可扩展和环保的mxene -四面体,用于下一代柔性热电器件

IF 9.5 2区 材料科学 Q1 CHEMISTRY, PHYSICAL
Priyanshu Banerjee, Jiyuan Huang, Jacob Lombardo, Swapnil B. Ambade, Rohan B. Ambade, Tae Hee Han, Srushti Kulkarni, Shreyasi Sengupta, Zeev Rosenzweig, Howard Fairbrother, Sichao Li, Sunmi Shin and Deepa Madan
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引用次数: 0

摘要

传统的热电发电机(teg)面临着高温、长时间固化过程和稀土/有毒硫族化合物(如碲化铋)的挑战。增材制造被认为是一种比传统制造技术更具时间、能源和成本效益的方法,它提供了更大的灵活性。此外,由于四面体无毒且储量丰富,因此在高温应用中是很有前途的热电材料。在这里,这项工作展示了可扩展和可持续的Cu12Sb4S13 (CAS)为基础的复合薄膜和柔性TEG器件(f-TEG)与二维MXene纳米片使用低热预算增材制造方法用于室温应用。二维MXene纳米片引入了能量势垒散射和纳米尺度特性,通过解耦电导率、塞贝克系数和导热系数,有效地将室温ZT提高到0.22,比体CAS高10%。通过细菌活力研究发现CAS和2D MXenes对环境是安全的。该工艺可用于制造功率为5.3 μW、功率密度为140 μW cm−2的5腿f-TEG器件,其温度ΔT为25 K。因此,这项工作表明,结合可扩展和可持续的材料和方法是高性能室温f- teg的有效策略,可以潜在地收集人体的低废热。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Scalable and environmentally friendly MXene-tetrahedrites for next-generation flexible thermoelectrics†

Scalable and environmentally friendly MXene-tetrahedrites for next-generation flexible thermoelectrics†

Scalable and environmentally friendly MXene-tetrahedrites for next-generation flexible thermoelectrics†

Traditional thermoelectric generators (TEGs) face scalability challenges due to high-temperature, long-duration curing processes and rare-earth/toxic chalcogenides such as bismuth telluride. Additive manufacturing has been investigated as a more time-, energy- and cost-efficient method that offers greater flexibility than traditional manufacturing techniques. Additionally, tetrahedrites are promising thermoelectric materials in high-temperature applications because they are non-toxic and earth-abundant. Herein, this work demonstrates the fabrication of scalable and sustainable Cu12Sb4S13 (CAS) based composite films and flexible TEG devices (f-TEGs) with 2D MXene nanosheets using a low-thermal budget additive manufacturing approach for room temperature applications. 2D MXene nanosheets introduced energy-barrier scattering and nanoscale features to effectively increase the room-temperature ZT to 0.22, 10% higher than bulk CAS, by decoupling electrical conductivity, Seebeck coefficient, and thermal conductivity. CAS and 2D MXenes were found to be environmentally safe through a bacterial viability study. The process is used to create a 5-leg f-TEG device producing a power of 5.3 μW and a power density of 140 μW cm−2 at a ΔT of 25 K. Therefore, this work demonstrates that combining scalable and sustainable materials and methods is an effective strategy for high-performance room-temperature f-TEGs that could potentially harvest the low waste heat energy of the human body.

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来源期刊
Journal of Materials Chemistry A
Journal of Materials Chemistry A CHEMISTRY, PHYSICAL-ENERGY & FUELS
CiteScore
19.50
自引率
5.00%
发文量
1892
审稿时长
1.5 months
期刊介绍: The Journal of Materials Chemistry A, B & C covers a wide range of high-quality studies in the field of materials chemistry, with each section focusing on specific applications of the materials studied. Journal of Materials Chemistry A emphasizes applications in energy and sustainability, including topics such as artificial photosynthesis, batteries, and fuel cells. Journal of Materials Chemistry B focuses on applications in biology and medicine, while Journal of Materials Chemistry C covers applications in optical, magnetic, and electronic devices. Example topic areas within the scope of Journal of Materials Chemistry A include catalysis, green/sustainable materials, sensors, and water treatment, among others.
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