Development of a nitrogen-doped carbon nanotube nanogenerator for mechanical energy harvesting

IF 5.8 3区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Carbon Letters Pub Date : 2025-06-04 DOI:10.1007/s42823-025-00924-4

M. V. Il‵ina, O. I. Soboleva, M. R. Polyvianova, N. N. Rudyk, I. V. Pankov, D. N. Khomlenko, O. I. Il‵in

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Abstract

This study presents, for the first time, a piezoelectric nanogenerators (PENG) model based on the nitrogen-doped carbon nanotubes (N-CNTs) array and demonstrates the ability of N-CNT to convert external oscillations into electrical energy. Molybdenum was proved to be a preferred material for the upper electrode due to its high corrosion resistance and the formation of ohmic contact at the interface with N-CNT. It was shown the operation of the PENG model in constant and pulsed modes. It was found that the output voltage of the PENG model increased linearly from 3 to 60 mV with an increase in the amplitude of the external mechanical influence from 3.5 to 95 μm and decreased from 54 to 26 mV with an increase in the frequency of external influence from 15 to 120 Hz due to an excess of the natural resonant frequency of the nanotubes. The experiments demonstrated that the power density of the N-CNT-based PENG model reached 12.63 μV/cm². It was exhibited that the PENG model can be used not only as a nanogenerator for autonomous power supply of wearable electronic devices, but also as a highly sensitive deformation sensor. In addition, the clamping force of the upper electrode determines the frequency range of the PENG model. The obtained results open wide opportunities for practical application of vertically aligned N-CNTs for autonomous power supply of wearable electronic devices.

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用于机械能量收集的氮掺杂碳纳米管纳米发电机的研制

本研究首次提出了基于氮掺杂碳纳米管（N-CNT）阵列的压电纳米发电机（PENG）模型，并证明了N-CNT将外部振荡转化为电能的能力。由于钼具有较高的耐腐蚀性和在与n -碳纳米管的界面处形成欧姆接触，因此钼被证明是上电极的首选材料。给出了该模型在恒定和脉冲模式下的运行情况。结果表明，当外部机械影响幅度从3.5 μm增加到95 μm时，PENG模型的输出电压从3 mV线性增加到60 mV；当外部机械影响频率从15 Hz增加到120 Hz时，PENG模型的输出电压从54 mV线性降低到26 mV，这是由于纳米管的固有谐振频率过高。实验表明，基于n - cnt的PENG模型的功率密度达到12.63 μV/cm2。结果表明，该模型不仅可以作为可穿戴电子器件自主供电的纳米发电机，还可以作为高灵敏度的变形传感器。此外，上电极的夹紧力决定了PENG模型的频率范围。所获得的结果为垂直排列的N-CNTs在可穿戴电子设备的自主电源中的实际应用开辟了广阔的机会。

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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来源期刊

Carbon Letters CHEMISTRY, MULTIDISCIPLINARY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

7.30

自引率

20.00%

发文量

118

期刊介绍： Carbon Letters aims to be a comprehensive journal with complete coverage of carbon materials and carbon-rich molecules. These materials range from, but are not limited to, diamond and graphite through chars, semicokes, mesophase substances, carbon fibers, carbon nanotubes, graphenes, carbon blacks, activated carbons, pyrolytic carbons, glass-like carbons, etc. Papers on the secondary production of new carbon and composite materials from the above mentioned various carbons are within the scope of the journal. Papers on organic substances, including coals, will be considered only if the research has close relation to the resulting carbon materials. Carbon Letters also seeks to keep abreast of new developments in their specialist fields and to unite in finding alternative energy solutions to current issues such as the greenhouse effect and the depletion of the ozone layer. The renewable energy basics, energy storage and conversion, solar energy, wind energy, water energy, nuclear energy, biomass energy, hydrogen production technology, and other clean energy technologies are also within the scope of the journal. Carbon Letters invites original reports of fundamental research in all branches of the theory and practice of carbon science and technology.