Researches On Hybrid Energy Textile For Simultaneously Harvesting Light And Mechanical Energy

Currently,fashionable,lightweight and flexible wearable devices have increasingly widespread in our life.On the principle of non-destructive performance,people put forward higher requirements on the tensile,flexural and wearable properties of the devices.The traditional rigid plate structure of the power supply system seriously hindered the equipment more light,miniaturization and integrated.Simultaneously,the frequent charging problem also need to be solved.In recent years,although the fabric-based energy devices has provided a way to solve these problems,the output energy of single fabric-based energy devices not be satisfied the requirement of wearable electronics.The traditional woven integrated technology of multi-layer stacking,embroidery has also limited the large-scale fabrication and encapsulation of fabric-based energy devices.Here,the all-solid dye sensitized solar cell(DSSC)are woven via a shuttle-flying process with fiber-based triboelectric nano-generators(TENG)to create a hybrid power textile.Simultaneously,we optimized a new connection technology to ensure the normal work of smart fabric when harvest energy simultaneously from ambient sunshine and human biomechanical movement.It not enlarge the energy acquisition range,but also improve the output performance of the smart fabric.The main contents of this paper include the following points:(1)Study through electroplating technology,we produced the composite conductive fiber manganese material use as anode substrate of DSSC,while we use shuttle technology to weave a low-cost photovoltaic fabric.The study found that the morphological structure of the metal manganese layer and the semiconductor ZnO nanometer array structure have a big impact on the photoelectric performance of All-solid-state fiber DSSC.When the voltage was 3.1 V,the pH was 7.5 and the Zn2+concentration was 0.03 M,the performance of all-solid fiber-like DSSC was the best.By comparison,it was found that the photoelectric conversion efficiency of the DSSC was increased by 21% than wound structure.(2)A polytetrafluoroethylene(PTFE)film was used as the friction material,and the fibrous TENG was prepared by ion sputtering.In this paper,we via a shuttle-flying process to weave textile harvesting mechanical energy.Mainly study the influence of weave structure,electrical connection mode and working mode on the performance of Triboelectric Nano Generator,while we weave a triboelectric nano-generator textile with an area of 2 cm × 2 cm.In the tapping mode,In the tapping mode,the short circuit current and open circuit voltage of the textile are 2A and ~300V,respectively.(3)For the sustainable working of portable devices,we fabricated a hybrid power textile to harvest energy simultaneously from ambient sunshine and human biomechanical movement in a wearable manner.A single layer of such fabric is 320μm thick and can be integrated into various cloths,curtains,tents and so on.This hybrid power textile,fabricated with a size of 4 cm by 5 cm,was demonstrated to charge a 2 mF commercial capacitor up to 2 V in 1 min under ambient sunlight in the presence of mechanical excitation,such as human motion and wind blowing.The textile could continuously power small electronic equipment,and has wide application prospect in the wearable device.The technology is expected to have a wide range of applications in some fields,such as health,energy,military.