• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International symposium on Ionic and Mixed Conducting Ceramics >Preparation techniques and ionic transport properties of ceria-based electrolytes
【24h】

Preparation techniques and ionic transport properties of ceria-based electrolytes

机译：基于铈基电解质的制备技术和离子传输性能

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Preparation of ceria-based electrolytes with trivalent dopants was examined using (i) high temperatures and pressures, (ii) sol-gel, and hydrothermal route. Stabilization of trivalent ions (e.g., Tb{sup}(3+)) having an ionic size closer to Ce{sup}(4+) in ceria lattice was achieved at high temperatures and pressures. Nd{sup}(3+), which is slightly larger than Ce{sup}(4+), could be doped in the ceria lattice at a concentration up to 40 % by a sol-gel method. For dopants such as Bi{sup}(3+), which have a larger structural mismatch to Ce{sup}(4+), hydrothermal reactions were found to readily form ceria-based electrolytes with solubilities as high as 50 %. The lattice parameter increased nonlinearly when dopant size was close to Ce{sup}(4+), while a linear relationship between lattice parameter and dopant content was obtained for a larger structural mismatch. The variations of ionic conductivities and activation energies of these electrolytes were found to be closely related to the chemical nature of dopants, elemental substitutions, and relative content of oxygen vacancy Vo and defect associations.
机译：使用（i）高温和压力，（ii）溶胶和水热途径​​，检查具有三价掺杂剂的基于二价掺杂剂的基于二价掺杂剂的电解质的制备。在高温和压力下实现具有离子尺寸的三价离子（例如，Tb {sup}（3+）的三价离子（例如，Tb}（3+）。 Nd {sup}（3+）略大于ce {sup}（4+），可以通过溶胶 - 凝胶法以高达40％的浓度掺杂在Ceria格子中。对于诸如Bi {sup}（3+）的掺杂剂，其具有较大的结构不匹配至Ce {sup}（4+），发现水热反应容易容易地形成有铈基电解质，其溶解度高达50％。当掺杂剂尺寸接近Ce {sup}（4+）时，晶格参数增加，而晶格参数和掺杂剂含量之间的线性关系是用于更大的结构不匹配。发现这些电解质的离子导电性和活化能量的变化与掺杂剂，元素取代和氧空位Vo的相对含量和缺陷关联的相关性密切相关。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号