การปรับปรุงประสิทธิภาพการส่งออกทางไฟฟ้าของพอลิไดเมทิลไซลอกเซนด้วยการเติมวัสดุไดอิเล็กทริกชนิดโคโลซอลสำหรับผลิตอุปกรณ์ผลิตพลังงานไฟฟ้าขนาดเล็กไทรโบอิเล็กทริกแบบยืดหยุ่น

Abstract

In recent years, the triboelectric nanogenerators (TENG) that can convert mechanical energy into electricity from the electrostaticity have been greatly developed for utilizing as a power source for portable and wearable electronic devices. This research develops the TENG byusing polydimethylsiloxane (PDMS) as the primary contact layer and improve its efficiency by adding the dielectric and colossal dielectric materials of oxides and perovskite complex oxides, including the R2O3 and RFeO3; where R is Lanthanum (La) , Samarium (Sm) , and Neodymium (Nd) respectively. The change in ratios was studied at 0.5, 2.5, 5, and 10% wt, respectively. According to the results, the composite films show high flexibility for all types of fillers and compositions. The phase purity and crystal structure can be confirmed by IR and XRD.The morphology and distribution of the filler phase were examined viaScanning Electron Microscope(SEM) and Synchrotron X-ray tomographic microscopy (SR-XTM) showed favorable distribution of R2O3 and RFeO3 within the PDMS matrix. And the efficiency of the electrical output was examined. It was found that PDMS/Sm2O3 at 5 % wt had the highest output efficiency for voltage and current by ~ 68V and ~ 66.4 nA. The PDMS/LaFeO3 at 10 % wt can provide highest output efficiency for voltage and current by ~ 75 V and ~ 164 nA with the maximum output power of ~ 1,990 μW that can ligh up 60 LEDs. Moreover, the PDMS/LaFeO3 in optimum condition can be used to powerup the gobal positioning system (GPS) insidethe shoe's insole. The researcher believe that it will be useful to develop a group of mechanical energy harvesting device for portable and wearable electronics in future.