一种含有纳夫他伦,四,二胺的共价有机聚合物:制备,单晶结构和电池应用
Qiang Dong1, Tuoya Naren1,2, Lei Zhang1
1Department of Materials Science and Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Hong Kong SAR, P. R. China.
Angewandte Chemie (International ed. in English)
|April 19, 2024
概括
研究人员开发了一种新的共价有机聚合物 (COP),用于离子电池的-键. 这种材料,CityU-25,显示出出色的储能和循环稳定性,使其成为先进电池技术的前景.
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:
- 原性- (B←N) 键是构建晶体共价有机聚合物/框架 (COP/COF) 的有效动态联系.
- 开发用于储能的新材料,特别是可充电离子电池,对于推进电池技术至关重要.
研究的目的:
- 使用B←N键作为动态链接构建一个功能共价有机聚合物 (COP).
- 为了评估合成的COP作为可充电离子电池中阳极材料的性能.
主要方法:
- 合成了一种新的COP (CityU-25),使用1,4-bis(二氧化) (BACT) 和N,N'-Di(4-pyridyl) -1,4,5,8-naphthalenetetracarboxdiimide (DPNTCDI) 作为构建块.
- 电化学测试CityU-25作为离子电池中的阳极,以评估其储存能力和循环稳定性.
主要成果:
- 城市U-25展示了出色的可逆存储能力,在0.1A/g的170个循环后达到455mAh/g.
- 该材料表现出令人印象深刻的长期循环稳定性,在0.5A/g的720个循环后,容量为673 mAh/g.
结论:
- 合成的COP,CityU-25,显示出作为可充电离子电池的高性能阳极材料的巨大潜力.
- 该研究强调了B←N结合的COP在先进的储能应用中的适用性.
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