Li1+2x+yAlxEuyTi2-x-ySixP3-xO12系统锂快离子导体

Li1+2x +yAlxEuyTi2 -x -ySixP3 -xO12 锂快离子导体可用精选的天然高岭石Al4 [Si4 O10 ](OH) 8为原料 ,与Li2 CO3,TiO2 ,NH4 H2 PO4 ,Eu2 O3 高温 (80 0～ 10 0 0℃ )固相反应约 2 0h而制得 .在 y =0 .5 ,x≤ 0 .3 ;x =0 .2 ,y≤ 0 .3的原始组成范围内 ,可以形成一个空间群为R3C的固熔体相 .它们具有较好的离子电导率和较小的离子导电活化能 .当x =0 .2 ,y =0 .1,t=40 0℃时 ,其电导率达 9.98mS·cm-1,其活化能为 34.0kJ.mol-1.

Study on lithium fast ion conductors Li1+2x+yAlxEuyTi2-x-ySixP3-xO12 system

Natural layer aluminosilicate kaolinite Al4[Si4O10](OH)8 is usedas a starting material for preparing a new system of lithium fast ion conductors Li1+2x+yAlxEuyTi2-x-ySixP3-xO12by high temperature (800～1000℃) solid phase reaction for about 20h. A solid solution phase with R3C structure exists in a limited composition region. The electrical measurements indicate that the maximum conductivity in the above system (referred to as Al-Eu-Lisicon) is the initial composition with x=0.2 and y=0.1 under which its conductivity reaches up to 9.98mS.cm-1 at 400℃ and the activation energy is 34.0kJ.mol-1.