Electrical output performance of triboelectric nanogenerator based on magnetic high entropy alloy

IF 11 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Rare Metals Pub Date : 2025-02-14 DOI:10.1007/s12598-024-03112-x

Meng-Nan Liu, Lu-Yao Wang, Peng Wang, Lin-Xin Wu, Fang Yin, Jun Zhang, Yun-Ze Long

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Abstract

Although traditional soft magnetic materials have been investigated to improve triboelectric nanogenerator (TENG) performance, their electrical output performance remains insufficient. Magnetic high-entropy alloys (HEAs), a new type of magnetic functional material, possess excellent mechanical and magnetic properties. However, the electrical characteristics of TENGs based on magnetic HEAs remain unexplored. Therefore, a TENG based on polyvinylidene fluoride/HEA-polyamide 66 (PHP-TENG) is proposed in this study. The coupling of displacement current from the polarization field and magnetization current generated by time-varying electric-field magnetization of magnetic HEAs can improve the electrical characteristics of TENGs. The maximum voltage, current, and power density of the PHP-TENG are 156.34 V, 1.56 μA, and 188.40 mW·m⁻², respectively. PHP-TENG maintains a stable current output even after 20,000 cycles. Furthermore, it can power a 47 μF commercial capacitor to 2.5 V in 70 s and propel a hygrometer to function normally. In addition, PHP-TENG exhibits satisfactory sensitivity to humidity. These results indicate that TENGs based on magnetic HEAs exhibit potential for high-efficiency energy-collecting devices.

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磁性高熵合金摩擦纳米发电机的电输出性能

传统的软磁材料已被用于改善摩擦纳米发电机（TENG）的性能，但其电输出性能仍然不足。磁性高熵合金（HEAs）是一种新型的磁性功能材料，具有优异的力学性能和磁性能。然而，基于磁性HEAs的teng的电学特性仍未被探索。因此，本研究提出了一种基于聚偏氟乙烯/ hea -聚酰胺66 （PHP-TENG）的TENG。磁HEAs极化场产生的位移电流与时变电场磁化产生的磁化电流耦合可以改善其电学特性。PHP-TENG的最大电压、电流和功率密度分别为156.34 V、1.56 μA和188.40 mW·m−2。PHP-TENG即使在20,000次循环后仍能保持稳定的电流输出。此外，它可以在70秒内将47 μF的商用电容器供电至2.5 V，并推动湿度计正常工作。此外，PHP-TENG对湿度的敏感性令人满意。这些结果表明，基于磁性HEAs的teng具有成为高效能量收集装置的潜力。图形抽象

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来源期刊

Rare Metals 工程技术-材料科学：综合

CiteScore

12.10

自引率

12.50%

发文量

2919

审稿时长

2.7 months

期刊介绍： Rare Metals is a monthly peer-reviewed journal published by the Nonferrous Metals Society of China. It serves as a platform for engineers and scientists to communicate and disseminate original research articles in the field of rare metals. The journal focuses on a wide range of topics including metallurgy, processing, and determination of rare metals. Additionally, it showcases the application of rare metals in advanced materials such as superconductors, semiconductors, composites, and ceramics.