Zr对Li_(1.3)Ti_(1.7)Al_(0.3)(PO_4)_3传导材料中Na/Li离子交换反应的影响  

Effect of Zr on Na/Li ion exchange behavior of Li_(1.3)Ti_(1.7)Al_(0.3)(PO_4)_3

作　　者：娄太平[1] 李大纲[1] 吕国志[1] 刘营[1] 许健[1] 

机构地区：[1]东北大学材料与冶金学院,沈阳110004

出　　处：《中国有色金属学报》2004年第9期1514-1518,共5页The Chinese Journal of Nonferrous Metals

基　　金：国家自然科学基金资助项目(50274030);辽宁省自然科学基金资助项目(20032027)

摘　　要：Li1.3Ti1.7Al0.3(PO4)3是具有Nasicon骨架的锂离子传导材料,其中的Li+很容易被溶液中的Na+置换。研究了在Li1.3Ti1.7Al0.3(PO4)3结构中掺入Zr来替代Ti,以提高Na/Li离子交换速度。结果表明:增加Zr元素比例可显著提高Li1.3Ti1.7-xZrxAl0.3(PO4)3材料中Na/Li离子交换反应速度。Li1.3Ti1.7-xZrxAl0.3(PO4)3材料中的Na/Li离子交换反应动力学过程可近似由JMAK方程描述。The lithium ion conductor Li_1.3Ti_1.7Al_0.3(PO_4)_3 is Nasicon structural functional material, which has very high ion exchange selectivity to Na^+. The effect of Zr on Na/Li ion exchange reaction and behavior for the Li_1.3Ti_1.7Al_0.3(PO_4)_3 in sodium chloride solution was investigated. The experimental results show that the Na/Li ion exchange mass and exchange fraction significantly raise for Li_1.3Ti_1.7-xZr_xAl_0.3(PO_4)_3 with Zr element increasing in the same infiltration time. The Na/Li ion exchange reaction process was investigated by means of X-ray diffraction. It is shown that the reactants is Na_1.3Ti_1.7-xZr_xAl_0.3(PO_4)_3 during all the reactive process. The ion exchange kinetics of Na/Li for Li_1.3Ti_1.7-xZr_xAl_0.3(PO_4)_3 is analyzed and discussed. The Na/Li ion exchange kinetics process of Li_1.3Ti_1.7-xZr_xAl_0.3(PO_4)_3 in sodium chloride solution can be represented approximately by the equation of JMAK.

关 键 词：ZR Li1.3Ti1.7Al0.3(PO4)3 离子交换 

分 类 号：O64[理学—物理化学]