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Waving potential in graphene

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  • Jun Yin

    (State Key Laboratory of Mechanics and Control of Mechanical Structures, The Key Laboratory of Intelligent Nano Materials and Devices of DoE, Institute of Nano Science, Nanjing University of Aeronautics and Astronautics)

  • Zhuhua Zhang

    (State Key Laboratory of Mechanics and Control of Mechanical Structures, The Key Laboratory of Intelligent Nano Materials and Devices of DoE, Institute of Nano Science, Nanjing University of Aeronautics and Astronautics)

  • Xuemei Li

    (State Key Laboratory of Mechanics and Control of Mechanical Structures, The Key Laboratory of Intelligent Nano Materials and Devices of DoE, Institute of Nano Science, Nanjing University of Aeronautics and Astronautics)

  • Jin Yu

    (State Key Laboratory of Mechanics and Control of Mechanical Structures, The Key Laboratory of Intelligent Nano Materials and Devices of DoE, Institute of Nano Science, Nanjing University of Aeronautics and Astronautics)

  • Jianxin Zhou

    (State Key Laboratory of Mechanics and Control of Mechanical Structures, The Key Laboratory of Intelligent Nano Materials and Devices of DoE, Institute of Nano Science, Nanjing University of Aeronautics and Astronautics)

  • Yaqing Chen

    (State Key Laboratory of Mechanics and Control of Mechanical Structures, The Key Laboratory of Intelligent Nano Materials and Devices of DoE, Institute of Nano Science, Nanjing University of Aeronautics and Astronautics)

  • Wanlin Guo

    (State Key Laboratory of Mechanics and Control of Mechanical Structures, The Key Laboratory of Intelligent Nano Materials and Devices of DoE, Institute of Nano Science, Nanjing University of Aeronautics and Astronautics)

Abstract

Nanoscale materials offer much promise in the pursuit of high-efficient energy conversion technology owing to their exceptional sensitivity to external stimulus. In particular, experiments have demonstrated that flowing water over carbon nanotubes can generate electric voltages. However, the reported flow-induced voltages are in wide discrepancy and the proposed mechanisms remain conflictive. Here we find that moving a liquid–gas boundary along a piece of graphene can induce a waving potential of up to 0.1 V. The potential is proportional to the moving velocity and the graphene length inserted into ionic solutions, but sharply decreases with increasing graphene layers and vanishes in other materials. This waving potential arises from charge transfer in graphene driven by a moving boundary of an electric double layer between graphene and ionic solutions. The results reveal a unique electrokinetic phenomenon and open prospects for functional sensors, such as tsunami monitors.

Suggested Citation

  • Jun Yin & Zhuhua Zhang & Xuemei Li & Jin Yu & Jianxin Zhou & Yaqing Chen & Wanlin Guo, 2014. "Waving potential in graphene," Nature Communications, Nature, vol. 5(1), pages 1-6, May.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms4582
    DOI: 10.1038/ncomms4582
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    Cited by:

    1. Xu Xin & Youzi Zhang & Ruiling Wang & Yijin Wang & Peng Guo & Xuanhua Li, 2023. "Hydrovoltaic effect-enhanced photocatalysis by polyacrylic acid/cobaltous oxide–nitrogen doped carbon system for efficient photocatalytic water splitting," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    2. Chang, Chih-Chang & Huang, Wei-Hao & Mai, Van-Phung & Tsai, Jia-Shiuan & Yang, Ruey-Jen, 2021. "Experimental investigation into energy harvesting of NaCl droplet flow over graphene supported by silicon dioxide," Energy, Elsevier, vol. 229(C).
    3. Jiao, Shipu & Li, Yang & Li, Jingyu & Zhang, Yihao & Maryam, Bushra & Xu, Shuo & Liu, Miao & Li, Jiaxuan & Liu, Wanxin & Liu, Xianhua, 2024. "Water-enabled electricity generation on film structures: From materials to applications," Renewable and Sustainable Energy Reviews, Elsevier, vol. 199(C).
    4. Jin Tan & Sunmiao Fang & Zhuhua Zhang & Jun Yin & Luxian Li & Xiang Wang & Wanlin Guo, 2022. "Self-sustained electricity generator driven by the compatible integration of ambient moisture adsorption and evaporation," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    5. Yong Zhang & Tingting Yang & Kedong Shang & Fengmei Guo & Yuanyuan Shang & Shulong Chang & Licong Cui & Xulei Lu & Zhongbao Jiang & Jian Zhou & Chunqiao Fu & Qi-Chang He, 2022. "Sustainable power generation for at least one month from ambient humidity using unique nanofluidic diode," Nature Communications, Nature, vol. 13(1), pages 1-11, December.
    6. Puying Li & Yajie Hu & Wenya He & Bing Lu & Haiyan Wang & Huhu Cheng & Liangti Qu, 2023. "Multistage coupling water-enabled electric generator with customizable energy output," Nature Communications, Nature, vol. 14(1), pages 1-9, December.

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