Piezoelectric nanogenerator based on electrospun cellulose acetate/nanocellulose crystal composite membranes for energy harvesting application

Chemical Research in Chinese Universities

Piezoelectric nanogenerator based on electrospun cellulose acetate/nanocellulose crystal composite membranes for energy harvesting application

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 20wt% 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.

Alan G. MacDiarmid Institute, Jilin University, Changchun 130012, PR China

Published:2021-07-05
Contact: Wang Ce E-mail:cwang@jlu.edu.cn

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Piezoelectric nanogenerator based on electrospun cellulose acetate/nanocellulose crystal composite membranes for energy harvesting application

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