Covalent Organic Frameworks with Tailored Functionalities for Modulating Surface Potentials in Triboelectric Nanogenerators

Lin, Chao; Sun, Linhai; Meng, Xutong; Yuan, Xin; Cui, Cheng‐Xing; Qiao, Huan; Chen, Pengjing; Cui, Siwen; Zhai, Lipeng; Mi, Liwei

doi:10.1002/anie.202211601

Cited by 44 publications

(17 citation statements)

References 43 publications

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“…The actuator generates mechanical motions by means of environment stimuli, showing spontaneity to trigger the triboelectric effect. PVP/PAA nanofibers-network loaded MIL-88A delivers high surface roughness and electron trapping ability, which could effectively improve the triboelectric performance. ,, To achieve the T-HRA with self-powered perception capability, we systematically evaluated the triboelectric performance of T-PPMs with different contents of MIL-88A, at the relatively low ambient humidity of RH = 35–40%, to largely avoid the interference of humidity on the triboelectric output. The T-PPM-based single electrode TENG has the same device structure with T-HRA; herein, the T-PPM acts as the triboelectric active layer and the conductive fabric serves as the electrode for collecting electricity (Figure a).…”

Section: Resultsmentioning

confidence: 99%

Breathable Metal–Organic Framework Enhanced Humidity-Responsive Nanofiber Actuator with Autonomous Triboelectric Perceptivity

Zhou,

Zhang,

Zhang

et al. 2023

ACS Nano

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Autonomous object manipulation and perception with environmental factor-triggered and self-powered actuation is one of the most attractive directions for developing nextgeneration soft robotics with a smart human-machine-environment interface. Humidity, as a sustainable energy source ubiquitous in the surrounding environment, can be used for triggering smart grippers. In this work, it is proposed that by contacts between the gripper and objects upon humidityinduced actuation, real-time distinguishable triboelectric signals can be generated to realize the humidity-driven object manipulation and identification. Herein, a thermo-modified electrospun polyvinylpyrrolidone/poly(acrylic acid)/MIL-88A (T-PPM) nanofibrous film with micro-to-nano cross-scale porosity is developed, and a bilayer humidity-responsive actuator (T-HRA) was designed, mimicking the tamariskoid spikemoss to enhance the humidity-driven actuation. The breathing effect of MIL-88A and hierarchical porous structure of the T-PPM facilitate moisture diffusion and offer huge actuation (2.41 cm −1 ) with a fast response (0.084 cm −1 s −1 ). For autonomous object manipulation perception, T-PPM was verified as a tribo-positive material located between paper and silk. Accordingly, the T-HRA was demonstrated as a smart soft gripper that generates a different electric signal upon contact with objects of different material. This work proposes a concept of soft robots that are interactive with the environment for both autonomous object manipulation and information acquisition.

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Section: Resultsmentioning

confidence: 99%

Breathable Metal–Organic Framework Enhanced Humidity-Responsive Nanofiber Actuator with Autonomous Triboelectric Perceptivity

Zhou,

Zhang,

Zhang

et al. 2023

ACS Nano

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“…6d), and then composited as fillers in PVDF as a tribo-layer. 137 With the strong electron-withdrawing ability of 4F-groups, 4F-COF has increased charge-trapping sites and electron affinity (Fig. 6e), and consequently has the most negative property and maximum power density (2858 mW m À2 ) compared with other COFs.…”

Section: Covalent Organic Framework (Cofs) As Triboelectric Polymersmentioning

confidence: 99%

Design and synthesis of triboelectric polymers for high performance triboelectric nanogenerators

Tao

Chen

Wang

2023

Energy Environ. Sci.

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“…[51] In this regard, as previously reported that modification of polymer films with different functional groups can significantly modulate their triboelectric properties to achieve enhanced performance TENGs. [52][53][54][55] Thus, COFs with such tunable properties show great potential in fabricating high-performance TENGs to further promote their widespread application and may also deepen our understanding of the essential mechanism of triboelectrification.…”

Section: Introductionmentioning

confidence: 99%

Fluorinated Covalent Organic Framework as a Positive Tribo‐Material for High‐Performance Triboelectric Nanogenerators

Shi

Kale

Tian

et al. 2023

Adv Funct Materials

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Along with the increasingly wide application of intelligent electronics, triboelectric nanogenerator (TENG), as a promising sustainable micro-power source has attracted considerable attention recently. However, most of the reported research focuses on negative triboelectric materials, while research on alternative positive tribo-layers is still limited. In this study, a new highly fluorinated covalent organic framework (COF) Tp-TFAB is successfully synthesized and utilized as positive triboelectric materials for high-performance TENGs. Unusually, compared with the non-fluorinated Tp-TAPB COF, both the pristine Tp-TFAB COF and corresponding hybrid films with polyvinyl alcohol (PVA) based TENGs demonstrate much higher triboelectric performance. Especially, a PVC-PVA/FTC TENG composed of polyvinyl chloride (PVC) and hybrid PVA/Tp-TFAB (PVA/FTC) films reveal much superior triboelectric performance with a short-circuit current density of 26.34 mA m −2 , a transferred charge density of 148.5 µC m −2 , and a maximum peak power density of 8.24 W m −2 , nearly six times higher than that of the PVC-PVA TENG. Detailed investigations revealed that the fluorinated Tp-TFAB COF has enhanced electron donating ability, which significantly boosts the triboelectric output of TENGs. This study provides an effective strategy of chemically designing and synthesizing new alternative triboelectric materials, which will pave the way to significantly enhance the triboelectric performance of TENGs.

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Covalent Organic Frameworks with Tailored Functionalities for Modulating Surface Potentials in Triboelectric Nanogenerators

Cited by 44 publications

References 43 publications

Breathable Metal–Organic Framework Enhanced Humidity-Responsive Nanofiber Actuator with Autonomous Triboelectric Perceptivity

Breathable Metal–Organic Framework Enhanced Humidity-Responsive Nanofiber Actuator with Autonomous Triboelectric Perceptivity

Design and synthesis of triboelectric polymers for high performance triboelectric nanogenerators

Fluorinated Covalent Organic Framework as a Positive Tribo‐Material for High‐Performance Triboelectric Nanogenerators

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