基于Zn的3D半导体金属有机框架中的高热功率
Jihye Park1, Allison C Hinckley1, Zhehao Huang2
1Department of Chemical Engineering, Stanford University, Stanford, California 94305, United States.
Journal of the American Chemical Society
|November 23, 2020
概括
研究人员开发了一个名为Zn-HAB的新型3D导电金属有机框架 (c-MOF). 这种材料具有有前途的热电特性,标志着3D c-MOF在能源应用中的重大进步.
科学领域:
- 材料科学
- 化学学
- 在能源方面
背景情况:
- 导电金属有机框架 (c-MOF) 对能源应用至关重要.
- 目前的研究主要集中在2D c-MOF,限制了3D结构的探索.
- 开发3D c-MOF对于释放新的功能和属性至关重要.
研究的目的:
- 合成和描述一个新的3D导电金属有机框架 (c-MOF).
- 为了研究新的3D c-MOF的热电性质.
- 探索3D c-MOF在与能源相关的应用中的潜力.
主要方法:
- 使用六氨和Zn (II) 合成3Dc-MOF,命名为Zn-HAB.
- 描述Zn-HAB的结构,多孔性和电子带间隙.
- 在300K时测量电导率,Seebeck系数和功率系数.
主要成果:
- Zn-HAB具有微孔性和大约1.68 eV的带隙.
- 该材料具有0.86 mS cm-1的中等导电性.
- 记录了200μVK-1的高Seebeck系数和3.44nWmK-2的功率系数.
结论:
- Zn-HAB是第一个具有热电性质的内在导电性3DMOF.
- 这项工作扩展了3D c-MOF的合成策略.
- 这些发现表明3D c-MOF在热电能转换中的潜力很大.
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