TY - JOUR
T1 - Structural environment of chloride ion-conducting solids based on lanthanum oxychloride
AU - Nunotani, Naoyoshi
AU - Misran, Muhammad Radzi Iqbal Bin
AU - Inada, Miki
AU - Uchiyama, Tomoki
AU - Uchimoto, Yoshiharu
AU - Imanaka, Nobuhito
N1 - Funding Information:
A part of the experiments in this study were performed in the Center of Advanced Instrumental Analysis, Kyushu University, and we thank Dr. Yoshinori Miura (Kyushu University) for supporting us with the XPS measurements. This study was supported in part by the JSPS Grant-in-Aid for Scientific Research on Innovative Areas “Mixed anion” (JP17H05482, JP16H06440, JP16H06441, and JP16H06438). The synchrotron radiation experiments were performed at the BL01B1 of SPring-8 with the approval of the Japan Synchrotron Radiation Research Institute (JASRI) (Proposal No. 2017A1032).
Publisher Copyright:
© 2019 The American Ceramic Society
PY - 2020/1/1
Y1 - 2020/1/1
N2 - The effect of the structural environment on the Cl− ion conductivity was demonstrated in LaOCl-based solid electrolytes. By replacing the La3+ site with lower-valent Mg2+ or Ca2+ ions, the conductivity was enhanced owing to the formation of a Cl− ion vacancy. Despite the same dopant content, the conductivity of La0.8Ca0.2OCl0.8 was considerably greater than La0.8Mg0.2OCl0.8. This enhancement of the conductivity was influenced by the high ionicity of the Cl− ions, which facilitated the weakening of the La-Cl bond cleavage to conduct inside the lattice. The elongation of the La-La distance, associated with the Cl− ion conduction, could also cause an increase of the conductivity.
AB - The effect of the structural environment on the Cl− ion conductivity was demonstrated in LaOCl-based solid electrolytes. By replacing the La3+ site with lower-valent Mg2+ or Ca2+ ions, the conductivity was enhanced owing to the formation of a Cl− ion vacancy. Despite the same dopant content, the conductivity of La0.8Ca0.2OCl0.8 was considerably greater than La0.8Mg0.2OCl0.8. This enhancement of the conductivity was influenced by the high ionicity of the Cl− ions, which facilitated the weakening of the La-Cl bond cleavage to conduct inside the lattice. The elongation of the La-La distance, associated with the Cl− ion conduction, could also cause an increase of the conductivity.
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U2 - 10.1111/jace.16727
DO - 10.1111/jace.16727
M3 - Article
AN - SCOPUS:85070865921
SN - 0002-7820
VL - 103
SP - 297
EP - 303
JO - Journal of the American Ceramic Society
JF - Journal of the American Ceramic Society
IS - 1
ER -