資料載入中.....
|
請使用永久網址來引用或連結此文件:
http://ir.ncue.edu.tw/ir/handle/987654321/14227
|
題名: | Synthesis of Superconducting Cobalt Oxyhydrates Using a Novel Method: Electrolyzed and Oxidized Water |
作者: | Liu, Chia-Jyi;Wu, Tsung-Hsien;Hsu, Lin-Li;Wang, Jung-Sheng;Chen, Shu-Yo |
貢獻者: | 物理學系 |
關鍵詞: | Superconductors;Sodium cobalt oxyhydrates;Electrolyzed and oxidized water |
日期: | 2007-09
|
上傳時間: | 2012-09-10T06:15:11Z
|
出版者: | Elsevier |
摘要: | By deintercalation of Na+ followed by inserting bilayers of water molecules into the host lattice, the layered cobalt oxide of γ-Na0.7CoO2 undergoes a topotactic transformation to a layered cobalt oxyhydrate of Na0.35(H2O)1.3CoO2−δ with the c-axis expanded from c ≈ 10.9 Å to c ≈ 19.6 Å. In this paper, we demonstrate that the superconducting phase of c ≈ 19.6 Å can be directly obtained by simply immersing γ-Na0.7CoO2 powders in electrolyzed/oxidized (EO) water, which is readily available from a commercial electrolyzed water generator. We found that high oxidation–reduction potential of EO water drives the oxidation of the cobalt ions accompanying by the formation of the superconductive c ≈ 19.6 Å phase. Our results demonstrate how EO water can be used to oxidize the cobalt ions and hence form superconducting cobalt oxyhydrates in a clean and simple way and may provide an economic and environment-friendly route to oxidize the transition metal of complex metal oxides. |
關聯: | Physica C: Superconductivity, 460-462: 493-494 |
顯示於類別: | [物理學系] 期刊論文
|
文件中的檔案:
檔案 |
大小 | 格式 | 瀏覽次數 |
index.html | 0Kb | HTML | 645 | 檢視/開啟 |
|
在NCUEIR中所有的資料項目都受到原著作權保護.
|