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

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 30, 2024

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

Язык: Английский

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Humidity‐Resistant Wearable Triboelectric Nanogenerator Utilizing a Bound‐Water‐Rich Zwitterionic Hydrogel With Microphase‐Separated Domains

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Дек. 29, 2024

Abstract Triboelectric nanogenerators (TENGs) represent an effective approach for transforming mechanical energy into electrical power, making them suitable wearable electronic applications. Hydrogels as TENGs electrodes are common, but their use direct triboelectric layers remains insufficiently explored. Here, a novel zwitterionic monomer 3‐{1‐[6‐(hydroxymethyl)‐2‐methyl‐3,8‐dioxo‐9‐aza‐4,7‐dioxadodec‐1‐en‐12‐yl]imidazol‐3‐ium‐3‐yl}propane‐1‐sulfonate (VNIPS) is synthesized in combination with acrylic acid (AA) and sulfobetaine methacrylate (SBMA) to create double‐network hydrogel. The hydrogel developed using solvent‐exchange process that facilitated the creation of microphase‐separated domains, notablely increasing its strength (211.9 kPa, 472.3%), conductivity (0.6 mS cm −1 ), anti‐freezing capability (−18.3 °C). In addition, hydrogel's hydrophilic groups interacted water molecules, reducing charge loss humid conditions. When employed positive layer, hydrogel‐based achieved substantial density 456 µC m − 2 output power 464 mW , while maintaining steady open‐circuit voltage (V oc ) 97 V, 92% retention under 80% relative humidity. Moreover, strong adhesion biocompatibility make it applications, such motion sensing Morse code communication. This work demonstrates feasibility hydrogels materials, providing new strategy creating efficient, humidity‐resistant harvesters.

Язык: Английский

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Regulating Contact Electrification and Charge Retention Capability With Metal–Organic Frameworks in Triboelectric Nanogenerator for Self‐Powered Sewage Treatment

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 28, 2025

Abstract The harvesting of ocean wind energy for triboelectric nanogenerators (TENGs) is greatly influenced by the contact electrification (CE) capability, charge retention characteristics, and harsh marine environment. In this work, four highly water‐stable metal–organic frameworks, including MIL‐101(Cr), UiO‐66, ZIF‐8, MOF‐303, are doped into PVA/Ta layers to modulate their CE retention, resistance environments. capability compared at multiple scales electronic, atomic, molecular levels using DFT calculation. combined effect pyrazole ring ─COO─ group contributes highest tribopositivity PVA/Ta/MOF‐303. Besides, reduced HOMO–LUMO gap increased HOMO level make it easier electrons in PVA/Ta/MOF‐303 transfer. Meanwhile, MOF‐303 with high capture located deep can serve as traps reduce dissipation rate. Hence, density PVA/Ta/MOF‐303‐based TENG (PTM‐TENG) 90% RH reaches 361.43 µC m −2 . Hydrogen bonding, coordination effects, electrostatic interactions endow excellent mechanical, anti‐swelling, anti‐aging properties. Finally, PTM‐TENG assembled a self‐powered sewage treatment system, generation ·OH ·O 2 − enables realize water sterilization rate (99.99%) efficient organic pollutant degradation (>95%) within 20 min.

Язык: Английский

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Optimization strategy of triboelectric nanogenerators for high humidity environment service performance

EcoMat, Год журнала: 2024, Номер 6(11)

Опубликована: Окт. 19, 2024

Abstract With triboelectric nanogenerators (TENGs) introduced in 2012, they have emerged the fields of flexible wearable electronics, portable energy, Internet Things (IoTs), and biomedicine by virtue their lightweight, high‐energy conversion, low cost, material selectivity. However, as application areas TENGs increase, ambient humidity human movement generate sweat moisture that can lead to a decrease output, so exploring how operate high environments is critical long‐term development. In this paper, different strategies are enhance environments, such encapsulation, construction hydrophobic/superhydrophobic surfaces, hydrogen bonding enhancement, discuss applications humidity‐resistant self‐powered sensors, energy harvesters, motions, forth. Finally, we explore future directions routes for development TENGs. image

Язык: Английский

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Recent Advances in Self-Powered Wearable Flexible Sensors for Human Gaits Analysis

Nanomaterials, Год журнала: 2024, Номер 14(14), С. 1173 - 1173

Опубликована: Июль 10, 2024

The rapid progress of flexible electronics has met the growing need for detecting human movement information in exoskeleton auxiliary equipment. This study provides a review recent advancements design and fabrication used motion detection. Firstly, comprehensive introduction is provided on various self-powered wearable sensors employed information. Subsequently, algorithms utilized to provide feedback are presented, followed by thorough discussion their methods effectiveness. Finally, concludes with perspectives current challenges opportunities implementing technology.

