Electrostatic breakdown at liquid-solid-gas triple-phase interfaces owing to contact electrification

Matter, Год журнала: 2025, Номер unknown, С. 102007 - 102007

Опубликована: Фев. 1, 2025

Язык: Английский

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Sparking potential over 1200 V by a falling water droplet

Science Advances, Год журнала: 2023, Номер 9(46)

Опубликована: Ноя. 15, 2023

Hydrovoltaic technology has achieved notable breakthroughs in electric output via using the moving boundary of double layer, but voltage induced by droplets is saturated around 350 volts, and underlying mechanism remains to be further clarified. Here, we show that falling water can stably spark an unprecedented up 1200 volts within microseconds they contact electrode placed on top electret surface, approaching theoretical upper limit. This sparking potential explained described a comprehensive model considering water-electrode dynamics from both macroscale droplet spreading microscale layer formation, as well presence circuit capacitance. It demonstrated droplet-induced sufficient directly ionize gas at atmospheric pressure split into hydrogen oxygen, showing wide application fields green energy intelligence.

Язык: Английский

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Advancing Energy Harvesting Efficiency from a Single Droplet: A Mechanically Guided 4D Printed Elastic Hybrid Droplet‐Based Electricity Generator

Advanced Materials, Год журнала: 2023, Номер 35(48)

Опубликована: Авг. 1, 2023

A droplet possesses the ubiquity and potential to harvest a vast amount of energy. To exploit droplets effectively, novel output enhancement strategy that can coexist create synergy with recently studied droplet-based electricity generator (DEG) material/surface structure modification must be investigated. In this study, mechanical buckling-based 4D printed elastic hybrid (HDEG) consisting DEG solid-solid triboelectric nanogenerator (S-S TENG) is first presented. During generation process by impact, HDEG structure, which merged via simple printing technique, permits conversion dissipated energy into energy, resulting in an S-S TENG output. The outputs are naturally integrated owing simultaneous activation single droplet, approximately 30% improvement over DEG. Internal external parametric studies performed as design guidelines. exhibits 25% better supply performance than DEG, demonstrating its applicability power source. This research proposes way toward system efficiently harvests from ubiquitous droplets.

Язык: Английский

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Smart Lanceolate Surface with Fast Fog-Digesting Performance for Triboelectric Energy Harvesting

ACS Nano, Год журнала: 2024, Номер 18(32), С. 21316 - 21325

Опубликована: Авг. 1, 2024

Utilizing the ubiquitous fog in nature to create decentralized energy-harvesting devices, free from geographical and hydrological constraints, presents an opportunity foster sustainable power generation. Extracting electrical energy relies heavily on fog-digesting performance. Improving efficiency of fogwater utilization remains a formidable challenge for existing technologies. Inspired by water-harvesting behavior

Язык: Английский

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Droplet-Based Triboelectric Nanogenerators with Needle Electrodes for Efficient Water Energy Harvesting

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер 17(9), С. 13762 - 13772

Опубликована: Фев. 21, 2025

With the advent of droplet-based triboelectric nanogenerators (D-TENGs), methods for converting raindrop kinetic energy to electrical have developed rapidly. However, current D-TENG designs suffer from slow solid-liquid interface separation speeds and susceptibility liquid residues. These issues compromise output performance D-TENGs limit their applications in high-power appliances. To address this, this study presents a needle electrode nanogenerator (NED-TENG). The functions as top electrode, optimizing contacts efficiently harvesting by leveraging electrostatic induction mechanisms. This is made one end copper wire, with its other directly connected harvester. setup positions all wiring on back substrate, accelerating separation, mitigating residue formation, simplifying device fabrication. Upon assembly device, several factors influencing fabricated action mechanisms are explored improve efficiency. Experimental results reveal that designed only requires 6 s saturate surface charge polytetrafluoroethylene film, achieving short-circuit (ISC) up 4.76 mA an voltage (V0) 563 V. Overall, offers straightforward effective approach rainwater.

Язык: Английский

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Beyond Metallic Electrode: Spontaneous Formation of Fluidic Electrodes from Operational Liquid in Highly Functional Droplet‐Based Electricity Generator

Advanced Materials, Год журнала: 2024, Номер 36(35)

Опубликована: Май 2, 2024

Abstract The droplet‐based electricity generator (DEG) has facilitated efficient droplet energy harvesting, yet diversifying its applications necessitates the incorporation of various to DEG. This study first proposes a methodology for advancing DEG by substituting conventional metallic electrode with electrically conductive water (WE), which is spontaneously generated during operation operating liquid. Due inherent and fluidic nature water, introduction WE maintains electrical output performance while imparting functionalities such as high transparency flexibility. So, resultant applied (WE‐DEG) exhibits optical transmittance (≈99%) retains electricity‐generating capability under varying deformations, including bending stretching. innovation expands versatility DEG, especially, sun‐raindrop dual‐mode harvester demonstrated hybridizing WE‐DEG photovoltaic (PV) cell. hybridization effectively addresses weather‐dependent limitations in each enhances temperature‐induced inefficiencies typically observed PV cells, thereby enhancing overall efficiency. will be poised catalyze new developments research, paving way broader applicability enhanced efficiency harvesting technologies.

Язык: Английский

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Domino-like water film manipulation with multifunctionality

Applied Physics Letters, Год журнала: 2024, Номер 125(5)

Опубликована: Июль 29, 2024

Domino effect is widely known and intuitively understood. Although the concept frequently used, a few works combine it with liquid manipulation. Liquid manipulation essential in many fields; however, large-scale using minimal forces still challenge. Here, we show domino-like process triggered by wind on heterogeneously wettable surfaces. This was demonstrated velocities of between 2.2 3.0 m/s structured surfaces containing water film thickness range 2.5–4.5 mm. The domino dewetting were shown various patterned designs 32–224 mm length; under ideal conditions, could be infinitely transmissible. Such might apply to long-distance directional transportation floats, bed bottom dust cleaning. Other designs, such as branched tree structure, can drive larger objects, remote circuit interrupters shown. method provides an approach for movement tiny toward multifunctionality.

Язык: Английский

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Recent Advances in Enhancing the Output Performance of Liquid-Solid Triboelectric Nanogenerator (L-S TENG): Mechanisms, Materials, and Structures

Nano Energy, Год журнала: 2024, Номер 131, С. 110191 - 110191

Опубликована: Авг. 30, 2024

Язык: Английский

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Off-grid multi-region energy system design based on energy load demand estimation using hybrid nature-inspired optimization algorithms

Energy Conversion and Management, Год журнала: 2024, Номер 315, С. 118766 - 118766

Опубликована: Июль 14, 2024

Язык: Английский

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Photo-responsive liquid–solid triboelectric nanogenerator by photothermal effect

Nano Energy, Год журнала: 2024, Номер 129, С. 110075 - 110075

Опубликована: Июль 31, 2024

Язык: Английский

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