Chen Wenyi, Shi Xiao-Lei, Li Meng, Liu Ting, Mao Yuanqing, Liu Qingyi, Dargusch Matthew, Zou Jin, Lu Gao Qing Max, Chen Zhi-Gang
School of Chemistry and Physics, ARC Research Hub in Zero-emission Power Generation for Carbon Neutrality, and Centre for Materials Science, Queensland University of Technology, Brisbane, Australia.
School of Mechanical and Mining Engineering, The University of Queensland, Brisbane, Australia.
Science. 2024 Dec 13;386(6727):1265-1271. doi: 10.1126/science.ads5868. Epub 2024 Dec 12.
Limited flexibility, complex manufacturing processes, high costs, and insufficient performance are major factors restricting the scalability and commercialization of flexible inorganic thermoelectrics for wearable electronics and other high-end cooling applications. We developed an innovative, cost-effective technology that integrates solvothermal, screen-printing, and sintering techniques to produce an inorganic flexible thermoelectric film. Our printable film, comprising BiTe-based nanoplates as highly orientated grains and Te nanorods as "nanobinders," shows excellent thermoelectric performance for printable films, good flexibility, large-scale manufacturability, and low cost. We constructed a flexible thermoelectric device assembled by printable n-type BiTe-based and p-type BiSbTe films, which achieved a normalized power density of >3 μW cm K, ranking among the highest in screen-printed devices. Moreover, this technology can be extended to other inorganic thermoelectric film systems, such as AgSe, showing broad applicability.
有限的柔韧性、复杂的制造工艺、高昂的成本以及性能不足是限制用于可穿戴电子产品和其他高端冷却应用的柔性无机热电材料实现规模化和商业化的主要因素。我们开发了一种创新的、具有成本效益的技术，该技术集成了溶剂热法、丝网印刷和烧结技术来制备无机柔性热电薄膜。我们的可印刷薄膜由高度取向的晶粒碲化铋基纳米片和作为“纳米粘合剂”的碲纳米棒组成，对于可印刷薄膜而言，其展现出优异的热电性能、良好的柔韧性、大规模可制造性以及低成本。我们构建了一种由可印刷的n型碲化铋基和p型碲化铋锑薄膜组装而成的柔性热电器件，其归一化功率密度大于3 μW cm² K，在丝网印刷器件中名列前茅。此外，该技术可扩展到其他无机热电薄膜体系，如硒化银，显示出广泛的适用性。
