การปรับปรุงประสิทธิภาพการส่งออกทางไฟฟ้าของแบคทีเรียเซลลูโลสโดยใช้ออกไซด์นาโนชีทสำหรับอุปกรณ์ผลิตพลังงานไฟฟ้าขนาดเล็กไทรโบอิเล็กทริก

Abstract

Triboelectric nanogenerator (TENG) that can harvest the mechanical energy by touching and transform into electricityhas increased much attention for driving the portable/wearable electronics especially in medical devices. . This research provide the creation of TENG by using natural bacterial cellulose (BC) as the main friction layer and adjusting the electric output performance of BC by adding the 2 main types of AxMyTi2- yO4 Lepidocrocite structure oxide nanosheet compounds, Cs0.7M0.35Ti1.65O4, K0.8M0.4Ti16O4 M = Zn, Ni, CO). The nanosheet was synthesized by solid-State reaction, proton exchange and exfoliation. The composite films were preparedby casting via adding oxide nanosheet compound in ratio at 1.5, 3, 5, 10 and 20 % by volume. It was found that the quantity of oxide nanosheet in bacterial cellulose film affects to dielectric constant and electrical output, including output voltage (VOC), output current (ISC) and maximum power (Pmax). According to the results, adding CsNiTiO4 at 1.5 % by volume can provide the maximum VOC, ISC and Pmax about 100.74 V, 62.07 ʅA and 39.6 ʅW, respectively. Accroding to the comparison of the metal types, the K08Ni04Ti16O4 can provide the VOC = 54.76 V I ISC = 49.34 ʅA, which is higher than that of Cs07Ni035Ti165O4 at the same 3% concentration. This research shows the potential of composite bacterial cellulose and dielectric lepidocrocite oxide for using in the power supply for portable and wearable electronic devices.