材料科学
热电效应
碳纳米管
热电材料
塞贝克系数
纳米技术
灵活性(工程)
复合材料
光电子学
热导率
物理
热力学
统计
数学
作者
Yu Liu,Xiao‐Lei Shi,Ting Wu,Hao Wu,Yuanqing Mao,Tianyi Cao,De‐Zhuang Wang,Wei‐Di Liu,Meng Li,Qingfeng Liu,Huajun Chen
标识
DOI:10.1038/s41467-024-47417-y
摘要
Abstract Single-walled carbon nanotubes (SWCNTs)-based thermoelectric materials, valued for their flexibility, lightweight, and cost-effectiveness, show promise for wearable thermoelectric devices. However, their thermoelectric performance requires significant enhancement for practical applications. To achieve this goal, in this work, we introduce rational “triple treatments” to improve the overall performance of flexible SWCNT-based films, achieving a high power factor of 20.29 µW cm −1 K −2 at room temperature. Ultrasonic dispersion enhances the conductivity, NaBH 4 treatment reduces defects and enhances the Seebeck coefficient, and cold pressing significantly densifies the SWCNT films while preserving the high Seebeck coefficient. Also, bending tests confirm structural stability and exceptional flexibility, and a six-legged flexible device demonstrates a maximum power density of 2996 μW cm −2 at a 40 K temperature difference, showing great application potential. This advancement positions SWCNT films as promising flexible thermoelectric materials, providing insights into high-performance carbon-based thermoelectrics.
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