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用于快充和长寿命有机电池的BN嵌入二胺寡合物的精确合成

Guangwei Shao^1,2, Hang Liu^1,2, Li Chen¹

¹State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Center of Smart Materials and Devices, Wuhan University of Technology Wuhan 430070 China chemwd@whut.edu.cn.

Chemical science

|March 1, 2024

概括

研究人员开发了一种新方法来合成BN-doped二胺 (PDI) 纳米丝用于离子电池 (PIB) 中的有机阴极. 这个策略精确地控制了BN的方向,提高了电池的性能和稳定性.

科学领域:

材料科学材料科学材料科学
有机化学有机化学
电化学电化学电化学

背景情况:

用异电子化 (BN) 单元取代碳-碳键调整了多环芳 (PAH) 的光电子特性.
在大型PAH系统中精确控制BN方向仍然是一个合成挑战.

研究的目的:

开发一种易于合成的BN嵌入二胺 (PDI) 纳米丝带,具有受控的BN方向.
研究这些BN-doped PDI寡合体作为离子电池 (PIB) 的有机阴极的潜力.

主要方法:

简单的合成BN嵌入的PDI纳米带.
在PDI剪裁机中精确调节BN单元偏振方向.
作为有机阴极的BN-doped PDI寡合物的电化学性能评估.

主要成果:

成功合成了嵌入BN的PDI纳米带,并精确控制了BN的方向.
证明了BN-doped PDI寡合物的潜力,作为PIBs的高性能有机阴极.
转换-PTCDI3BN显示了改善的电压,可逆容量 (~130 mA hg-1),优秀的速率能力和超长周期稳定性 (>30,000 个周期).

结论:

合成方法可以获得具有受控BN方向的大型PAH.
对于开发用于二次电池的先进有机电极材料,BN兴奋剂是一种可行的策略.
与最先进的有机阴极相比,开发的BN-doped PDI材料提供了具有竞争力的性能.

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