TiO_2取代GeO_2对Li_2O-Al_2O_3-GeO_2-P_2O_5微晶玻璃结构及性能的影响

The Effects of GeO_2 Substitution by TiO_2 on the Microstructures and Conductivities of Li_2O-Al_2O_3-GeO_2-P_2O_5 Glass Ceramics

研究了Li_(1.5)Al_(0.5)(Ge_(1-y)Ti_y)_(1.5)(PO_4)_3(y=0~1)锂离子导电微晶玻璃的物相组成、微观结构和电学性能。结果表明,随着y值不断增大,微晶玻璃析出的主晶相由LiGe2(PO4)3逐渐转变为Li Ti2(PO4)3、次晶相由非导电型C121-Al PO4逐渐变为导电型R3R-Al PO4、电导率由5.9×10-4S/cm逐渐增加到8.8×10-4S/cm,为制备出具有高电导率、高化学稳定性和宽电化学窗口的Li1.5Al0.5(Ge1-yTiy)1.5(PO4)3(LAGTP)复合体系导电微晶玻璃进行了有益探索。

The crystal phase's components,microstructures and conductivities of Li_(1.5)Al_(0.5)(Ge1-yTiy)1.5( PO4)3( y = 0 ~ 1) glass ceramics were studied,respectively.With increasing " y" value,the major conducting phase of glass ceramics changed from Li Ge2( PO4)3 to LiTi_2( PO_4)_3,the minor phase changed from un-conducting C121-Al PO4 to conducting R3R-AlPO_4,the conductivity increased from 5.9 × 10~4 S/cm to 8.8 × 10~4 S/cm.