Mechanistic insight into electricity generation from moving ionic droplets on graphene

Zhang, Zhuhua; Guo, Wei

doi:10.1007/s40843-020-1615-x

Cited by 21 publications

(15 citation statements)

References 41 publications

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“…The electric triple layer can well describe the dynamics of coupled ions and electrons at the water/Gr/substrate interface and further quantify the electrical current in graphene. 21 Experimentally, this mechanism was confirmed by measuring the potential distribution in graphene during the dynamic process. After fully immersing graphene in liquids (here, C 1 = C 2 = Á Á Á = C n ), the system reached equilibrium state and the voltage vanished.…”

Section: Mechanismmentioning

confidence: 74%

Hydrovoltaic technology: from mechanism to applications

et al. 2022

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Section: Mechanismmentioning

confidence: 74%

Hydrovoltaic technology: from mechanism to applications

et al. 2022

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“…MD simulations performed by Kwon et al 272 have shown that the EDL structure of graphene on a hydrophobic substrate is disordered, originating from the destruction of water dipole assemblies. Recently, Zhang et al 273 performed a multi‐scale analysis on the mechanism of electricity generation from moving ionic droplets on graphene. They found an electric triple layer (ETL) (consist of an ion layer fixed on graphene, an image charge layer in graphene and a counterion layer in water) formed at the water/graphene/substrate interface, due to the attraction of ions in water by substrate dipoles drives charge redistribution in graphene.…”

Section: Simulations For the Applications Of Nanofluidicsmentioning

confidence: 99%

Multiscale simulations of nanofluidics: Recent progress and perspective

Xie

2023

WIREs Comput Mol Sci

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Nanofluidics research has achieved a significant growth over the past few years. New phenomena of nanoscaled fluid flows are being reported continuously, such as altered liquid properties, fast flows, and ion rectification, which attract tremendous research interests in many fields, such as membrane science, biological nanochips, and energy conventions. Multiscale simulations, covering quantum mechanics, molecular mechanics, coarse‐grained particle dynamics (mesoscale), and continuum mechanics, have shown their great advantages in studying the new frontier of nanofluidics in academia and industry, which is in range of 1–1000 nm scale. These simulations provide the opportunity to visualize the nanofluidics applications existed in the minds of scientists and then guide experimental design to realize the potential of nanofluidics applications in industrial. In this article, we attempt to give a comprehensive review of nanofluidics from the aspect of multiscale simulations. The methodology and role of various simulation methods used in the investigation of nanofluidics are presented. The properties and characteristics of nanofluidics are summarized. The applications of nanofluidics in recent years are emphasized. And then the development of simulation methods and the application of nanofluidics are also prospected.This article is categorized under: Molecular and Statistical Mechanics > Molecular Dynamics and Monte‐Carlo Methods Software > Simulation Methods

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“…[35,36] Then Zhang et al proposed an electric triple layer in which an image charge layer in graphene was considered to couple with the EDL. [37] These novel discoveries have pushed forward the development of the century-old electrokinetic effect.…”

Section: Mechanisms Of Electricity Generationmentioning

confidence: 99%

Materials for evaporation‐driven hydrovoltaic technology

Zheng

Chu

Fang

et al. 2022

Interdisciplinary Materials

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Water constitutes the largest energy carrier on earth, absorbing more than 70% of the solar energy received by the earth's surface, yet its low exploitation has been a constant concern. The hydrovoltaic effect is an emerging technology that generates electricity through the direct interaction between nanomaterials and water of various forms (raindrops, waves, flows, moisture, and natural evaporation). Especially, the evaporation-driven hydrovoltaic effect is a spontaneous and ubiquitous process that can directly convert thermal energy from the surrounding environment into electricity without the demand for additional mechanical work, which shows unique advantages compared with other hydrovoltaic effects. A variety of nanostructured materials have been steadily developed for evaporation-driven hydrovoltaic devices (EHDs) in recent years. However, there has been a lack of a clear specification on the selection and design of materials for improving device performance. Herein, we first analyze the mechanisms of EHDs followed by a summarization of the recent advances in materials, including carbon materials, biomass-based materials, metal oxides, composite materials, and others. We then discuss the strategies for improving the energy conversion efficiency and the output power in terms of structural design, surface modification, and interface treatment. Finally, we provide an outlook on the potential applications of electricity generation, sensors, and desalination technology, as well as the challenges and prospects for the development of this emerging technology in the future.

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Mechanistic insight into electricity generation from moving ionic droplets on graphene

Cited by 21 publications

References 41 publications

Hydrovoltaic technology: from mechanism to applications

Hydrovoltaic technology: from mechanism to applications

Multiscale simulations of nanofluidics: Recent progress and perspective

Materials for evaporation‐driven hydrovoltaic technology

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