Biomass-derived multifunctional 3D film framed by carbonized loofah toward flexible strain sensors and triboelectric nanogenerators

The development of flexible and adaptable multifunctional sensing systems for human–machine interaction, especially for animal voice‐emotion identification, is highly desirable yet quite challenging. Herein, a multifunctional triboelectric nanogenerator (TENG) based on ordered hierarchical microhump arrays is proposed and fabricated by template‐assisted electrospinning with a facile, low‐cost, and expandable manufacturing process. Performances of a single‐electrode TENG based on the patterned nanofiber films with microhump arrays (NFM‐TENG) are studied in detail by varying mesh number of the template. Electric field structure of the collector is altered by pore sizes, wire diameters, and protrusions of the receiving templates subjected to different mesh numbers, generating different degrees of microhump arrays on the surface of the nanofiber film. NFM‐TENG demonstrates high sensitivity (15.94 mV Pa−1), fast response and recovery time (76 and 58 ms), a large power density of 122 mW m−2, and excellent ability of structural retention. Integrated with four functions of energy harvesting, pressure sensing, human physiological sensing, and animal voice‐emotion identification, NFM‐TENG achieves real‐time monitoring of human physiological, motion, handwriting, and animal voice‐emotion signals without an external power supply. This study shows significant application strategies for self‐powered human–machine interaction devices, novel animal voice‐emotion identification, biodiversity conservation, and so on.

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“…NFM-50-TENG performs well in sensitivity, flexibility, and V oc , as shown in Figure 4i; Table S2, Supporting Information. [64][65][66][67][68]…”

Section: Nfm-50-teng For Energy Harvestingmentioning

confidence: 99%

Template‐Assisted Electrospun Ordered Hierarchical Microhump Arrays‐Based Multifunctional Triboelectric Nanogenerator for Tactile Sensing and Animal Voice‐Emotion Identification

Cui

Guo

Zhai

et al. 2023

Adv Funct Materials

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“…The triboelectric effect develops when two dielectric layers come into contact and then separate; electrons are transferred from Fig. 1 An overview of TENGs based on WDCM: theory, method, and application 18 (copyright 2023 Elsevier), 19 (copyright 2020 Elsevier), 20 (copyright 2022 American Chemical Society), 21 (copyright 2020 Elsevier), 22 (copyright 2022 Elsevier), 23 (copyright 2021 Elsevier), 24 (copyright 2019 Elsevier), 25 (copyright 2022 Elsevier), 26 (copyright 2017 John Wiley and Sons), 27 (copyright 2022 Elsevier).…”

Section: The Teng Paradigmmentioning

confidence: 99%

“…16(a)). 18 TENGs can harvest wind energy. Carbon electrodes were used to develop a ag-type TENG resistant to high humidity.…”

Section: Energy Harvestingmentioning

confidence: 99%

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Turning trash into treasure: recent advances in triboelectric nanogenerator based on waste-derived carbonized materials

Luo

et al. 2023

J. Mater. Chem. A

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“…[18] TENG has six fundamental working modes. They are 1) contact separation with single electrode, [19,20] 2) contact separation with double electrodes, [21,22] 3) sliding with single electrode, [23] 4) sliding with double electrodes, [24] 5) freestanding with single electrode, [25] and 6) freestanding with double electrodes. [26,27] The materials used for making triboelectric nanogenerators include polymers, metals, organics, and inorganics.…”

Section: Introductionmentioning

confidence: 99%

Synergistic Effect of Dual Surface Modified Ecoflex Polymer for Dynamic Triboelectric Nanogenerator Towards Sustainable Battery‐Free Tally Counter

Basith

Chandrasekhar

2023

Adv Materials Technologies

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Triboelectric nanogenerators (TENGs) scavenge electricity from low‐frequency mechanical motions. This study proposes a simple and cost‐effective method to synthesize a dual‐surface modified Ecoflex polymer (SME Sponge) with a porous inner structure and micro pyramidal projections on its surface. An Ecoflex‐Aluminum‐based contact separation triboelectric nanogenerator (EA‐CS TENG) is fabricated to investigate the impact of pores and micro pyramidal projections on triboelectric performance. The performances are evaluated with and without an air gap between the materials. Despite the gapless responses being lower than those with the air gap, the gapless system demonstrates the capability to charge a 0.1 µF capacitor up to 0.8 V with mechanical forces of 9 N, validating the potential of surface‐modified porous triboelectric materials for gapless TENGs. Additionally, the device with an air gap achieves a charge of 0.1 µF up to 3.3 V with mechanical forces of 9 N. Finally, a completely self‐powered tally counter is employed to verify the powering and sensing applications of EA‐CS TENG with an air gap. This study confirms the feasibility of utilizing low‐cost EA‐CS TENG as a renewable energy source for generating electricity from mechanical motions and driving devices without the need for batteries.

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Biomass-derived multifunctional 3D film framed by carbonized loofah toward flexible strain sensors and triboelectric nanogenerators

Cited by 26 publications

References 59 publications

Template‐Assisted Electrospun Ordered Hierarchical Microhump Arrays‐Based Multifunctional Triboelectric Nanogenerator for Tactile Sensing and Animal Voice‐Emotion Identification

Template‐Assisted Electrospun Ordered Hierarchical Microhump Arrays‐Based Multifunctional Triboelectric Nanogenerator for Tactile Sensing and Animal Voice‐Emotion Identification

Turning trash into treasure: recent advances in triboelectric nanogenerator based on waste-derived carbonized materials

Synergistic Effect of Dual Surface Modified Ecoflex Polymer for Dynamic Triboelectric Nanogenerator Towards Sustainable Battery‐Free Tally Counter

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