Towards outstanding energy-efficiency in a recyclable triboelectric nanogenerator based on a soft-rough composite material

Nano Trends Pub Date : 2025-01-21 DOI:10.1016/j.nwnano.2025.100080

Saisai Hu , Ping Su , Deyin Tao , Luhui Zhu , Aiping Chen , Dawei Gu , Mustafa Eginligil

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Abstract

Energy efficiency vs. degradability of materials making up triboelectric nanogenerators (TENGs) is critical for recyclable energy sources. In this work, we first compared voltage output expectation (V_exp) of contact-separation TENG consisting of two tribo-layers: paper and common plastics used in packaging (both non-biodegradable and biodegradable). Detailed analysis based on atomic force microscopy and capacitance measurements demonstrated surface roughness of soft-rough biodegradable polymers (SRBPs) is expected to yield larger V_exp, predictably. A SRBP composite-based TENG was expected to show ∼7.2 times larger V_exp than a hard-flat nonbiodegradable plastic, demonstrating promising charge transfer efficiency; while the measured voltage (V_mea) was only 6.5% of V_exp. This was unlike the other plastics, including a non-composite SRBP, (V_mea/V_exp ∼0.36) and the low V_mea/V_exp in the SRBP composite-based TENG was attributed to intrinsic material properties. Also, energy conversion efficiency in TENG-based on SRBPs was more than double of hard-flat plastics. This shows the potential of the composite SRBP-based TENG as effective energy harvester.

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基于软粗糙复合材料的可回收摩擦电纳米发电机的卓越能源效率

能源效率与构成摩擦电纳米发电机（TENGs）材料的可降解性是可回收能源的关键。在这项工作中，我们首先比较了由两个摩擦层组成的接触分离TENG的电压输出期望（Vexp）：用于包装的纸张和普通塑料（不可生物降解和生物降解）。基于原子力显微镜和电容测量的详细分析表明，软粗糙生物可降解聚合物（srbp）的表面粗糙度有望产生更大的Vexp，这是可以预见的。基于SRBP复合材料的TENG的Vexp预计比硬平面不可生物降解塑料大7.2倍，显示出有希望的电荷转移效率；而测量电压（Vmea）仅为Vexp的6.5%。这与其他塑料不同，包括非复合SRBP，（Vmea/Vexp ~ 0.36）和SRBP复合材料中基于TENG的低Vmea/Vexp归因于固有材料特性。此外，基于SRBPs的teng的能量转换效率是硬平面塑料的两倍多。这显示了基于srbp的复合材料TENG作为有效能量收集器的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Nano Trends

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