Flexible Energy Storage Electrode Materials And Application Of 3D Printing In Flexible Energy Storage Devices

Since the 21st century,with the rapid progress of science and technology,demand of human for electronic devices is increasing day by day.The development of electronic devices is gradually toward the direction of flexibility,miniaturization and integration.However,at present,the energy storage devices which supply power to electronic devices have many disadvantages,such as unable to bend,low energy density,large volume and so on,which seriously restrict the development of new electronic devices.Therefore,through the development of electrode materials,new manufacturing process and the integration of energy storage devices and electronic devices,the development of new flexible energy storage devices with high energy density and miniaturization is the current research hotspot.In this paper,flexible energy storage devices are taken as the basic starting point,from the preparation of special flexible energy storage electrode materials,to the introduction of 3D printing as a new manufacturing process of flexible energy storage devices,and then to the integrated system research of flexible electronic devices and flexible energy storage devices.The development of flexible energy storage devices with high energy density and miniaturization is systematically studied.As an important branch of flexible energy storage technology,flexible lithium-ion battery emphasizes the safety performance of devices more than traditional lithium-ion battery.Therefore,two kinds of positive and negative materials,lithium vanadate phosphate and lithium titanate,with good safety,stable circulation and excellent performance,are selected for the first time in this paper.Polyethylene terephthalate/indium tin oxide is used as the collecting fluid and solid electrolyte membrane as the separator.The electrochemical properties of the flexible lithium-ion battery before and after bending were tested and analyzed.The preparation and properties of super capacitor materials such as high capacity multivalent manganese oxides,ultra light graphene aerogels/manganese dioxide electrodes,and stretchable liquid metal/Zinc Oxide/manganese oxide composite electrodes were studied.Several different electrode materials with different advantages were obtained.3D printing technology is introduced into the manufacture of flexible supercapacitors.New flexible supercapacitor structures are designed and new flexible supercapacitor devices are developed.The new flexible supercapacitor devices are integrated with a new flexible electronic device,friction nano-generator and integrated system.The performance of the integrated system is tested for the future flexible electricity.The characteristics of integrated,miniaturized and self-powered sub-systems provide guidance.