Acid-Doped Pyridine-Based Polybenzimidazole as a Positive Triboelectric Material with Superior Charge Retention Capability

ACS Nano, Journal Year: 2024, Volume and Issue: 18(5), P. 4467 - 4477

Published: Jan. 24, 2024

The energy conversion efficiency of a triboelectric nanogenerator (TENG) is severely limited by the charge density materials, while drastic and unavoidable decay happens during contact due to insufficient retention capacity positive materials. Here, elaborately synthesized acid-ion-doped pyridine-based polybenzimidazole processing with strong capability demonstrated couple negatively corona-polarized electrets. As illustrated thermal stimulation an ion mass spectrometer, formation acid-ion chimerism processes high activation for stored charges, selective anion migration can compensate escape polarized charge. Accordingly, reach up 596 μC m–2 rate reaches 49.7%, which so far highest intrinsic obtained in open air. Thus, ionic strategy provides effective way suppress escaping air gives great expandable avenue material challenges TENG's practical deployment.

Language: Английский

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Triboelectric nanogenerators based on hydrated lithium ions incorporated double-network hydrogels for biomechanical sensing and energy harvesting at low temperature

Nano Energy, Journal Year: 2024, Volume and Issue: 125, P. 109521 - 109521

Published: March 20, 2024

Language: Английский

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Efficient energy conversion mechanism and energy storage strategy for triboelectric nanogenerators

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Aug. 2, 2024

Energy management strategy is the essential approach for achieving high energy utilization efficiency of triboelectric nanogenerators (TENGs) due to their ultra-high intrinsic impedance. However, proven in practical applications remains low, and output regulation functionality still lacking. Herein, we propose a detailed transfer extraction mechanism addressing voltage charge losses caused by crucial switches circuits. The conversion increased 8.5 times through synergistical optimization TENG switch configurations. Furthermore, TENG-based power supply with storage regularization functions realized system circuit design, demonstrating stable powering electronic devices under irregular mechanical stimuli. A rotating that only works 21 s can make hygrothermograph work stably 417 s. Even hand driving, various types TENGs consistently provide such as calculators mini-game consoles. This provides an in-depth between circuits, also addresses technical challenge converting unstable into usable electricity field. Effective enable realistic applications. Here, authors optimize configurations improve design functionalities.

Language: Английский

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Compliant Iontronic Triboelectric Gels with Phase-Locked Structure Enabled by Competitive Hydrogen Bonding

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 16(1)

Published: April 9, 2024

Rapid advancements in flexible electronics technology propel soft tactile sensing devices toward high-level biointegration, even attaining perception capabilities surpassing human skin. However, the inherent mechanical mismatch resulting from deficient biomimetic properties of materials poses a challenge to application wearable human-machine interaction. Inspired by innate biphasic structure subcutaneous tissue, this study discloses skin-compliant iontronic triboelectric gel via phase separation induced competitive hydrogen bonding. Solvent-nonsolvent interactions are used construct bonding systems trigger separation, and soft-hard alternating phase-locked confers with Young's modulus (6.8-281.9 kPa) high tensile (880%) compatible The abundance reactive hydroxyl groups gives excellent tribopositive self-adhesive (peel strength > 70 N m

Language: Английский

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Multimodal Sensors Enabled Autonomous Soft Robotic System with Self-Adaptive Manipulation

ACS Nano, Journal Year: 2024, Volume and Issue: 18(14), P. 9980 - 9996

Published: Feb. 22, 2024

Human hands are amazingly skilled at recognizing and handling objects of different sizes shapes. To date, soft robots rarely demonstrate autonomy equivalent to that humans for fine perception dexterous operation. Here, an intelligent robotic system with autonomous operation multimodal ability is developed by integrating capacitive sensors triboelectric sensor. With distributed multiple sensors, our robot can not only sense memorize information but also enable adaptive grasping method positioning grasp control, during which the sensory be captured sensitively fused feature level crossmodally objects, leading a highly enhanced recognition capability. The proposed system, combining performance physical intelligence biological systems (i.e., self-adaptive behavior perception), will greatly advance integration actuators robotics in many fields.

