灵活的基于链接器的三酶功能化的2D共价有机框架用于超级电容器和气体吸附应用
Yogesh Kumar1, Ikrar Ahmad1, Anuj Rawat1
1Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India.
ACS applied materials & interfaces
|February 26, 2024
概括
这项研究合成了用于储能和气体吸附的新型多孔共价有机框架 (COF). IITR-COF-1在超级电容和二氧化碳捕获方面表现出卓越的性能,这是由于其高表面积和氧化还原活性三环.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 电化学 电化学 电化学
背景情况:
- 聚合有机框架 (COF) 是储能和气体吸附的有希望的材料,因为它们的高表面积,多孔性和异原子含量.
- 灵活的基于三的三化连接器为COF合成提供可调节的特性.
研究的目的:
- 合成和描述四种新型多孔COF材料,使用基于三酸的三化连接剂和各种三胺连接剂.
- 评估合成的COF用于储能 (超级电容器) 和储气 (CO2和H2) 应用.
- 调查影响这些COF性能的结构-属性关系.
主要方法:
- 在2,4,6-tris(4-formylphenoxy) -1,3,5-triazine (TPT-CHO) 和四种不同的三胺结合剂之间发生多重凝聚反应.
- COF材料的特性包括BET表面积,结晶度和电化学性能.
- 对CO2和H2储能量的气体吸附分析.
主要成果:
- 从最平坦和最大的氨基单体合成的IITR-COF-1,表现出最高的BET表面积 (2830 m2 g-1),优越的结晶性和可重复性.
- IITR-COF-1表现出优异的电化学性能,其特定电容为182.6 Fg-1,能量密度为101.5 Wh kg-1和功率密度为298.3 W kg-1.
- 使用IITR-COF-1的对称超级电容器显示出高容量保留 (111.3%在10k循环后) 和显著的CO2 (25.90重%) 和H2 (2.1重%) 储存容量.
结论:
- 合成的COF,特别是IITR-COF-1,显示出先进的储能和气体捕获应用的巨大潜力.
- 材料特性,如表面积和有氧化还原活性三环的存在,对于提高存储性能至关重要.
- 该研究强调了基于三的COF在应对关键能源和环境挑战方面的多功能性.
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