TY - JOUR
T1 - Temperature dependence of anisotropic displacement parameters in O3-type NaMO2 (M = Cr and Fe)
T2 - Comparison with isostructural LiCoO2
AU - Tanabe, D.
AU - Shimono, T.
AU - Kobayashi, Wataru
AU - Moritomo, Y.
PY - 2014
Y1 - 2014
N2 - 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 $(r \equiv \sqrt {U_{33} /U_{11} } - 1)$ 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.
AB - 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 $(r \equiv \sqrt {U_{33} /U_{11} } - 1)$ 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.
KW - Crystal structure
KW - X-ray diffraction
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U2 - 10.1002/pssr.201308295
DO - 10.1002/pssr.201308295
M3 - Article
AN - SCOPUS:84896035401
SN - 1862-6254
VL - 8
SP - 287
EP - 290
JO - Physica Status Solidi - Rapid Research Letters
JF - Physica Status Solidi - Rapid Research Letters
IS - 3
ER -