...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Physical review >Diffusive behavior in LiMPO_4 with M = Fe, Co, Ni probed by muon-spin relaxation
【24h】

Diffusive behavior in LiMPO_4 with M = Fe, Co, Ni probed by muon-spin relaxation

机译：介子自旋弛豫探测M = Fe，Co，Ni的LiMPO_4的扩散行为

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

In order to study the diffusive nature of lithium transition-metal phospho-olivines, we measured muon-spin relaxation (μ~+SR) spectra for the polycrystalline LiMPO_4 samples with M = Mn, Fe, Co, or Ni in the temperature range between 50 and 500 K. The μ~+SR spectra under zero applied field are strongly affected by the magnetic moments of the 3d electrons in the M~(2+) ions so that, for LiMnPO_4, it was difficult to detect the relaxation change caused by the diffusion due to the large Mn~(2+)(S = 5/2) moments. However, diffusive behavior was clearly observed via the relaxation due to nuclear dipolar fields above ~150 K for LiFePO_4, LiCoPO_4, and LiNiPO_4 as 5 decreased from 2 to 1. From the temperature dependence of the nuclear field fluctuation rate, self-diffusion coefficients of Li~+ ions (D_(Li)) at 300 K and its activation energy (E_a) were estimated, respectively, as ～3.6(2) × 10~(-10) cm~2/s and E_a = 0.10(2) eV for LiFePO_4, ～1.6(1) × 10~(-10) cm~2/s and E_a = 0.10(1) eV for LiCoPO_4, and ～2.7(4) × 10~(-10) cm~2/s and E_a = 0.17(2) eV for LiNiPO_4, assuming that the diffusing Li~+ ions jump between the regular site and interstitial sites.
机译：为了研究锂过渡金属磷橄榄石的扩散性质，我们在M = Mn，Fe，Co或Ni的温度范围内，测量了多晶LiMPO_4样品的μ自旋弛豫（μ〜+ SR）光谱。 50和500K。在零施加场下的μ〜+ SR光谱受M〜（2+）离子中3d电子的磁矩的强烈影响，因此对于LiMnPO_4来说，很难检测到引起的弛豫变化由于大的Mn〜（2 +）（S = 5/2）矩而产生的扩散。然而，由于LiFePO_4，LiCoPO_4和LiNiPO_4的核偶极场在〜150 K以上而引起的弛豫明显地观察到了扩散行为，因为5从2降低到1。估计300 K下的Li〜+离子（D_（Li））及其活化能（E_a）为〜3.6（2）×10〜（-10）cm〜2 / s，E_a = 0.10（2） LiFePO_4的eV为〜1.6（1）×10〜（-10）cm〜2 / s，E_a = 0.10（1）eV的LiCoPO_4为〜2.7（4）×10〜（-10）cm〜2 / s对于LiNiPO_4，E_a = 0.17（2）eV，假设扩散的Li〜+离子在规则位点和间隙位点之间跳跃。

著录项

  • 来源
    《Physical review》 |2012年第5期|p.054111.1-054111.9|共9页
  • 作者

    Jun Sugiyama; Hiroshi Nozaki; Masashi Harada; Kazuya Kamazawa; Yutaka Ikedo; Yasuhiro Miyake; Oren Ofer; Martin Mansson; Eduardo J. Ansaldo; Kim H. Chow; Genki Kobayashi; Ryoji Kanno;

  • 作者单位

    Toyota Central Research and Development Laboratories Inc., Nagakute, Aichi 480-1192, Japan;

    Toyota Central Research and Development Laboratories Inc., Nagakute, Aichi 480-1192, Japan;

    Toyota Central Research and Development Laboratories Inc., Nagakute, Aichi 480-1192, Japan;

    Toyota Central Research and Development Laboratories Inc., Nagakute, Aichi 480-1192, Japan,Comprehensive Research Organization for Science and Society (CROSS), 162-1 Shirakata, Tokai, Ibaraki 319-1106,Japan;

    Muon Science Laboratory, Institute of Materials Structure Science, KEK, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan;

    Muon Science Laboratory, Institute of Materials Structure Science, KEK, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan;

    TRIUMF, 4004 Wesbrook Mall, Vancouver, BC, V6T 2A3 Canada;

    Laboratory for Solid State Physics, ETH Zuerich, CH-8093 Zuerich, Switzerland;

    TRIUMF, 4004 Wesbrook Mall, Vancouver, BC, V6T 2A3 Canada;

    Department of Physics, University of Alberta, Edmonton, AB, T6G 2G7 Canada;

    Department of Material and Life Chemistry, Faculty of Engineering, Kanagawa University, Yokohama 221-8686, Japan;

    Department of Electronic Chemistry, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology,Yokohama 226-8503, Japan;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    muon spin rotation and relaxation; lithium-ion batteries; diffusion;

    机译：介子旋转和松弛;锂离子电池;扩散;

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