...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of the European Ceramic Society >Preparation of monophasic titanium sub-oxides of Magneli phase with enhanced thermoelectric performance
【24h】

Preparation of monophasic titanium sub-oxides of Magneli phase with enhanced thermoelectric performance

机译：增强热电性能的Magneli相单位钛亚氧化物的制备

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Titanium sub-oxides of Magneli phase are considered as earth-abundant, non-toxic materials for thermoelectric application at high temperature, but very limited investigation has been reported mainly owing to the difficulty lying in obtaining monophasic material. Herein we describe a facile strategy to prepare monophasic Ti9O17 and Ti4O7 powder, in which the single Ti9O17 phase is obtained for the first time. After spark plasma sintering, the thermoelectric properties of monophasic Ti9O17 and Ti4O7 ceramics are studied comparatively. Despite the one magnitude lower electrical conductivity, Ti9O17 shows higher power factor compared with Ti4O7 due to the large Seebeck coefficient. Moreover, with the low electronic thermal conductivity, sub-micron scaled grain size and nano-scaled crystallographic shear plane, the Ti9O17 ceramic exhibits even lower thermal conductivity compared to Ti4O7, leading to a ZT of 0.16 at 764 K, which is the best thermoelectric performance among reported Magneli phases.
机译：Magneli相的钛亚氧化物被认为是在高温下热电应用的土坯，无毒的材料，但据报道了非常有限的调查，主要是由于难以获得单表含量。在此，我们描述了制备单张Ti9O17和Ti4O7粉末的容易策略，其中首次获得单个Ti9O17相。在火花等离子体烧结之后，相对较好地研究了单选式Ti9O17和Ti4O7陶瓷的热电性能。尽管具有一个幅度较低的导电性，但由于塞贝克系数大，Ti9O17显示了与Ti4O7相比的更高功率因数。此外，通过低电子导热率，亚微米缩放晶粒尺寸和纳米缩放的晶体剪切平面，与Ti4O7相比，Ti9O17陶瓷表现出甚至降低导热率，导致764 k的Zt为0.16，这是最佳的热电报告的Magneli阶段之间的性能。

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