The Study Of Preparation And Application About Nano-porous Silver And Titanium

With the development of electronic industry and information industry, especially in the field of micro electromechanical system (MEMS) and integrated circuits (ICs), thin film materials gradually shows its importance and has got a wide range of applications. Nowadays, the application of thin film materials have penetrated in to many important areas of science and technology and the national economy, such as aerospace, food and pharmaceuticals, energy, communications and information industries. In the future, the thin film materials will become more integrated, intelligent, complex, environment-friendly and micro-miniature. It can be said that the thin film materials will play a positive role in the development of modern science and technology. At the same time, nano-porous materials as the emerging field of study in recent years, also have good potential value in the field of energy sources, catalyze and micro-electronic device. For that reasons, in this study we prepared Ag-based thin films via different sputtering methods and studied the microstructure, morphology and corrosion resistance of the films. Then the nano-porous silver films were obtained by dealloying methods. We also studied the potential application value of the nano-porous silver films. Besides, we fabricated nano-porous titanium ribbon that can be used as electrode materials of supercapacitor. The specific research contents are as follows:1. Via X-ray diffraction, scanning electron microscope and transmission electron microscope, we observed the micromorphology of the AgCuCe films that prepared by ion-beam sputtering and magnetron co-sputtering. The film that obtained by ion-beam sputtering had a more smooth and dense surface. Then, the film was used to protect the aluminum alloy substrate. In different solutions, we studied the corrosion resistance of the films and the corrosion potential of the films was obtained by measuring the polarization curves. 2. The AgMgCe films were used as precursor. By dealloying method, nano-porous silver films were obtained and the porosity of the films can be adjusted. The nano-porous films own special structure and function, with good conductive ability, larger specific surface area and more active site. These characteristics make the films have potential applications in the fields of catalysis, energy storage and biosensor. As we know, hydrogen peroxide is an important kind of small molecule chemicals. However, excessive use of hydrogen peroxide will have adverse effects on human health. Therefore, it has great significance in how accurately and quickly detecting hydrogen peroxide concentration. We use the nano-porous silver film as electrochemical sensor and study its detection capability of hydrogen peroxide concentration. We find that the signal intensity and concentration showed a good linear relationship.3. Vacuum melt spinning was used to prepare Cu-Ti ribbon. After that, nano-porous titanium ribbons were obtained by dealloying. And then, transition metal manganese oxides were deposited on the nano-porous titanium ribbons by electrochemical method to form composite material. The nano-porous titanium ribbon served as the structure support and current collector for the composite material, while transition metal manganese oxides provided high specific capacitance. The micro structure of the ribbon before and after depositing transition metal manganese oxides were observed by scanning electron microscope. The study found that the composite material has high specific capacity (493F·g-1). It shows that nano-porous titanium-based supercapacitor has high potential application value.