Effect of substitution of Si with V and Mo on ionic conductivity of Na5YSi4O12-type glass-ceramics
(0) Glass-ceramics of the vanadium-or molybdenum-containing Na5RSi4O12-type (R=rare earth; Y) Na+-superionic conductors were prepared by crystallization of glasses with the compositions Na3+3x-yY1-xVySi3-yO9 (NYVS) or Na3+3x-2yY1-xMoySi3-yO9 (NYMS), and the effects of Vor Mo elements on the separation of the phase and the microstructural effects on the conduction properties of glass-ceramics were discussed. The conductivities of the glass-ceramic NYVS and NYMS with the Na3.9Y0.6V0.3Si2.7O9 and Na3.7Y0.7Mo0.1Si2.9O9 compositions were 0.87×10-2 and 3.58×10-2S/cm at 300℃, respectively, and the Na+ionic transport numbers of these glass-ceramics determined by Wagner polarization method were nearly 0.9 and 1 at 300℃, respectively.
Na5YSi4O12-type Glass-ceramics Crystallization Conduction properties Ionic transport number
Toshinori Okura Tatsuya Takahashi Hideki Monma Kimihiro Yamashita
Department of Materials Science and Technology, Kogakuin University, 2665-1, Nakano, Hachioji-shi, T Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, 2-3-10, Kanda-Sur
国际会议
The 16th International Conference on Solid State Ionics(第十六届国际固态离子学会议)
上海
英文
1291-1295
2007-07-01（万方平台首次上网日期，不代表论文的发表时间）