Unveiling the latent potential: Ni/CoFe2O4-loaded electrospun PVDF hybrid composite-based triboelectric nanogenerator for mechanical energy harvesting applications

IF 23.2 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Advanced Composites and Hybrid Materials Pub Date : 2025-03-25 DOI:10.1007/s42114-025-01296-z

Hema Malini Venkatesan, Insun Woo, Jae Uk Yoon, Prasad Gajula, Anand Prabu Arun, Jin Woo Bae

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Abstract

This study investigates the potential of Ni-doped cobalt ferrite (CoFe₂O₄, N-CF) nanoparticles (NPs)-loaded electrospun poly(vinylidene fluoride) (PVDF) composites for triboelectric nanogenerators (TENGs) to efficiently harness electrical energy from low-frequency mechanical vibrations. PVDF was chosen for its strong electroactive polar phase and inherent tribo-negative properties. Cobalt ferrite (CF) NPs exhibit exceptional charge-trapping capabilities, while nickel’s metallic nature minimizes triboelectric losses due to its conductivity. The synergistic effects of Ni-doped CF (N-CF) fillers enhance charge-trapping efficiency and reduce triboelectric losses, significantly boosting TENG performance. Nickel oxide (NiO), CF, and N-CF NPs were synthesized using a facile co-precipitation method, and PVDF composites were fabricated through electrospinning. The physical and crystalline properties of the composites were characterized using various spectroscopic techniques. Results indicated that incorporating 3 wt% N-CF into PVDF optimized the β-crystalline phase content, crucial for improved output performance. Electrospun PVDF/N-CF (PNC) nanocomposite mats served as the tribo-negative (TN) layer, while aluminum (Al) electrode acted as the tribo-positive (TP) layer in TENG device fabrication. Electrical measurements showed that pristine PVDF/Al TENG devices exhibited lower performance (open-circuit potential—V_oc = 22 V, short-circuit current—I_sc = 0.61 µA) compared to the optimized Al/PNC3 TENG devices (V_oc = 421 V, I_sc = 1.0 µA). The importance of a spacer gap was emphasized, with devices incorporating a spacer gap demonstrating superior performance. The optimized TENG device successfully powered over 30 light-emitting diodes and a stopwatch in real-time applications. This study highlights the exceptional output performance of Al/PNC3-based TENGs and provides valuable insights into the development of next-generation sustainable energy harvesting materials.

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揭示潜在的潜力：Ni/ cofe2o4负载的静电纺PVDF混合复合材料摩擦电纳米发电机用于机械能量收集应用

本研究探讨了ni掺杂钴铁氧体（CoFe₂O₄，N-CF）纳米颗粒（NPs）负载电纺聚偏氟乙烯（PVDF）复合材料用于摩擦电纳米发电机（teng）的潜力，以有效利用低频机械振动产生的电能。选择PVDF是因为其强电活性极性相和固有的摩擦负性。钴铁氧体（CF） NPs表现出卓越的电荷捕获能力，而镍的金属性质由于其导电性使摩擦电损失最小化。ni掺杂CF （N-CF）填料的协同效应提高了电荷捕获效率，减少了摩擦损耗，显著提高了TENG性能。采用易溶共沉淀法合成了氧化镍（NiO）、CF和N-CF NPs，并采用静电纺丝法制备了PVDF复合材料。利用各种光谱技术对复合材料的物理和晶体性能进行了表征。结果表明，在PVDF中加入3 wt%的N-CF可优化β-晶相含量，这对提高输出性能至关重要。静电纺PVDF/N-CF （PNC）纳米复合材料垫作为摩擦负（TN）层，铝（Al）电极作为摩擦正（TP）层。电学测量表明，与优化后的Al/PNC3 TENG器件（Voc = 421 V, Isc = 1.0µA）相比，原始PVDF/Al TENG器件表现出较低的性能（开路电位- Voc = 22 V，短路电流- Isc = 0.61µA）。强调了隔离间隙的重要性，结合隔离间隙的设备表现出优越的性能。优化后的TENG装置在实时应用中成功地为30多个发光二极管和一个秒表供电。该研究突出了基于Al/ pnc3的TENGs的卓越输出性能，并为下一代可持续能量收集材料的开发提供了有价值的见解。

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来源期刊

Advanced Composites and Hybrid Materials Multiple-

CiteScore

26.00

自引率

21.40%

发文量

185

期刊介绍： Advanced Composites and Hybrid Materials is a leading international journal that promotes interdisciplinary collaboration among materials scientists, engineers, chemists, biologists, and physicists working on composites, including nanocomposites. Our aim is to facilitate rapid scientific communication in this field. The journal publishes high-quality research on various aspects of composite materials, including materials design, surface and interface science/engineering, manufacturing, structure control, property design, device fabrication, and other applications. We also welcome simulation and modeling studies that are relevant to composites. Additionally, papers focusing on the relationship between fillers and the matrix are of particular interest. Our scope includes polymer, metal, and ceramic matrices, with a special emphasis on reviews and meta-analyses related to materials selection. We cover a wide range of topics, including transport properties, strategies for controlling interfaces and composition distribution, bottom-up assembly of nanocomposites, highly porous and high-density composites, electronic structure design, materials synergisms, and thermoelectric materials. Advanced Composites and Hybrid Materials follows a rigorous single-blind peer-review process to ensure the quality and integrity of the published work.