Simple enhanced charge density of chitosan film by the embedded ion method for the flexible triboelectric nanogenerator

This research proposed a simple ionic embedded method to improve electrical output performance by adding surface charges of cationic chitosan (CS) biopolymer for compatible utilization of the triboelectric nanogenerator (TENG). By simply embedding cationic salts, the TENG performance was enhanced by over four times more than that with pristine CS. Moreover, by modifying roughness on the film surface, the optimized condition of R-CS/3 %CaCl2 reached the highest V-OC and I-SC of similar to 149 V and similar to 15 mu A, respectively, thus exceeding the output from pristine R-CS TENG by four- and three times of similar to 38 V and similar to 5.1 mu A. The maximum power output of 400 tO/V/cm(2) can be observed at the 10 M Omega external load resistance. Finally, by integrating an automatic self-charge pumping (ASCP) module, the ASCP/CS-TENG provided highly efficient V-OC and I(SC )output power by over 1.3 times more than the R-CS/3 %CaCl2 TENG and could light up 72 light emitting diodes (LEDs) easily.

Automated summary

This research proposed a simple method to improve the performance of TENG by adding cationic salts. The optimized condition showed higher output power than the original TENG and could light up more LED lights.