Flexible iontronics based on 2D nanofluidic material

Wei, Di; Yang, Feiyao; Jiang, Zhuoheng; Wang, Zhong Lin

doi:10.1038/s41467-022-32699-x

Cited by 36 publications

(16 citation statements)

References 57 publications

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“…Such Raman spectral feature of carbon film has been proved to be induced by the existence of graphene sheets. [ 29 ] The absence of 2D peak in the spectrum indicates there is no graphene sheets in the a‐C film.…”

Section: Resultsmentioning

confidence: 99%

An Electrode‐Grounded Droplet‐Based Electricity Generator (EG‐DEG) for Liquid Motion Monitoring

Yang

Guo

et al. 2023

Adv Funct Materials

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Triboelectric nanogenerator (TENG) is a potential technology for harvesting water energy and serving as self‐powered sensors. Among the innovative designs of TENG, a droplet‐based electricity generator (DEG) has achieved high instantaneous power density under droplets impinging. However, the exposed top electrode is usually hydrophilic and subjected to water corrosion. This study reports an electrode‐grounded droplet‐based electricity generator (EG‐DEG) with graphene sheets embedded carbon (GSEC) electrode. Compared with traditional electrodes, the designed device with GSEC electrode exhibits great hydrophobicity, corrosion resistance under droplets impinging and better output performance. The working mechanism of the device is discussed in depth and the performance of EG‐DEG is systematically studied. To demonstrate the robust capability of EG‐DEG as self‐powered sensors, a three‐electrodes mode of EG‐DEG is developed to monitor droplet velocities on different triboelectric surfaces. Furthermore, the EG‐DEG can be assembled in the pipe to acquire the flow rate of fluid according to the frequency of the output signals. An intelligent system is further developed to display the flow rate of the fluid. Therefore, the EG‐DEG device also shows its great application prospects in particles detection and fluid analysis in the future.

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Section: Resultsmentioning

confidence: 99%

An Electrode‐Grounded Droplet‐Based Electricity Generator (EG‐DEG) for Liquid Motion Monitoring

Yang

Guo

et al. 2023

Adv Funct Materials

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“…Finally, all three water-based green energy conversion systems can be coupled with storage battery or capacitor. [267,268] Electricity from water-based green energy conversion system is relatively small so far. Produced energy need be further stored, and accumulated large energy is sufficient to complete more extensive applications, or the stored energy can also be transferred into another arid or stricken regions with little water-based green energy for use.…”

Section: Coupling With Other Technologiesmentioning

confidence: 99%

Interfacial Assembly of 2D Graphene‐Derived Ion Channels for Water‐Based Green Energy Conversion

Fan,

Zhou,

Xie

et al. 2023

Advanced Materials

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The utilization of sustained and green energy is believed to alleviate increasing menace of global environmental concerns and energy dilemma. Interfacial assembly of two‐dimensional graphene‐derived ion channels (2D‐GDIC) with tunable ion/fluid transport behavior enables efficient harvesting of renewable green energy from ubiquitous water, especially for osmotic energy harvesting. In this Review, we summarize various interfacial assembly strategies for fabricating diverse 2D‐GDICs and discuss their ion transport properties. We analyze how particular structure and charge density/distribution of 2D‐GDIC can be modulated to minimize internal resistance of ion/fluid transport and enhance energy conversion efficiency, and we highlight stimuli‐responsive functions and stability of 2D‐GDIC and further examine the possibility of integrating 2D‐GDIC with other energy conversion systems. Notably, the presented preparation and applications of 2D‐GDIC also inspire and guide other 2D materials to fabricate sophisticated ion channels for targeted applications. Finally, we analyze potential challenges in this field and offer a prospect to future developments toward high‐performance or large‐scale real‐word applications.This article is protected by copyright. All rights reserved

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“…It is worth mentioning that 1D and 3D membranes have been widely used to fabricate Janus membranes as opposed to 2D membranes. [122][123][124][125] For instance, Gao et al [126] prepared Janus membranes with cation selectivity by combining negatively charged mesoporous carbon (pore size ≈7 nm) and positively charged macroporous alumina (pore size ≈80 nm). The mesoporous carbon can be used as a selective layer for ions due to its small pore size, while the macroporous alumina acts as an ion transport layer to accelerate ion transport.…”

Section: Concentration Cellsmentioning

confidence: 99%

“…It is worth mentioning that 1D and 3D membranes have been widely used to fabricate Janus membranes as opposed to 2D membranes. [ 122–125 ] For instance, Gao et al. [ 126 ] prepared Janus membranes with cation selectivity by combining negatively charged mesoporous carbon (pore size ≈7 nm) and positively charged macroporous alumina (pore size ≈80 nm).…”

Section: Applications Of Surface Charge‐modified 2d Nanofluidic Membr...mentioning

confidence: 99%

Surface Charge Modification on 2D Nanofluidic Membrane for Regulating Ion Transport

Xie

Tang

Qin

et al. 2022

Adv Funct Materials

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2D nanofluidic membranes are capable of regulating ion transport toward various applications concerning energy and environment, which is primarily contributed by the excess charge on the interior surface of narrow nanoscale pores. However, there is still a lack of comprehensive summaries and discussions on the surface charge modification principles and strategies of 2D nanofluidic membranes, as well as the practical applications of charge‐modified 2D nanofluidic membranes for regulating ion transport. In this review, the surface charge modification principles and charge modification methods of 2D nanofluidic membranes are first introduced in detail, which is of great significance for improving the ion regulation capability of membranes and realizing the design of nanochannel materials. Next, recent advances in the two typical applications of concentration cells and water treatment based on charge‐modified 2D nanofluidic membranes are summarized. Finally, some challenges and prospects related to charge‐modified 2D nanofluidic membranes are discussed to indicate directions for future research in this field. It is anticipated that this review will provide valuable strategies for the development of high‐performance charge‐modified 2D nanofluidic membranes toward energy and environment applications.

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Flexible iontronics based on 2D nanofluidic material

Cited by 36 publications

References 57 publications

An Electrode‐Grounded Droplet‐Based Electricity Generator (EG‐DEG) for Liquid Motion Monitoring

An Electrode‐Grounded Droplet‐Based Electricity Generator (EG‐DEG) for Liquid Motion Monitoring

Interfacial Assembly of 2D Graphene‐Derived Ion Channels for Water‐Based Green Energy Conversion

Surface Charge Modification on 2D Nanofluidic Membrane for Regulating Ion Transport

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