物理化学学报 >> 2007, Vol. 23 >> Issue (10): 1642-1646.doi: 10.3866/PKU.WHXB20071029

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LiTi2(PO4)3的Na/Li离子交换特征

娄太平; 王家良   

  1. 东北大学材料与冶金学院, 沈阳 110004
  • 收稿日期:2007-03-21 修回日期:2007-05-08 发布日期:2007-10-01
  • 通讯作者: 娄太平 E-mail:loutaiping@yahoo.com.cn

Ion Exchange Behavior of Na/Li for the Lithium Ion Conductor of LiTi2(PO4)3

LOU Tai-Ping; WANG Jia-Liang   

  1. School of Materials and Metallurgy, Northeastern University, Shenyang 110004, P. R. China
  • Received:2007-03-21 Revised:2007-05-08 Published:2007-10-01
  • Contact: LOU Tai-Ping E-mail:loutaiping@yahoo.com.cn

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摘要： 锂离子传导材料LiTi2(PO4)3能在LiCl水溶液中高选择性地与Na+进行离子交换. 研究了NaCl 溶液中LiTi2(PO4)3上的Na/Li离子交换反应, 实验结果表明, 升高温度能显著提高LiTi2(PO4)3上的Na/Li交换反应速率, 其离子交换动力学规律可近似由JMAK(Johnson-Mehl-Aurami-Kalmogorav)方程描述. 对LiTi2(PO4)3在水和NaCl溶液中的溶解行为的研究结果表明, 升高温度能加快其在水中的溶解速率, pH值过大或过小及离子交换都会加剧LiTi2(PO4)3的溶解.

关键词: LiTi2(PO4)3, 离子交换, 溶解

Abstract: The lithium ion conductor LiTi2(PO4)3 has a very high ion exchange selectivity to Na+ in sodium chloride solution. The ion exchange behavior of Na/Li for LiTi2(PO4)3 in NaCl solution was investigated. The experimental results showed that the Na/Li ion exchange reaction rate increased obviously for LiTi2 (PO4)3 with increasing temperature, and the Na/Li ion exchange kinetics process of LiTi2(PO4)3 in sodium chloride solution could be represented approximately by the equation of JMAK(Johnson-Mehl-Aurami-Kalmogorav). The dissolution behaviors of LiTi2(PO4)3 in water and NaCl solution were investigated, the results showed that higher temperature, acid or alkali environment could enhance the dissolution of LiTi2(PO4)3.

Key words: LiTi2(PO4)3, Ion exchange, Dissolving