Nano Research

, Volume 11, Issue 8, pp 4313–4322 | Cite as

Flexible self-charging power units for portable electronics based on folded carbon paper

  • Changjie Zhou
  • Yanqin Yang
  • Na Sun
  • Zhen WenEmail author
  • Ping Cheng
  • Xinkai Xie
  • Huiyun Shao
  • Qingqing Shen
  • Xiaoping Chen
  • Yina Liu
  • Zhong Lin WangEmail author
  • Xuhui SunEmail author
Research Article


The urgent demand for portable electronics has promoted the development of high-efficiency, sustainable, and even stretchable self-charging power sources. In this work, we propose a flexible self-charging power unit based on folded carbon (FC) paper for harvesting mechanical energy from human motion and power portable electronics. The present unit mainly consists of a triboelectric nanogenerator (FC-TENG) and a supercapacitor (FC-SC), both based on folded carbon paper, as energy harvester and storage device, respectively. This favorable geometric design provides the high Young’s modulus carbon paper with excellent stretchability and enables the power unit to work even under severe deformations, such as bending, twisting, and rolling. In addition, the tensile strain can be maximized by tuning the folding angle of the triangle-folded carbon paper. Moreover, the waterproof property of the packaged device make it washable, protect it from human sweat, and enable it to work in harsh environments. Finally, the as-prepared self-charging power unit was tested by placing it on the human body to harvest mechanical energy from hand tapping, foot treading, and arm touching, successfully powering an electronic watch. This work demonstrates the impressive potential of stretchable self-charging power units, which will further promote the development of high Young’s modulus materials for wearable/portable electronics.


self-charging power unit stretchable folded carbon paper triboelectric nanogenerator supercapacitor 


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Flexible self-charging power units for portable electronics based on folded carbon paper


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Copyright information

© Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Changjie Zhou
    • 1
  • Yanqin Yang
    • 1
    • 2
  • Na Sun
    • 1
    • 2
  • Zhen Wen
    • 1
    • 2
    Email author
  • Ping Cheng
    • 1
    • 3
    • 4
  • Xinkai Xie
    • 1
  • Huiyun Shao
    • 1
  • Qingqing Shen
    • 1
  • Xiaoping Chen
    • 1
    • 2
  • Yina Liu
    • 6
  • Zhong Lin Wang
    • 3
    • 4
    • 5
    Email author
  • Xuhui Sun
    • 1
    Email author
  1. 1.Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, and Joint International Research Laboratory of Carbon-Based Functional Materials and DevicesSoochow UniversitySuzhouChina
  2. 2.Nantong Textile & Silk Industrial Technology Research InstituteJiangsu Industrial Technology Research Institute of Textile & SilkNantongChina
  3. 3.CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-nano Energy and Sensor, Beijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijingChina
  4. 4.School of Nanoscience and TechnologyUniversity of Chinese Academy of SciencesBeijingChina
  5. 5.School of Materials Science and EngineeringGeorgia Institute of TechnologyAtlantaUSA
  6. 6.Department of Mathematical SciencesXi’an Jiaotong-Liverpool UniversitySuzhouChina

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