Язык: Английский

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Superior Charge Density of Triboelectric Nanogenerator via Trap Engineering

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 3, 2024

Abstract Triboelectric nanogenerator (TENG) offers a novel approach for converting high‐entropy mechanical energy into electrical energy, yet achieving high charge density remains critical. Optimizations using dielectrics with specific capacitance have mitigated air breakdown, but loss within persists as limiting factor. Here, based on poly(vinylidene fluoride–trifluoroethylene–chlorofluoroethylene) (P(VDF‐TrFE‐CFE)) capacitance, composites’ trap and are engineered high‐polarity interfaces from barium titanate (BTO) nanoparticles dense chain segment stacking induced by electrostatic interaction polyetherimide (PEI) to enhance retention capability. With modified interfacial traps, an ultrahigh of 9.23 mC m −2 is achieved in external excitation (ECE) TENG 0.2 vol% PEI/P(VDF‐TrFE‐CFE) film, marking the highest reported single‐unit TENGs. This work provides material strategies high‐performance TENGs, paving way their large‐scale practical applications.

Язык: Английский

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High-Temperature Stable Aramid Nanofibers-Based Triboelectric Nanogenerators with Regeneratability and Designability for Real Hot Environments Monitoring

Nano Energy, Год журнала: 2025, Номер unknown, С. 110772 - 110772

Опубликована: Фев. 1, 2025

Язык: Английский

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Development of New Amine-Functionalized Metal-Organic Framework for Enhanced Triboelectrification Using First-Principle Theory of Nanogenerator

Nano Energy, Год журнала: 2024, Номер unknown, С. 110344 - 110344

Опубликована: Окт. 1, 2024

Язык: Английский

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Enhanced Air Filtration and Ammonia Sensing with Cellulose Nanofibers-based Triboelectric Nanogenerators under Harsh Environments

Nano Energy, Год журнала: 2024, Номер 131, С. 110323 - 110323

Опубликована: Окт. 2, 2024

Язык: Английский

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Advancement in piezoelectric nanogenerators for acoustic energy harvesting

Microsystems & Nanoengineering, Год журнала: 2024, Номер 10(1)

Опубликована: Дек. 18, 2024

Abstract The demand for sustainable energy sources to power small electronics like IoT devices has led exploring innovative solutions acoustic harvesting using piezoelectric nanogenerators (PENGs). Acoustic leverages ambient noise, converting it into electrical through the effect, where certain materials generate an electric charge in response mechanical stress or vibrations. This review paper provides a comprehensive analysis of advancements PENG technology, emphasizing their role harvesting. We begin by discussing essential principles piezoelectricity and design considerations optimize capture from sound waves. discussion includes detailed examination various materials, such as polyvinylidene fluoride (PVDF), lead zirconate titanate (PZT), zinc oxide (ZnO) nanowires, which are known superior properties. A critical aspect this is exploration structural designs resonance that enhance efficiency PENGs. delve mechanisms benefits Helmholtz resonators, quarter-wavelength tubes, cantilever beams, instrumental amplifying signals improving conversion rates. Each device’s parameters operational scrutinized highlight contributions field. addresses practical applications PENGs domains. Environmental monitoring systems, wearable electronics, medical stand benefit significantly continuous supplied These can reduce reliance on batteries minimize maintenance harnessing energy, leading more efficient longer-lasting operations. Despite promising potential PENGs, several challenges remain, including material degradation, limitations, integrating these existing technological frameworks. discusses obstacles detail proposes longevity performance systems. Innovations science engineering crucial overcoming hurdles realizing full

Язык: Английский

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