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

Division of Process and System Engineering

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

20 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

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

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",

language = "English",

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TY - JOUR

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

ASJC Scopus subject areas

UN SDGs

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