增强移动性的替代策略,可调节带隙,以及在半导体结合协调聚合物中改进的电化学能量存储
Sha Wu1,2, Xing Huang3, Shuai Fu3
1Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
Angewandte Chemie (International ed. in English)
|January 21, 2025
概括
基于的联协调聚合物 (c-CPs) 显示出增强的电荷流动性和电容. 这项研究合成了一种新型的Ag-Se聚合物Ag4TSHQ,在导电性和能量储存方面表现优于其硫模拟物.
科学领域:
- 材料科学 材料科学 材料科学
- 化学 化学 化学
- 固态物理 固态物理
背景情况:
- 结合协调聚合物 (c-CPs) 是具有可调节电子特性的混合材料.
- 富含电子的烯联体对高流动性的半导体c-CPs具有前景.
- 替代c-CPs的合成具有挑战性,限制了它们的探索.
研究的目的:
- 合成一种新型的四色-基 (TSHQ) 连接体和相应的Ag-Se c-CP.
- 研究新材料的电荷传输特性和电化学能量储存能力.
- 为了比较基于的c-CP与其硫模拟的性能.
主要方法:
- 在TSHQ配体合成中采用了"4+2"的设计策略.
- 开发了一种三维的Ag-Se协调聚合物,Ag4TSHQ.
- 进行了电导率,频段间隙调制,时间解析的太赫兹光谱学和电化学测量.
主要成果:
- Ag4TSHQ 具有高达 1.6 S/m 的室温导电性.
- 从0.6 eV到1.5 eV的带隙调制通过混合连接体方法实现.
- Ag4TSHQ显示电荷流动性为~350 cm2/V·s,具体电容为340 F/g,性能优于Ag4TTHQ.
结论:
- 基于联体的c-CPs与硫对应物相比,具有优越的电荷传输特性.
- 由于其高电荷流动性,Ag4TSHQ显示了光电子应用的巨大潜力.
- 这种材料对先进的储能技术充满希望,因为它具有很高的特定容量.
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