The effect of sodium titanate as the anode material forsodium ion batteries and their applications

• Main Authors: TSAI, SHOU-MIN, 蔡守閔
• Other Authors: Juang, Yung-Der
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/g5yf3b

碩士 === 國立臺南大學 === 材料科學系碩士班 === 104 === The sodium titanate (Na₂Ti₃O₇) as the anode material with the layered structure constructing by titanium dioxide layer and sodium ion layer. And also a pathway between these layer structures providing the sodium ion intercalation, yet its low working voltage. These supposing the sodium titanate as an alternative choice for the anode material of sodium-ion batteries in the future. The sodium titanate (Na₂Ti₃O₇) anode material in this research synthesis by conventional solid state reaction under 850 degree Celsius with different condition. The crystal structure and surface morphology of sodium titanate (Na₂Ti₃O₇) were monoclinic with a rod like shape, particle size between 2 ~10 micron. The overall particle density of sodium titanate increase with the molar ratio of lithium increase in the sodium titanate. Finally the sodium half-cell CR 2032 present a first discharge capacity70 mAh/g (4mA/g, 0.1C) with about 40% capacity lost. After third and 10th cycle, capacity drop to about 40% compare to the first cycle. The charge-discharge curve has been test under 0.01~3V.