技术在能量密度,充电速度和寿命方面面临限制.

研究的目的:

设计一个稳定,超快充,高能量密度的全纳米纤维共有机框架 (COF) 电池 (ANCB).
设计用于正极,阳极和分离器元件的先进COF材料,以提高电池性能.

主要方法:

合成基于imine的纳米纤维COF用于阴极,阳极和分离器,使用希夫基反应.
设计了使用纳米纤维COF的层次性多孔结构来改善动力学.
开发了特定的COF化学物质 (AA-COF阴极,TT-COF阳极,BB-COF/PAN分离器) 以实现最佳性能.

主要成果:

该ANCB实现了517Wh kg-1的高能量密度和9771W kg-1的功率密度.
证明了56秒的超快充,具有显著的稳定性 (在5A g-1和100°C时,每周期的容量衰减为0.56%).
该电池表现出高温运行潜力和超长寿命.

结论:

开发的ANCB显示出卓越的超快充性能和高能量密度.
这种基于COF的电池是为电动汽车设备提供动力的有希望的候选人.
层次性的多孔结构和合理的化学设计有助于增强运动和稳定性.

关键词:

所有纳米纤维的COF电池都是纳米纤维.协价有机框架协价有机框架快速大众运输是快速的大众运输高能量密度,高能量密度.超快速充电超快速充电超快速充电

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