Chemical Research in Chinese Universities ›› 2022, Vol. 38 ›› Issue (4): 1005-1011.doi: 10.1007/s40242-021-1252-x

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Piezoelectric Nanogenerator Based on Electrospun Cellulose Acetate/Nanocellulose Crystal Composite Membranes for Energy Harvesting Application

SUN Bolun, CHAO Danming, WANG Ce   

  1. Alan G. MacDiarmid Institute, Jilin University, Changchun 130012, P. R. China
  • Received:2021-06-22 Revised:2021-08-20 Online:2022-08-01 Published:2022-07-01
  • Contact: WANG Ce E-mail:cwang@jlu.edu.cn
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (No.21875084).

Abstract: Nanogenerators, as the typical conversion of mechanical energy to electrical energy devices, have great potential in the application of providing sustainable energy sources for powering miniature devices. In this work, cellulose acetate/cellulose nanocrystal(CA/CNC) composite nanofiber membranes were prepared by electrospinning method and then utilized to manufacture a flexible pressure-driven nanogenerator. The addition of CNC not only increased the content of piezoelectric cellulose I crystallization but also strengthened the mechanical deformation of the nanofiber membranes, which could greatly enhance the piezoelectric performance of CA/CNC composite membranes. The CA/CNC composite nanofiber membrane with 20%(mass fraction) of CNC(CA/CNC-20%) showed optimal piezoelectric conversion performance with the output voltage of 1.2 V under the force of 5 N(frequency of 2 Hz). Furthermore, the output voltage of the CA/CNC-20% nanogenerator device exhibited a linear relationship with applied impact force, indicating the great potential in pressure sensors.

Key words: Piezoelectric, Nanogenerator, Electrospinning, Cellulose acetate, Nanocellulose crystal