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<p>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&#xa0;V, 1.56 μA, and 188.40 mW·m<sup>−2</sup>, 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&#xa0;V in 70&#xa0;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.</p> Graphical abstract <p></p>

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

  • 期刊论文

  • 发表日期：

    2025年2月14日

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

摘要

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.

Graphical abstract