Development and Application of Lithium lon Conducting Glasses Utilized of Mixed Anion Effect

(1)用双辊快淬法制备了Li_2S-SiS_2-Li_xMo_y(Li_xMo_y=Li_3PO_4，Li_4SiO_4，Li_4GeO_4，Li_2SO_4，Li_2WO_4)系统玻璃。Li_3PO_4的掺杂提供了最大的玻璃形成区.(2)玻璃稳定性的量度之一，Tg和T_c之差在Li_xMo_y含量为5%时达到最大.(3)Li_xMo_y含量为5%时，玻璃的高电导率约为10；MAS-核磁共振谱表明玻璃中大量的硅原子同时与硫原子和氧原子配位。(5)氧硫玻璃中SiO_nS^&lt；4-n&gt；掺杂的顺序为Li_4GeO_4&lt；Li_4SiO_4&lt；Li_3PO_4。(6)桥氧原子和非桥硫原子的结合可能导致锂离子迁移率的提高。

(1) Glasses in the systems Li_2S-SiS_2-Li_xMO_y (Li_xMO_y = Li_3PO_4, Li_4SiO_4, Li_4GeO_4, Li_2SO_4, Li_2WO_4) were prepared by using twin-roller rapid quenching. The doping of Li_3PO_4 Provided the most extended glass-forming region.(2) The difference between Tg and Tc, which is one of the measures of the glass stability, was maximized at the composition with 5 mol% Li_xMO_y.(3) The glasses with 5 mol% Li_xMO_y exhibited high conductivities of about 10^<-3> Scm^<-1>.(4) ^<29> MAS-NMR spectra revealed that a large number of silicon atoms in the glasses were coordinated with both sulfur and oxygen atoms.(5) The fraction of the SiO_nS^<4-n> in the oxysulfide glasses was larger in the order of Li_4GeO_4 < Li_4SiO_4 < Li_3PO_4 as dopants.(6) The combination of bridging oxygen atoms and non-bridging sulfur atoms may result in the enhancement of lithium ion mobility.