Wu Changxuan, Liu Ying, Li Jiajia, Zhang Mingcheng, Wang Zixing, Cai Kefeng
Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education, School of Materials Science & Engineering, Tongji University, 4800 Caoan Road, Shanghai 201804, People's Republic of China.
ACS Appl Mater Interfaces. 2024 Jul 31;16(30):39623-39630. doi: 10.1021/acsami.4c07332. Epub 2024 Jul 16.
Herein, we develop a facile wet chemical method for the synthesis of AgTe powders at room temperature and flexible AgTe/nylon thermoelectric (TE) films are prepared by vacuum-assisted filtration of the synthesized AgTe powders and then hot pressing. Because of the good crystallinity of AgTe grains and continuous grain boundaries, an optimized film exhibits a power factor of 513 μW m K at 300 K, which stands among the highest values reported for AgTe-based films to date. In addition, the film also has good flexibility. A four-leg flexible TE device assembled with the film generates a power density of 5.46 W m at a temperature gradient of 31.8 K. This work provides a facile and environmentally friendly method for preparing flexible AgTe films.
在此，我们开发了一种简便的湿化学方法，用于在室温下合成AgTe粉末，并通过对合成的AgTe粉末进行真空辅助过滤然后热压来制备柔性AgTe/尼龙热电（TE）薄膜。由于AgTe晶粒具有良好的结晶性和连续的晶界，优化后的薄膜在300 K时的功率因子为513 μW m⁻² K⁻²，这是迄今为止报道的基于AgTe的薄膜中的最高值之一。此外，该薄膜还具有良好的柔韧性。用该薄膜组装的四腿柔性TE器件在31.8 K的温度梯度下产生的功率密度为5.46 W m⁻²。这项工作为制备柔性AgTe薄膜提供了一种简便且环保的方法。
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