Chaebeen Kwon, Sanghyeon Lee, Chihyeong Won, Kyu Hyoung Lee, Byeonggwan Kim, Sungjoon Cho, Taeyoon Lee
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引用次数: 0
摘要
随着可穿戴电子设备领域的不断扩大,无机热电(TE)材料因其卓越的 TE 特性而被广泛应用于织物中。然而,传统的热法制造 TE 织物因温度过高而导致 TE 材料僵硬,不适合可穿戴应用。在此,我们开发了一种非热法制造的硒化银(Ag2Se)TE 织物,可有效地集成到可穿戴应用中。通过简单的原位化学还原工艺,Ag2Se 纳米粒子在织物内密集形成,即使在拉伸和压缩等机械变形循环 10,000 次后,仍具有显著的电气稳定性。值得注意的是,制成的 Ag2Se TE 织物具有卓越的拉伸性,其拉伸程度是热处理 Ag2Se TE 织物的 1.36 倍,同时还保持了出色的导电性。此外,这种 TE 单元在 370 K 时的功率因数为 9.80 μW m-1 K-2,导电率为 134.45 S cm-1,塞贝克系数为 -26.98 μV K-1。该手套能有效区分简单的触摸、身体疼痛和高温危险,确保了用户的安全和及时响应。
Stretchable Ag2Se Thermoelectric Fabric with Simple and Nonthermal Fabrication for Wearable Electronics
As the field of wearable electronics continues to expand, the integration of inorganic thermoelectric (TE) materials into fabrics has emerged as a promising development due to their excellent TE properties. However, conventional thermal methods for fabricating TE fabrics are unsuitable for wearable applications because of their high temperatures, resulting in rigid TE materials. Herein, a nonthermally fabricated silver selenide (Ag2Se) TE fabric is developed that can be effectively integrated into wearable applications. Ag2Se nanoparticles are densely formed within the fabric through a simple in situ chemical reduction process, resulting in remarkable electrical stability even after 10 000 cycles of mechanical deformation, such as stretching and compression. Notably, the fabricated Ag2Se TE fabric exhibits superior stretchability, stretching ≈1.36 times more than the thermally treated Ag2Se TE fabrics, while retaining its excellent electrical conductivity. Moreover, the TE unit exhibits 9.80 μW m−1 K−2 power factor, 134.45 S cm−1 electrical conductivity, and −26.98 μV K−1 Seebeck coefficient at 370 K. A haptic sensing glove based on the Ag2Se TE fabric as a sensor for detecting potential hazards is demonstrated. The glove effectively distinguishes between simple touch, physical pain, and high-temperature hazards, ensuring user safety and prompt response.
期刊介绍:
Small Science is a premium multidisciplinary open access journal dedicated to publishing impactful research from all areas of nanoscience and nanotechnology. It features interdisciplinary original research and focused review articles on relevant topics. The journal covers design, characterization, mechanism, technology, and application of micro-/nanoscale structures and systems in various fields including physics, chemistry, materials science, engineering, environmental science, life science, biology, and medicine. It welcomes innovative interdisciplinary research and its readership includes professionals from academia and industry in fields such as chemistry, physics, materials science, biology, engineering, and environmental and analytical science. Small Science is indexed and abstracted in CAS, DOAJ, Clarivate Analytics, ProQuest Central, Publicly Available Content Database, Science Database, SCOPUS, and Web of Science.