Understanding contact electrification <i>via</i> direct covalent bond cleavage of polymer chains for ultrahigh electrostatic charge density

Fu, Haiyan; Gong, Jianliang; Cao, Junhao; Zhang, Zehua; Long, Zuchang; Yang, Bao; Chen, Jianzhuang; Chen, Yiwang; Tao, Xiaoming

doi:10.1039/d4ee00395k

Cited by 3 publications

(1 citation statement)

References 57 publications

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“…A large number of scholars have begun to conduct a lot of research in the field of energy harvesting. At present, the existing energy conversion mechanisms are piezoelectric [4][5][6][7], electromagnetic [8][9][10][11], triboelectric [12,13], electrostatic [14,15], and so on. The piezoelectricelectromagnetic hybrid energy conversion mechanism demonstrates higher output voltage and power levels compared to a single energy conversion mechanism.…”

Section: Introductionmentioning

confidence: 99%

A piezoelectric-electromagnetic hybrid energy harvester for rotational motion driven by magnetic repulsion

Wang,

Lv,

Liu

et al. 2024

Smart Mater. Struct.

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Harvesting energy from rotational motion is an efficient and widely used technology that provides power support for various electronic devices and systems by converting mechanical kinetic energy into electrical energy. This energy harvesting method shows great potential and advantages in industrial automation, transportation, wind power generation, and smart homes. This study proposes a piezoelectric-electromagnetic hybrid energy harvester (HEH) for rotational motion driven by magnetic repulsion. HEH comprises of two parts: a piezoelectric energy harvester (PEH) and an electromagnetic harvester (EMH). HEH utilizes the magnetic drive reciprocating motion to enhance the energy collection efficiency of PEH and EMH. Additionally, by adding the magnetic effect to the ends of bimorph piezoelectric sheets, the spectrum of energy harvesting is expanded. Its parameters are analyzed using theoretical analysis and simulation, and an experimental testbed is established to explore the influence of HEH output performance. The results indicate that the output power reaches its maximum when there are 2 circular magnets on the rotor, the gap distance of magnets is 15mm, and 2 mass blocks at the end of the bimorph piezoelectric sheet. The PEH and EMH outputs are 173.36V and 4.81V, respectively. The maximum output power of HEH is 53.45mW. The power density can reach 6.818mW/cm3. Compared with PEH and EMH, the output performance is improved by 46.94% and 174.95%, respectively. When the rotation speed is 500r/min, HEH can effortlessly light up 80 LEDs. The experimental results all demonstrate the potential of HEH to power low-power sensors.

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Section: Introductionmentioning

confidence: 99%

A piezoelectric-electromagnetic hybrid energy harvester for rotational motion driven by magnetic repulsion

Wang,

Lv,

Liu

et al. 2024

Smart Mater. Struct.

View full text Add to dashboard Cite

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Charge Generation and Enhancement of Key Components of Triboelectric Nanogenerators: A Review

Wang,

Xu,

2024

Advanced Materials

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The past decade has witnessed remarkable progress in high‐performance Triboelectric nanogenerators (TENG) with the design and synthesis of functional dielectric materials, the exploration of novel dynamic charge transport mechanisms, and the innovative design of architecture, making it one of the most crucial technologies for energy harvesting. High output charge density is fundamental for TENG to expand its application scope and accelerate industrialization; it depends on the dynamic equilibrium of charge generation, trapping, de‐trapping, and migration within its core components. Here, this review classifies and summarizes innovative approaches to enhance the charge density of the charge generation, charge trapping, and charge collection layers. The milestone of high charge density TENG is reviewed based on material selection and innovative mechanisms. The state‐of‐the‐art principles and techniques for generating high charge density and suppressing charge decay are discussed and highlighted in detail, and the distinct charge transport mechanisms, the technologies of advanced materials preparation, and the effective charge excitation strategy are emphatically introduced. Lastly, the bottleneck and future research priorities for boosting the output charge density are summarized. A summary of these cutting‐edge developments intends to provide readers with a deep understanding of the future design of high‐output TENG.

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Abnormal contact electrification induced by mechanical deformation between identical materials

Liao,

Mei,

Chen

et al. 2025

Nano Energy

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Understanding contact electrification via direct covalent bond cleavage of polymer chains for ultrahigh electrostatic charge density

Abstract: The ancient and pervasively observed phenomenon of contact electrification (CE) is generally recognized to involve the transfer of electrons, ions, and materials between surfaces. However, compared to the mechanisms of...

Cited by 3 publications

References 57 publications

A piezoelectric-electromagnetic hybrid energy harvester for rotational motion driven by magnetic repulsion

A piezoelectric-electromagnetic hybrid energy harvester for rotational motion driven by magnetic repulsion

Charge Generation and Enhancement of Key Components of Triboelectric Nanogenerators: A Review

Abnormal contact electrification induced by mechanical deformation between identical materials

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