High‐Performance Fully Stretchable Moist‐Electric Generator

Wen, Xian; Sun, Zhaoyang; Xie, Xinyao; Zhou, Qun; Liu, Huijie; Wang, Liming; Qin, Xiaohong; Tan, Swee Ching

doi:10.1002/adfm.202311128

Cited by 13 publications

(2 citation statements)

References 55 publications

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“…( c ) ThermoENG using thermal energy: it is used to manufacture self-powered sensors [ 29 ] and wearable devices [ 30 ]. Using chemical potential energy: ( d ) OPNG: used to collect energy between different concentrations of liquids [ 31 ] and promote in vitro drug delivery [ 32 ], ( e ) MENG: used to collect human respiration [ 33 ] and humidity energy in the environment to charge smartphones [ 34 ].…”

Section: Figurementioning

confidence: 99%

A Review of Polymer-Based Environment-Induced Nanogenerators: Power Generation Performance and Polymer Material Manipulations

Xie,

Yan,

2024

Polymers

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Natural environment hosts a considerable amount of accessible energy, comprising mechanical, thermal, and chemical potentials. Environment-induced nanogenerators are nanomaterial-based electronic chips that capture environmental energy and convert it into electricity in an environmentally friendly way. Polymers, characterized by their superior flexibility, lightweight, and ease of processing, are considered viable materials. In this paper, a thorough review and comparison of various polymer-based nanogenerators were provided, focusing on their power generation principles, key materials, power density and stability, and performance modulation methods. The latest developed nanogenerators mainly include triboelectric nanogenerators (TriboENG), piezoelectric nanogenerators (PENG), thermoelectric nanogenerators (ThermoENG), osmotic power nanogenerator (OPNG), and moist-electric generators (MENG). Potential practical applications of polymer-based nanogenerator were also summarized. The review found that polymer nanogenerators can harness a variety of energy sources, with the basic power generation mechanism centered on displacement/conduction currents induced by dipole/ion polarization, due to the non-uniform distribution of physical fields within the polymers. The performance enhancement should mainly start from strengthening the ion mobility and positive/negative ion separation in polymer materials. The development of ionic hydrogel and hydrogel matrix composites is promising for future nanogenerators and can also enable multi-energy collaborative power generation. In addition, enhancing the uneven distribution of temperature, concentration, and pressure induced by surrounding environment within polymer materials can also effectively improve output performance. Finally, the challenges faced by polymer-based nanogenerators and directions for future development were prospected.

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Section: Figurementioning

confidence: 99%

A Review of Polymer-Based Environment-Induced Nanogenerators: Power Generation Performance and Polymer Material Manipulations

Xie,

Yan,

2024

Polymers

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“…For example, many triboelectric generators have been integrated with commercialised fabrics to harvest energy from human motion and wind via contact-electrification and electronic induction [130,131]. Recently, emerging moist electric generators that harvest energy from atmospheric moisture have attracted great attention in self-powered textiles [132]. Besides, thermoelectric generators that harvest energy from waste heat have been combined with fabric platforms [133].…”

Section: Integrated Microelectronic Systemmentioning

confidence: 99%

Advanced Design of Fibrous Flexible Actuators for Smart Wearable Applications

Fang,

Xu,

et al. 2024

Adv. Fiber Mater.

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Smart wearables equipped with integrated flexible actuators possess the ability to autonomously respond and adapt to changes in the environment. Fibrous textiles have been recognised as promising platforms for integrating flexible actuators and wearables owing to their superior body compliance, lightweight nature, and programmable architectures. Various studies related to textile actuators in smart wearables have been recently reported. However, the review focusing on the advanced design of these textile actuator technologies for smart wearables is lacking. Herein, a timely and thorough review of the progress achieved in this field over the past five years is presented. This review focuses on the advanced design concepts for textile actuators in smart wearables, covering functional materials, innovative architecture configurations, external stimuli, and their applications in smart wearables. The primary aspects focus on actuating materials, formation techniques of textile architecture, actuating behaviour and performance metrics of textile actuators, various applications in smart wearables, and the design challenges for next-generation smart wearables. Ultimately, conclusive perspectives are highlighted. Graphical Abstract

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Ambient Moisture‐Driven Self‐Powered Iontophoresis Patch for Enhanced Transdermal Drug Delivery

Ge,

Guo,

Tao

et al. 2024

Adv Healthcare Materials

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Iontophoretic transdermal drug delivery (TDD) devices are known to enhance the transdermal transport of drugs. However, conventional transdermal iontophoretic devices require external power sources, wired connections, or mechanical parts, which reduce the comfort level for patients during extended use. In this work, a self‐powered, wearable transdermal iontophoretic patch (TIP) is proposed by harvesting ambient humidity for energy generation, enabling controlled TDD. This patch primarily uses moist‐electric generators (MEGs) as its power source, thus obviating the need for complex power management modules and mechanical components. A single MEG unit can produce an open‐circuit voltage of 0.80 V and a short‐circuit current of 11.65 µA under the condition of 80% relative humidity. Amplification of the electrical output is feasible by connecting multiple generator units in series and parallel, facilitating the powering of certain commercial electronic devices. Subsequently, the MEG array is integrated with the TDD circuit to create the wearable TIP. After 20 min of application, the depth of drug penetration through the skin is observed to increase threefold. The effective promotion effect of TIP on the transdermal delivery of ionized drugs is corroborated by simulations and experiments. This wearable TIP offers a simple, noninvasive solution for TDD.

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High‐Performance Fully Stretchable Moist‐Electric Generator

Cited by 13 publications

References 55 publications

A Review of Polymer-Based Environment-Induced Nanogenerators: Power Generation Performance and Polymer Material Manipulations

A Review of Polymer-Based Environment-Induced Nanogenerators: Power Generation Performance and Polymer Material Manipulations

Advanced Design of Fibrous Flexible Actuators for Smart Wearable Applications

Ambient Moisture‐Driven Self‐Powered Iontophoresis Patch for Enhanced Transdermal Drug Delivery

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