首页> 外文会议>ECS Meeting >Novel LiFeTiO_4 Polymorph with a Tunnel Structure: Synthesis, Structural and Electrochemical Characterization
【24h】

Novel LiFeTiO_4 Polymorph with a Tunnel Structure: Synthesis, Structural and Electrochemical Characterization

机译:具有隧道结构的新型Lifetio_4多晶型物:合成,结构和电化学表征

获取原文

摘要

New polymorph modification of LiFeTiO_4 with the calcium ferrite structure was prepared by low temperature ion exchange. This compound can be considered as a model system for multiple electron cycling per Fe atom, i.e. Fe~(2+) (Li_(1+x)FeTiO_4)/Fe~(4+) (Li_(1-x)FeTiO_4). The crystal structure of LiFeTiO_4 was determined using Rietveld refinement (Pnma, a = 8.9498(6) A, b = 2.9528(6) A, c = 10.7457(8) A). LiFeTiO_4 in the calcium ferrite type structure was found to be thermodynamically unstable, transforming to the known spinel LiFeTiO_4 polymorph at higher temperatures.
机译:通过低温离子交换制备具有钙铁氧体结构的LifetiO_4的新多晶型改性。该化合物可以被认为是每Fe原子的多电子循环的模型系统,即Fe〜(2+)(Li_(1 + x)FetiO_4)/ Fe〜(4+)(Li_(1-x)Fetio_4)。使用RIETVELD细化(PNMA,A = 8.9498(6)A,B = 2.9528(6)A,C = 10.7457(8)A)测定LifetiO_4的晶体结构。发现钙铁氧体型结构中的LifetiO_4在较高温度下变形为热力学上不稳定,转化为已知的尖晶石LifetiO_4多晶型物。

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