| Summary: | 碩士 === 國立交通大學 === 應用化學系碩博士班 === 107 === Among many energy issues, energy storage system plays an important role. The lithium-ion battery is a common system to storage energy. But there were problems regarding increasing price of Li mineral reserves and disadvantage in a few specific locations. Due to the low price and abundant resource in the earth curst, the sodium-ion batteries have been considered as a desirable alternative to lithium-ion batteries. Among the known materials, tin has advantages of high theoretical specific capacity and the low cost which can be regarded as the candidates of anode material in sodium-ion battery. In this study, the hydrothermal method was used to synthesize the nanasheets structure of SnO2. Then using solvothermal method and annealing process to fabric Sn@C nanosphere. They were characterized by scanning electron microscope, transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy and thermogravimetric analysis. Compared with the SnO2 NSs and Sn@C applied in sodium-ion battery, the Sn@C shown the better performance. At the current density of 50 mAg-1, Sn@C has the best cycle performance. The specific capacity is 93.75 mAh g-1 after 50 cycles of discharge/charge cycle.
|
|---|
