Lithium ion conductivity in the perovskite-type LiTaO3-SrTiO3 solid solution

Inaguma, Yoshiyuki; Matsui, Yukiteru; Shan, Yue Jin; Itoh, Makoto; Nakamura, Tetsurō

doi:10.1016/0167-2738(95)00036-6

Cited by 84 publications

(35 citation statements)

References 4 publications

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“…The enhanced cycle life performance due to surface modification is similar to results reported previously [12][13][14][15][16][17][18][19][20]. In the [Li,La]TiO 3 system, the composition, structure, and phase are significant factors when considering ionic and electronic conductivities [22][23][24][25]. The phase of the lithium lanthanum titanate was investigated as a function of temperature using XRD and TEM; the powders annealed at 400 or 700°C were confirmed to have amorphous and crystalline phases, respectively, with a perovskite structure.…”

Section: Resultssupporting

confidence: 89%

“…In this study, lithium lanthanum titanate was employed as the coating material. This perovskite-type compound has received considerable attention as a solid electrolyte owing to its high lithium ionic conductivity [22][23][24][25][26][27][28]. Surface coating results in enhanced properties of the cathode material, because it suppresses the formation of an unwanted surface layer originating from the dissolution of cations (e.g., Co, Ni, and Mn) and/or the attack of HF on the electrolyte [15,29,30].…”

Section: Introductionmentioning

confidence: 99%

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Surface modification effects of [Li,La]TiO3 on the electrochemical performance of Li[Ni0.35Co0.3Mn0.35]O2 cathode material for lithium–ion batteries

Jung

Kim

et al. 2011

J Appl Electrochem

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Surface modification of Li[Ni 0.35 Co 0.3 Mn 0.35 ] O 2 as a cathode material of lithium-ion batteries was carried out by hydrothermal treatment using lithium lanthanum titanate ([Li,La]TiO 3 ). The modified surfaces were analyzed by morphology observation using transmission electron microscopy and by element investigation using X-ray photoelectron spectroscopy. It was thereupon found that the [Li,La]TiO 3 -coated layer formed by the surface modification played a definitive role in suppressing the solid electrolyte interface during repeated charge and discharge cycles. In addition, the thermal stability was enhanced by coated layer, resulting in an increase of the onset temperature to occur an exothermic reaction during thermal runaway.

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Section: Resultssupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Surface modification effects of [Li,La]TiO3 on the electrochemical performance of Li[Ni0.35Co0.3Mn0.35]O2 cathode material for lithium–ion batteries

Jung

Kim

et al. 2011

J Appl Electrochem

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“…Lithium ion-conducting perovskite-type oxides such as La 2/3-x Li 3x TiO 3 show high ionic conductivities as high as 10 -5 -10 -3 Scm -1 at room temperature [1][2][3][4][5][6][7][8][9][10][11][12] . Their high conductivities are attributed to the percolation-controlled diffusion of lithium ions via vacancies in the A-site-deficient perovskites (general formula of perovskite-type oxide: ABO 3 ).…”

Section: Introductionmentioning

confidence: 99%

Predominant Factor of Activation Energy for Ionic Conductivity in Perovskite-Type Lithium Ion-Conducting Oxides

2010

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The predominant factors of the activation energy for ionic conductivity in perovskite-type lithium ion-conducting oxides were discussed in terms of structural distortion. As the result, the activation energies in almost all compounds are governed by a factor, a p /(B large -O) (a p : perovskite parameter (cube root of cell volume per formula unit), (B large -O) : inter-atomic distance between larger B ion and oxygen ion). This finding implies that (i) the larger B ion gives rise to structural distortion such as the tilt of the BO 6 octahedra, which decrease the bottleneck size, (ii) the resultant smaller bottleneck determines the activation energies for ionic diffusion.

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“…The ABC 3 with perovskite structure is of particular interest for its high lithium ion conductivity at room temperature, such as La~MrLil_3x_yNbO 3 (M = Ag and Na) [2], L%~Lao.67.xTiO 3 [3][4][5][6][7], LixSrl_~TaxTiL_xO 3 [8] and Li2xSrl_2~Mo.5_~Ta0.5+xO3 (M = Cr, Fe, Co, AI, Ga, In, Y) [9]. They are one of the families with the highest conductivities so far reported Li-ion conducting materials.…”

Section: Introductionmentioning

confidence: 99%

The study of lithium fast ion conductors of Li3xLa0.67−xScyTi1−2yNbyO3 system

Chen

2002

Ionics

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Abstract. Perovskite-type lithium fast ion conductors of Lis~Lao.67_~ScyTi~.2yNbyO3 system were prepared by solid state reaction. X-Ray powder diffraction shows that perovskite solid solution form in the ranges of x = 0.10, y<0.10. AC impedance measurements indicate that the bulk conductivities and the total conductivities are of the order of 10 "4 S.cm "~ and 10 5 S-cm "~ at 25 ~ respectively. The compositions have low bulk activation energies of about 17 kJ/mol in the temperature ranges of 298 -523 K and total activation energies of about 37 kJ/mol in the temperature ranges of 298 -523 K.

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Lithium ion conductivity in the perovskite-type LiTaO3-SrTiO3 solid solution

Cited by 84 publications

References 4 publications

Surface modification effects of [Li,La]TiO3 on the electrochemical performance of Li[Ni0.35Co0.3Mn0.35]O2 cathode material for lithium–ion batteries

Surface modification effects of [Li,La]TiO3 on the electrochemical performance of Li[Ni0.35Co0.3Mn0.35]O2 cathode material for lithium–ion batteries

Predominant Factor of Activation Energy for Ionic Conductivity in Perovskite-Type Lithium Ion-Conducting Oxides

The study of lithium fast ion conductors of Li3xLa0.67−xScyTi1−2yNbyO3 system

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