Effect of y2O3 addition on crystal structure and electrical conductivity of WO3 Doped Bi2O3 solid electrolyte

Cheng Yen Hsieh, Kuan-Zong Fung

研究成果: Conference contribution

2 引文 斯高帕斯(Scopus)

摘要

WO3-doped Bi2O3 was found to exhibit stable fluorite-based structure. However, the electrical conductivity of WO 3-doped Bi2O3 is significantly lower than that of Y2O3-doped Bi2O3. The structure and electrical conductivity of samples formulated as (YXW 0.15Bi0.85-X)2O3.45 (X=0.1∼0.4) were investigated. The assintered (Y0.1W0.15Bi 0.75)2O3.45 exhibited a single cubic structure that is isostructural with δ-Bi2O3. However, the cubic fluorite structure may decompose into cubic structure and rhombohedral Y6WO12 after heat-treatment at 900°C for 3 hours. For X=0 2, 0.3 and 0.4, the as-sintered samples consisted of a cubic fluorite structure and rhombohedral Y6WO12. The conductivities of (YXW0.15Bi0.85-X)2O3.45 45 (X=0.1-0.4) decrease with increasing X value. For X=0.1, the conductivity is 1.97 × 10-3 S cm-1 at 700°C and slightly lower than that of (W0.15Bi0.85)2O3.45. The Bi 6s2 lone pairs of electrons are known to lead to enough oxygen ion mobility. Thus it is reasonable to expect that ionic conductivity drops as Y substitutes for Bi.

原文English
主出版物標題ECS Transactions - 10th International Symposium on Solid Oxide Fuel Cells, SOFC-X
頁面2357-2362
頁數6
版本1 PART 2
DOIs
出版狀態Published - 2007 十二月 1
事件10th International Symposium on Solid Oxide Fuel Cells, SOFC-X - , Japan
持續時間: 2007 六月 32007 六月 8

出版系列

名字ECS Transactions
號碼1 PART 2
7
ISSN(列印)1938-5862
ISSN(電子)1938-6737

Other

Other10th International Symposium on Solid Oxide Fuel Cells, SOFC-X
國家Japan
期間07-06-0307-06-08

    指紋

All Science Journal Classification (ASJC) codes

  • Engineering(all)

引用此

Hsieh, C. Y., & Fung, K-Z. (2007). Effect of y2O3 addition on crystal structure and electrical conductivity of WO3 Doped Bi2O3 solid electrolyte. 於 ECS Transactions - 10th International Symposium on Solid Oxide Fuel Cells, SOFC-X (1 PART 2 編輯, 頁 2357-2362). (ECS Transactions; 卷 7, 編號 1 PART 2). https://doi.org/10.1149/1.2729356