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
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摘要
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.
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.
引文
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[2]Armand M,Tarascon J M.Building better batteries[J].Nature,2008,451(7):652-657.
[3]Aono H,Sugimoto E.Ionic conductivity and sinterability of lithium titanium phosphate system[J].Solid State Ionics,1990,8(40-41):38-41.
[4]Cannas C,Musinu A,Piccaluga G,et al.Advances in the structure and microstructure determination of yttrium silicates using the the Rietveld method[J].Journal of Solid State Chemistry,2005,178:1526-1532.
[5]He M,Wu M,Zhang S,et al.Quantitative analysis of crystalline and remaining glass phases in Ca O-B2O3-Si O2ternary system glass ceramics[J].Journal of Alloys and Compounds,2010,506(2):757-760.
[6]Martínez J R,Sánchez S P,Zarzosa G O,et al.Rietveld refinement of amorphous Si O2prepared via sol-gel method[J].Mater.Lett.,2006,60(29-30):3526-3529.
[7]Dutta H,Sen A,Bhattacharjee J,et al.Preparation of ternary Ti0.9Ni0.1C cermets by mechanical alloying:microstructure characterization by Rietveld method and electron microscopy[J].Journal of Alloys and Compounds,2010,493(1-2):666-671.
[8]He K,Wang Yag,Zu C,et al.Influence of Al2O3additions on crystallization mechanism and conductivity of Li2O-Ge O2-P2O5glass-ceramics[J].Physica B,2011,406(20):3947-3950.
[9]Cruz A M,Ferreira E B,Rodrigues A C M.Controlled crystallization and ionic conductivity of a nanostructured Li Al Ge PO4glass-ceramic[J].Journal of Non-Crystalline Solids,2009,355(45-47)2295-2301.
[10]Will G.Powder diffraction:the rietveld method and the two stage method to determine and rene crystal structures from powder diffraction data[B].Springer-verlag,Berlin,Heidelberg,2006:44-69.
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[12]Wang Y H,He K,Zu C k,et al.Study on crystallization kinetics of Li2O-Al2O3-Ti O2-P2O5glass by non-isothermal technique[J].Advanced Materials Research,2012,535:1629-1633.
[13]Xu X X,Wen Z Y,Wu X W.Lithium Ion-Conducting glass ceramics of Li1.5Al0.5Ge1.5(PO4)3-xLi2O(x=0.0-0.20)with Good Electrical and Electrochemical Properties[J].Journal of the American Ceramic Society,2007,90(9):2802-2806.
[14]Kazunori T.Method for formming electorde on ceramic[P].JP19910245598.