Improvement of Li-ion conductivity in A-site disordering lithium-lanthanum-titanate perovskite oxides by adding LiF in synthesis

Toyoki Okumura; Koji Yokoo; Tomokazu Fukutsuka; Yoshiharu Uchimoto; Morihiro Saito; Koji Amezawa

doi:10.1016/j.jpowsour.2008.10.056

Improvement of Li-ion conductivity in A-site disordering lithium-lanthanum-titanate perovskite oxides by adding LiF in synthesis

Toyoki Okumura, Koji Yokoo, Tomokazu Fukutsuka, Yoshiharu Uchimoto, Morihiro Saito, Koji Amezawa

IMRAM - Division of Process and System Engineering

Research output: Contribution to journal › Article › peer-review

22 Citations (Scopus)

Abstract

La_0.56-yLi_0.33TiO_3-3yF_3y (y = 0.017, 0.05) were prepared by a conventional solid-state reaction from a mixture of La₂O₃, LiCO₃, TiO_2, and 10% excess LiF. The variation of the lattice parameter with increase of y value in La_0.56-yLi_0.33TiO_3-3yF_3y was different from that in conventional lithium-lanthanum-titanate series perovskite oxides, La_0.56-yLi_0.33+3yTiO₃. Bulk Li-ion conductivities of the La_0.56-yLi_0.33TiO_3-3yF_3y are higher than those of La_0.56-yLi_0.33+3yTiO₃. Li-ion conductivity of La_0.56-yLi_0.33TiO_3-3yF_3y (y = 0.017) was 2.30 × 10^-3 S cm^-1 at 30 °C, which is, to our knowledge, one of the highest Li-ion conductivities in the oxide compounds.

Original language	English
Pages (from-to)	536-538
Number of pages	3
Journal	Journal of Power Sources
Volume	189
Issue number	1
DOIs	https://doi.org/10.1016/j.jpowsour.2008.10.056
Publication status	Published - 2009 Apr 1

Keywords

Li-ion conductor
Perovskite structure
Solid-state electrolyte

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.jpowsour.2008.10.056

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title = "Improvement of Li-ion conductivity in A-site disordering lithium-lanthanum-titanate perovskite oxides by adding LiF in synthesis",

abstract = "La0.56-yLi0.33TiO3-3yF3y (y = 0.017, 0.05) were prepared by a conventional solid-state reaction from a mixture of La2O3, LiCO3, TiO2, and 10% excess LiF. The variation of the lattice parameter with increase of y value in La0.56-yLi0.33TiO3-3yF3y was different from that in conventional lithium-lanthanum-titanate series perovskite oxides, La0.56-yLi0.33+3yTiO3. Bulk Li-ion conductivities of the La0.56-yLi0.33TiO3-3yF3y are higher than those of La0.56-yLi0.33+3yTiO3. Li-ion conductivity of La0.56-yLi0.33TiO3-3yF3y (y = 0.017) was 2.30 × 10-3 S cm-1 at 30 °C, which is, to our knowledge, one of the highest Li-ion conductivities in the oxide compounds.",

keywords = "Li-ion conductor, Perovskite structure, Solid-state electrolyte",

author = "Toyoki Okumura and Koji Yokoo and Tomokazu Fukutsuka and Yoshiharu Uchimoto and Morihiro Saito and Koji Amezawa",

year = "2009",

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doi = "10.1016/j.jpowsour.2008.10.056",

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T1 - Improvement of Li-ion conductivity in A-site disordering lithium-lanthanum-titanate perovskite oxides by adding LiF in synthesis

AU - Okumura, Toyoki

AU - Yokoo, Koji

AU - Fukutsuka, Tomokazu

AU - Uchimoto, Yoshiharu

AU - Saito, Morihiro

AU - Amezawa, Koji

PY - 2009/4/1

Y1 - 2009/4/1

N2 - La0.56-yLi0.33TiO3-3yF3y (y = 0.017, 0.05) were prepared by a conventional solid-state reaction from a mixture of La2O3, LiCO3, TiO2, and 10% excess LiF. The variation of the lattice parameter with increase of y value in La0.56-yLi0.33TiO3-3yF3y was different from that in conventional lithium-lanthanum-titanate series perovskite oxides, La0.56-yLi0.33+3yTiO3. Bulk Li-ion conductivities of the La0.56-yLi0.33TiO3-3yF3y are higher than those of La0.56-yLi0.33+3yTiO3. Li-ion conductivity of La0.56-yLi0.33TiO3-3yF3y (y = 0.017) was 2.30 × 10-3 S cm-1 at 30 °C, which is, to our knowledge, one of the highest Li-ion conductivities in the oxide compounds.

AB - La0.56-yLi0.33TiO3-3yF3y (y = 0.017, 0.05) were prepared by a conventional solid-state reaction from a mixture of La2O3, LiCO3, TiO2, and 10% excess LiF. The variation of the lattice parameter with increase of y value in La0.56-yLi0.33TiO3-3yF3y was different from that in conventional lithium-lanthanum-titanate series perovskite oxides, La0.56-yLi0.33+3yTiO3. Bulk Li-ion conductivities of the La0.56-yLi0.33TiO3-3yF3y are higher than those of La0.56-yLi0.33+3yTiO3. Li-ion conductivity of La0.56-yLi0.33TiO3-3yF3y (y = 0.017) was 2.30 × 10-3 S cm-1 at 30 °C, which is, to our knowledge, one of the highest Li-ion conductivities in the oxide compounds.

KW - Li-ion conductor

KW - Perovskite structure

KW - Solid-state electrolyte

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Improvement of Li-ion conductivity in A-site disordering lithium-lanthanum-titanate perovskite oxides by adding LiF in synthesis

Abstract

Keywords

UN SDGs

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