Structural environment of chloride ion‐conducting solids based on lanthanum oxychloride | Zendy

Nunotani Naoyoshi | Zendy; Misran Muhammad Radzi Iqbal Bin | Zendy; Inada Miki | Zendy; Uchiyama Tomoki | Zendy; Uchimoto Yoshiharu | Zendy; Imanaka Nobuhito | Zendy

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Structural environment of chloride ion‐conducting solids based on lanthanum oxychloride

Author(s) -

Nunotani Naoyoshi,

Misran Muhammad Radzi Iqbal Bin,

Inada Miki,

Uchiyama Tomoki,

Uchimoto Yoshiharu,

Imanaka Nobuhito

Publication year - 2020

Publication title -

journal of the american ceramic society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.9

H-Index - 196

eISSN - 1551-2916

pISSN - 0002-7820

DOI - 10.1111/jace.16727

Subject(s) - conductivity , lanthanum , ion , chloride , chemistry , dopant , inorganic chemistry , electrolyte , vacancy defect , fast ion conductor , electrical resistivity and conductivity , ionic conductivity , materials science , crystallography , doping , organic chemistry , optoelectronics , electrode , electrical engineering , engineering

The effect of the structural environment on the Cl − ion conductivity was demonstrated in LaOCl‐based solid electrolytes. By replacing the La 3+ site with lower‐valent Mg 2+ or Ca 2+ ions, the conductivity was enhanced owing to the formation of a Cl − ion vacancy. Despite the same dopant content, the conductivity of La 0.8 Ca 0.2 OCl 0.8 was considerably greater than La 0.8 Mg 0.2 OCl 0.8 . 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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