Language: Английский

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Artificial intelligence enabled self-powered wireless sensing for smart industry

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 492, P. 152417 - 152417

Published: May 20, 2024

Language: Английский

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Rotary Wind‐driven Triboelectric Nanogenerator for Self‐Powered Airflow Temperature Monitoring of Industrial Equipment

Advanced Science, Journal Year: 2024, Volume and Issue: 11(13)

Published: Jan. 19, 2024

Heat dissipation performance is crucial for the operational reliability of industrial equipment, which can be monitored by detecting wind or airflow temperature radiator. The emergence triboelectric nanogenerators (TENGs) provides new routes energy harvesting and self-powered sensing. Herein, a rotary wind-driven nanogenerator (RW-TENG) with soft-contact working mode newly designed to achieve tunable contact areas utilizing reliable thermal response NiTi shape memory alloy (SMA) air/wind temperature. RW-TENG generate different outputs under air stimulation speeds temperatures, demonstrated as power source online monitoring sensors, speed sensing, monitoring. Specifically, sensor sensitivity 0.526 µA m-1 s between 2.2 19.6 m s-1, device high temperature, show relatively short time (109 s), strong anti-interference ability outstanding long-term durability. This study introduces an innovative route real-time detection in wind-cooled showing broad application prospects information perception intelligent sensing IoTs.

Language: Английский

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Molecular Doped Biodegradable Triboelectric Nanogenerator with Optimal Output Performance

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(29)

Published: March 17, 2024

Abstract Biodegradable polymers (BPs)‐based triboelectric nanogenerators (TENGs) have advantages, including biocompatibility and biodegradability. However, biodegradable TENGs (BD‐TENGs) possess relatively low output performance, limiting their application due to the small differences in polarities for most BPs. Molecular doping is a simple effective method altering polarity of materials improving performance BD‐TENGs. there lack laws mechanism about different doped molecules, especially molecules with biodegradability biocompatibility. Here, kinds are selected tribopositive tribonegative materials, respectively, related researched. In particular, BD‐TENG improved several times by amounts poly (propylene glycol) (PPG) ethyl cellulose (EC), enhanced resolution abnormal respiratory signal monitoring. This work not only provides theoretical guidance selection but also conducts in‐depth research molecular‐level mechanisms.

Language: Английский

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Snake-scale stimulated robust biomimetic composite triboelectric layer for energy harvesting and smart health monitoring

Nano Energy, Journal Year: 2024, Volume and Issue: 122, P. 109266 - 109266

Published: Jan. 8, 2024

Language: Английский

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Perovskite Nanocrystals Induced Core–Shell Inorganic–Organic Nanofibers for Efficient Energy Harvesting and Self-Powered Monitoring

ACS Nano, Journal Year: 2024, Volume and Issue: 18(13), P. 9365 - 9377

Published: March 22, 2024

The emerging field of wearable electronics requires power sources that are flexible, lightweight, high-capacity, durable, and comfortable for daily use, which enables extensive use in electronic skins, self-powered sensing, physiological health monitoring. In this work, we developed the core–shell biocompatible Cs2InCl5(H2O)@PVDF-HFP nanofibers (CIC@HFP NFs) by one-step electrospinning assisted self-assembly method triboelectric nanogenerators (TENGs). By adopting lead-free Cs2InCl5(H2O) as an inducer, CIC@HFP NFs exhibited β-phase-enhanced self-aligned nanocrystals within uniaxial direction. interface interaction was further investigated experimental measurements molecular dynamics, revealed hydrogen bonds between PVDF-HFP induced automatically well-aligned dipoles stabilized β-phase NFs. TENG fabricated using nylon-6,6 significant improvement output voltage (681 V), current (53.1 μA) peak density (6.94 W m–2), with highest reported performance among TENGs based on halide-perovskites. energy harvesting monitoring were substantiated human motions, showcasing its ability to charge capacitors effectively operate such commercial LEDs, stopwatches, calculators, demonstrating promising application biomechanical sensing.

Language: Английский

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