Fabrication of all-solid-state rechargeable lithium-ion battery using mille-feuille structure of Li0.35La0.55TiO3

Kotobuki, Masashi; Munakata, Hirokazu; Kanamura, Kiyoshi

doi:10.1016/j.jpowsour.2010.11.139

Cited by 15 publications

(5 citation statements)

References 13 publications

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“…Bulk-type ASLBs based on LLTO have been systematically investigated by Kanamura's group. [306][307][308][309][310][311] The general way is to build an electrolyte structure typically composing of a dense layer and a 3D porous scaffold, into which the electrode materials are introduced by wet chemical method followed by heat treatment. This process could reduce the sintering temperature for good electrolyte/electrode contact.…”

Section: Electrolytes For All Solid-state Lithium-metal Batteriesmentioning

confidence: 99%

Oxide Electrolytes for Lithium Batteries

et al. 2015

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As the most promising candidate of the solid electrolyte materials for future lithium batteries, oxide electrolytes with highlithium-ion conductivity have experienced a rapid development in the past few decades. Existing oxide electrolytes are divided into two groups, i.e., crystalline group including NASICON, perovskite, garnet, and some newly developing structures, and amorphous/glass group including Li 2 O-MO x (M = Si, B, P, etc.) and LiPON-related materials. After a historical perspective on the general development of oxide electrolytes, we try to give a comprehensive review on the oxide electrolytes with high-lithium-ion conductivity, with special emphasis on the aspect of materials selection and design for applications as solid electrolytes in lithium batteries. Some successful examples and meaningful attempts on the incorporation of oxide electrolytes in lithium batteries are also presented. In the conclusion part, an outlook for the future direction of oxide electrolytes development is given.

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Section: Electrolytes For All Solid-state Lithium-metal Batteriesmentioning

confidence: 99%

Oxide Electrolytes for Lithium Batteries

et al. 2015

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“…[5][6][7][8][9][10][11][12][13][14][15][16] However, these materials suffer from electrochemical instability, since the reduction of Ti 4+ into Ti 3+ occurs at less than 1.9 V vs. Li + /Li. [17][18][19] Thus, one cannot choose negative electrodes that react at less than 1.9 V vs. Li + /Li, as this will result in a reduction in the energy density of the battery. In this respect, among known lithium conductive oxides, garnet-type Li x La 3 M 2 O 7 (M = Zr, Nb, Ta, Sb, Bi, etc.)…”

Section: Introductionmentioning

confidence: 99%

First-principles density functional calculation of electrochemical stability of fast Li ion conducting garnet-type oxides

Nakayama

Kotobuki

Munakata

et al. 2012

Phys. Chem. Chem. Phys.

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The research and development of rechargeable all-ceramic lithium batteries are vital to realize their considerable advantages over existing commercial lithium ion batteries in terms of size, energy density, and safety. A key part of such effort is the development of solid-state electrolyte materials with high Li(+) conductivity and good electrochemical stability; lithium-containing oxides with a garnet-type structure are known to satisfy the requirements to achieve both features. Using first-principles density functional theory (DFT), we investigated the electrochemical stability of garnet-type Li(x)La(3)M(2)O(12) (M = Ti, Zr, Nb, Ta, Sb, Bi; x = 5 or 7) materials against Li metal. We found that the electrochemical stability of such materials depends on their composition and structure. The electrochemical stability against Li metal was improved when a cation M was chosen with a low effective nuclear charge, that is, with a high screening constant for an unoccupied orbital. In fact, both our computational and experimental results show that Li(7)La(3)Zr(2)O(12) and Li(5)La(3)Ta(2)O(12) are inert to Li metal. In addition, the linkage of MO(6) octahedra in the crystal structure affects the electrochemical stability. For example, perovskite-type La(1/3)TaO(3) was found, both experimentally and computationally, to react with Li metal owing to the corner-sharing MO(6) octahedral network of La(1/3)TaO(3), even though it has the same constituent elements as garnet-type Li(5)La(3)Ta(2)O(12) (which is inert to Li metal and features isolated TaO(6) octahedra).

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“…It has been demonstrated that the pre-treatment of substrate by surfactant solution significantly improved the filling ratio. 32 The SDBS solution improved the wettability of LCO to Li-La-Ti-O sol, which resulted in higher filling ratio of gel in LCO substrate. After gelation, the composite of LCO and Li-La-Ti-O gel was heated at 120 • C to facilitate further condensation and remove solvents.…”

Section: Resultsmentioning

confidence: 96%

3D Structure of Electrode with Inorganic Solid Electrolyte

Zheng

Wang

2012

J. Electrochem. Soc.

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A 3D structure of electrode with inorganic solid electrolyte was prepared by sol-gel process. Li 0.35 La 0.55 TiO 3 (LLTO) precursor sol was injected into the pore networks of the sintered LiCoO 2 (LCO) with 72% relative density. After gelation and following heat treatments, composite material composed of sintered LCO and amorphous LLTO was obtained. The composite electrode had up to 93% relative density. The electrodes delivered 84% of the theoretical capacity at C/20 discharge rate. And 46% of the theoretical capacity was maintained even at C/2. The high performance resulted from the fact that the electrodes provided continuous paths for electron conduction and ionic transport.

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Fabrication of all-solid-state rechargeable lithium-ion battery using mille-feuille structure of Li0.35La0.55TiO3

Cited by 15 publications

References 13 publications

Oxide Electrolytes for Lithium Batteries

Oxide Electrolytes for Lithium Batteries

First-principles density functional calculation of electrochemical stability of fast Li ion conducting garnet-type oxides

3D Structure of Electrode with Inorganic Solid Electrolyte

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