微波固相法合成钠快离子导体Na_5YSi_4O_（12）

Microwave Radiation Synthesis of Fast Ionic Conductor Na_5YSi_4O_(12)

应用微波方法合成了固相反应难于制备的Ｎａ_５ＹＳｉ_４Ｏ_（１２）纯相，讨论了微波合成条件对产物的影响．与溶胶－凝胶法相比，微波法反应速率快，选择性强，合成的样品具有特异的聚集态、缺陷和微结构，从而导致离子导电活化能下降．

Single phase Na_5YSi_4O_(12) which is difficult to be prepared by conventional solid state reaction, was synthesized by microwave radiation synthesis method. The relationship between synthesis conditions and the phases in products was discussed. A comparison was made of the properties of samples prepared by Sol-Gel method with those by microwave radiation synthesis method,respectively. Compared to conventional Sol-Gel method, the experimental procedure was much simplified and reaction time was shrtened when Na_5YSi_4O_(12) was prepared by microwave radiation synthesis method. The sample prepared by microwave method has a particular micro-structure,aggregating state and defect structures, which leads to the decrease of ionic conducting activation energy.