Giant Piezoelectric Output and Stability Enhancement in Piezopolymer Composites with Liquid Metal Nanofillers

Liu, Jingyan; Zeng, Shi; Zhang, Mingrui; Xiong, Juan; Gu, Haoshuang; Wang, Zhao; Hu, Yongming; Zhang, Xianghui; Du, Yi; Ren, Long

doi:10.1002/advs.202304096

Cited by 8 publications

(2 citation statements)

References 61 publications

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“…(2) Conductive materials: materials like MWCTs, CB, and Ag-NWs facilitate the movement of carriers within the composites, concurrently reducing volume internal resistance. (3) Highly deformable nanodroplets: nanodroplets characterized by high deformability, such as liquid gallium (Ga) [ 90 ] and 1H,1H,2H,2H-perfluorodecyltriethoxysilane (PFOES) [ 91 , 92 ], play a crucial role in promoting the internal stress transfer within the composites.…”

Section: Dielectric Polymers For Environment-induced Power Generationmentioning

confidence: 99%

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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: Dielectric Polymers For Environment-induced Power Generationmentioning

confidence: 99%

“…(3) Highly deformable nanodroplets: nanodroplets characterized by high deformability, such as liquid gallium (Ga) [90] and 1H,1H,2H,2H-perfluorodecyltriethoxysilane (PFOES) [91,92], play a crucial role in promoting the internal stress transfer within the composites.…”

Section: Dielectric Polymers For Environment-induced Power Generationmentioning

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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An Easy Nanopatch Promotes Peripheral Nerve Repair through Wireless Ultrasound‐Electrical Stimulation in a Band‐Aid‐Like Way

Liu,

Zhang,

Zhao

et al. 2024

Adv Funct Materials

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Low‐intensity pulsed ultrasound (LIPUS) and electrical stimulation (ES) are effective methods that promote neural repair. However, ES usually requires electrode implantation and a power supply, which are an inconvenience to future applications. Meanwhile, it is difficult to combine ultrasound and ES through traditional methods. Herein, a nanopatch consisting of an oriented barium titanate (BTO)‐incorporated polycaprolactone (PCL) nanofiber membrane for electricity generation and a layer of graphene oxide (GO)‐doped gelatin methacryloyl (GelMA) for neural interaction is developed. This band‐aid‐like BTO@PCL/GO@GelMA nanopatch has an excellent piezoelectric performance. In vitro, the nanopatches significantly promote axonal growth under LIPUS treatment. In a rat model of erectile dysfunction caused by peripheral nerve injury, the nanopatch is easily attached to a damaged nerve similar to a band‐aid. With the assistance of ultrasound, some mechanical energy is converted into electricity by the nanopatch, and synergistic neural stimulation of ultrasound and electricity is achieved. In this way, the nanopatch significantly promoted corpus cavernosum nerve repair, resulting in the improvement of tissue structure and erectile function as well as increased conception rate in female rats. In conclusion, the nanopatch offers a synergistic ultrasound‐ES for nerve repair easily and represents a novel strategy for peripheral nerve repair.

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Advanced Materials for Energy Harvesting and Soft Robotics: Emerging Frontiers to Enhance Piezoelectric Performance and Functionality

Persano,

Camposeo,

Matino

et al. 2024

Advanced Materials

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Piezoelectric energy harvesting captures mechanical energy from a number of sources, such as vibrations, the movement of objects and bodies, impact events, and fluid flow to generate electric power. Such power can be employed to support wireless communication, electronic components, ocean monitoring, tissue engineering, and biomedical devices. A variety of self‐powered piezoelectric sensors, transducers, and actuators have been produced for these applications, however approaches to enhance the piezoelectric properties of materials to increase device performance remain a challenging frontier of materials research. In this regard, the intrinsic polarization and properties of materials can be designed or deliberately engineered to enhance the piezo‐generated power. This review provides insights into the mechanisms of piezoelectricity in advanced materials, including perovskites, active polymers, and natural biomaterials, with a focus on the chemical and physical strategies employed to enhance the piezo‐response and facilitate their integration into complex electronic systems. Applications in energy harvesting and soft robotics are overviewed by highlighting the primary performance figures of merits, the actuation mechanisms, and relevant applications. Key breakthroughs and valuable strategies to further improve both materials and device performance are discussed, together with a critical assessment of the requirements of next‐generation piezoelectric systems, and future scientific and technological solutions.

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Giant Piezoelectric Output and Stability Enhancement in Piezopolymer Composites with Liquid Metal Nanofillers

Cited by 8 publications

References 61 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

An Easy Nanopatch Promotes Peripheral Nerve Repair through Wireless Ultrasound‐Electrical Stimulation in a Band‐Aid‐Like Way

Advanced Materials for Energy Harvesting and Soft Robotics: Emerging Frontiers to Enhance Piezoelectric Performance and Functionality

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