Enhancing Recoverable Bendability in High-Performance Ag2Se-Based Thermoelectrics through Plastic Processing

IF 19.3 1区 材料科学 Q1 CHEMISTRY, PHYSICAL
Wenjun Ding, Xinyi Shen, Ziyan Li, Zimin Fan, Zhiwei Chen, Juan Chen, Jun Luo*, Wen Li* and Yanzhong Pei*, 
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Abstract

Urgent demand for a sustainable power supply for wearables promotes great efforts on the development of flexible thermoelectric devices. The elastic bendability allows the reservation of initial power and flexibility in inorganic thermoelectric films. The elasticity is related to the thickness engineeringly and the elastic strain scientifically, therefore guiding this work to focus on developing elastic thermoelectric generators using high-performing orthorhombic Ag2Se1–xSx films that thinned the bulks through multipass hot-rolling at ∼393 K. Such a plastic deformation enables a creation of dense dislocations and a refinement of grain and, thereby, a dramatic increase in the elastic strain, impressively securing a full recoverability in transport properties for the obtained films even after 100,000 times bending within a radius down to ∼3 mm. The resultant achievement of extraordinary specific power density of ∼5 μW/cm-K2 in a six-leg flexible device robustly demonstrates these alloys as a potentially sustainable power source for wearable electronics.

Abstract Image

通过塑料加工增强 Ag2Se 基高性能热电半导体的可回收弯曲性
可穿戴设备对可持续供电的迫切需求促进了柔性热电设备的大力开发。弹性弯曲性允许在无机热电薄膜中保留初始功率和灵活性。弹性在工程学上与厚度有关,在科学上与弹性应变有关,因此,这项工作的重点是利用高性能正交Ag2Se1-xSx薄膜开发弹性热电发电机。这种塑性变形能够产生密集的位错和细化晶粒,从而大幅增加弹性应变,即使在半径小于 3 毫米的范围内弯曲 100,000 次,也能确保所获得薄膜的传输性能完全恢复。在六脚柔性设备中实现了 ∼5 μW/cm-K2 的超高比功率密度,有力地证明了这些合金是可穿戴电子设备的潜在可持续电源。
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来源期刊
ACS Energy Letters
ACS Energy Letters Energy-Renewable Energy, Sustainability and the Environment
CiteScore
31.20
自引率
5.00%
发文量
469
审稿时长
1 months
期刊介绍: ACS Energy Letters is a monthly journal that publishes papers reporting new scientific advances in energy research. The journal focuses on topics that are of interest to scientists working in the fundamental and applied sciences. Rapid publication is a central criterion for acceptance, and the journal is known for its quick publication times, with an average of 4-6 weeks from submission to web publication in As Soon As Publishable format. ACS Energy Letters is ranked as the number one journal in the Web of Science Electrochemistry category. It also ranks within the top 10 journals for Physical Chemistry, Energy & Fuels, and Nanoscience & Nanotechnology. The journal offers several types of articles, including Letters, Energy Express, Perspectives, Reviews, Editorials, Viewpoints and Energy Focus. Additionally, authors have the option to submit videos that summarize or support the information presented in a Perspective or Review article, which can be highlighted on the journal's website. ACS Energy Letters is abstracted and indexed in Chemical Abstracts Service/SciFinder, EBSCO-summon, PubMed, Web of Science, Scopus and Portico.
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