期刊論文
| 學年 | 100 |
|---|---|
| 學期 | 1 |
| 出版（發表）日期 | 2012-01-01 |
| 作品名稱 | Preparation of compact Li-doped Y2Ti2O7 solid electrolyte |
| 作品名稱（其他語言） | |
| 著者 | Wen, L.C.; Hsieh, H.Y.; Lee, Y.H.; Chang, S.C.; Kao, H.-C.I.; Sheu, H.S.; Lin, I.N.; Chang, J.C.; Lee, M.C.; Lee, Y.S. |
| 單位 | 淡江大學化學學系 |
| 出版者 | Amsterdam: Elsevier BV * North-Holland |
| 著錄名稱、卷期、頁數 | Solid State Ionics 206, pp.39–44 |
| 摘要 | Three series of solid electrolytes were prepared with the nominal compositions of (Y2−xLi3x)Ti2O7 (Y3LT), (Y2−xLix)Ti2O7−x(YLT)and Y2−xTi2O7−3x/2 (YT) with x = 0.040 − 0.11. Comparing the unit cell a-axis of the YLT with that of YT, the latter is shorter with the same amount of x. This indicates a successful substitution of the Li ion into the Y site of Y2Ti2O7. However, both Y3LT and YLT have exactly the same unit cell a-axis length with the same amount of x so that the solid solution formed probably has the same formula, (Y2−xLix)Ti2O7−x, in which only one Li ion is substituted into the Y site. Extra Li2O added in the Y3LT is probably acting as a self flux to lower the melting point of the mixture. As a result, materials become more compact and grains grow bigger. One compound of Y3LT with x = 0.060 has a total conductivity of 4.3(4) × 10− 4 S⋅cm− 1 at 700 °C. Adding Li2O as a flux and carefully controlling the heat treatment history, compact sample of Y3LT with a relative density higher than 90% was obtained at a temperature as low as 1150 °C. Its ionic conductivity is comparable to one Y2Ti2O7 prepared at 1600 °C with a conductivity reported as 2.30 × 10− 4 S⋅cm− 1. |
| 關鍵字 | (Y2 − xLix)Ti2O7 − x;Pyrochlore;Titanate;Li2O;Oxygen ion conductor |
| 語言 | en |
| ISSN | 0167-2738 |
| 期刊性質 | 國外 |
| 收錄於 | SCI |
| 產學合作 | 國內 |
| 通訊作者 | 高惠春 |
| 審稿制度 | 是 |
| 國別 | NLD |
| 公開徵稿 | |
| 出版型式 | ,電子版,紙本 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/79680 ) |