Lithium Ion Conductivity in A-site Deficient Perovskites Sr&lt;sub&gt;0.5&lt;/sub&gt;La&lt;sub&gt;0.05&lt;/sub&gt;Li&lt;sub&gt;0.35&lt;/sub&gt;□&lt;sub&gt;0.1&lt;/sub&gt;Ti&lt;sub&gt;0.5&lt;/sub&gt;Ta&lt;sub&gt;0.5&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt; and Sr&lt;sub&gt;0.35&lt;/sub&gt;La&lt;sub&gt;0.15&lt;/sub&gt;Li&lt;sub&gt;0.35&lt;/sub&gt;□&lt;sub&gt;0.l5&lt;/sub&gt;Ti&lt;sub&gt;0.5&lt;/sub&gt;Ta&lt;sub&gt;0.5&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt;

Yoshiyuki Inaguma; Tetsuhiro Katsumata; Mitsuru Itoh

doi:10.5796/electrochemistry.68.534

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Lithium Ion Conductivity in A-site Deficient Perovskites Sr0.5La0.05Li0.35□0.1Ti0.5Ta0.5O3 and Sr0.35La0.15Li0.35□0.l5Ti0.5Ta0.5O3

Yoshiyuki Inaguma Tetsuhiro Katsumata Mitsuru Itoh

Year: 2000 Journal: Electrochemistry Vol: 68 (6)Pages: 534-536 Publisher: The Electrochemical Society of Japan

DOI: 10.5796/electrochemistry.68.534

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Abstract

A-site deficient perovskites Sr0.5La0.05Li0.35□0.1Ti0.5Ta0.5O3 and Sr0.35La0.15Li0.35□0.15Ti0.5Ta0.5O3 were synthesized, and their structures and lithium ion conductivities were investigated. Both compounds have cubic symmetry (space group; Pm3m) and the A- and B-site ions are randomly distributed. The ionic conductivities for the bulk part at 300 K are 6.8×10-4 S em-1 for Sr0.5La0.05Li0.35□0.1Ti0.5Ta0.5O3 and 7.2×10-4 S cm-1 for Sr0.35La0.15Li0.35□0.15Ti0.5Ta0.5O3, respectively, which are higher than that of Sr0.5Li0.5Ti0.5Ta0.5O3 (5.5×10-4 S em-1). The ionic conduction of their compounds was found to be based on the vacancy process as was observed for other perovskite-type lithium ion conductors.

Keywords:

Lithium (medication) Ion Perovskite (structure) Ionic conductivity Ionic bonding Chemistry Vacancy defect Conductivity Inorganic chemistry Crystallography Materials science Analytical Chemistry (journal) Physical chemistry

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Lithium Ion Conductivity in A-site Deficient Perovskites Sr<sub>0.5</sub>La<sub>0.05</sub>Li<sub>0.35</sub>□<sub>0.1</sub>Ti<sub>0.5</sub>Ta<sub>0.5</sub>O<sub>3</sub> and Sr<sub>0.35</sub>La<sub>0.15</sub>Li<sub>0.35</sub>□<sub>0.l5</sub>Ti<sub>0.5</sub>Ta<sub>0.5</sub>O<sub>3</sub>

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