Thermal response of sodium ion state in NaMO2 (M=Cr and Fe)
Thermal response of sodium ion state in NaMO2 (M=Cr and Fe)
复制标题
NaMO2 中钠离子态的热响应(M=Cr 和 Fe)
DOI:
10.1002/pssr.201308295
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发表时间:
2014
期刊:
影响因子:
--
通讯作者:
and Y. Moritomo
中科院分区:
文献类型:
--
作者:
D. Tanabe;T. Shimono;W. Kobayashi;and Y. Moritomo
Abstract O3‐type NaM O2 (M= Cr and Fe) is a promising cathode material for sodium ion secondary batteries (SIBs). Here, we investigate the temperature dependence of anisotropic displacement parameters, U33 and U11, in NaM O2 by synchrotron radiation X‐ray powder diffraction measurements. In both compounds, the displacement ratios (r≡U_33/U_11-1) for M and O are positive, reflecting the out‐of‐plane thermal displacement of the M O2 layer. On the other hand, the r value for Na is negative, reflecting the two‐dimensional (2D) host structure.(© 2014 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)