(河北师范大学 化学系， 石家庄 050016)
摘 要: 以Li2CO3，ZnO和NH4H2PO4为原料，采用传统固相合成法和柠檬酸盐溶胶凝胶法制备了组成为Li1+2xZn1-xPO4 (x = 0～0.5)的固体粉末和烧结体。对合成材料作了DTA，TG，XRD和SEM等分析，并用交流阻抗技术测定了样品的导电性。实验结果表明，与传统的固相合成方法相比，溶胶凝胶法可以使样品合成温度降低约400 ℃，并且具有较高的导电率。
关键字: Li1+2xZn1-xPO4； 柠檬酸盐溶胶[CD*2]凝胶法；固相合成； 离子导电性
electromachining sludge of nickel alloy
（School of Materials and Metallurgy，
Northeastern University， Shenyang 110006， P.R.China）
Abstract:The samples of Li1+2xZn1-xPO4(x =0～0.5) were prepared by citrate sol-gel method and solid state reaction respectively. The results determined on the structure of synthetic samples show that there are several phases：α-LiZnPO4(x =0)，Li9Zn6(PO4)7(x=0.14) and α-Li4Zn(PO4)2(x=0.5)in this system. The formation temperature of the samples prepared by citrate sol-gel method is much lower than that of those prepared by solid state reaction. The ionic conductivity of the sinters was measured by ac-impedance spectrum，in which α-LiZnPO4，Li9Zn6(PO4)7 do not show ionic conductivity at room temperature. However，the sample of α-Li4Zn(PO4)2 has a high Li cationic conductivity of 1.66×10-6S·cm-1at 25 ℃.
Key words: Li1+2xZn1-xPO4; citrate sol-gel method; solid state reaction; ionic conductivity
