(河北師范大學(xué) 化學(xué)系， 石家莊 050016)
摘 要: 以Li2CO3，ZnO和NH4H2PO4為原料，采用傳統(tǒng)固相合成法和檸檬酸鹽溶膠凝膠法制備了組成為Li1+2xZn1-xPO4 (x = 0～0.5)的固體粉末和燒結(jié)體。對合成材料作了DTA，TG，XRD和SEM等分析，并用交流阻抗技術(shù)測定了樣品的導(dǎo)電性。實驗結(jié)果表明，與傳統(tǒng)的固相合成方法相比，溶膠凝膠法可以使樣品合成溫度降低約400 ℃，并且具有較高的導(dǎo)電率。
關(guān)鍵字: Li1+2xZn1-xPO4； 檸檬酸鹽溶膠[CD*2]凝膠法；固相合成； 離子導(dǎo)電性
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
