Preparation of three dimensionally ordered macroporous Li0.35La0.55TiO3 by colloidal crystal templating process

Dokko, Kaoru; Akutagawa, Nao; Isshiki, Yasuhiro; Hoshina, Keigo; Kanamura, Kiyoshi

doi:10.1016/j.ssi.2005.05.018

Cited by 41 publications

(30 citation statements)

References 15 publications

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“…We have proposed a novel electrode system using ceramic electrolyte with a three-dimensionally ordered macroporous (3DOM) structure [13][14][15]. Figure 1 shows the schematic illustration of the proposed electrode system.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensionally ordered composite electrode between LiMn2O4 and Li1.5Al0.5Ti1.5(PO4)3

Nakano

Dokko

Hara

et al. 2007

Ionics

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A novel electrode system composed of threedimensionally ordered macroporous (3DOM) Li 1.5 Al 0.5-Ti 1.5 (PO 4 ) 3 (LATP) and LiMn 2 O 4 was fabricated by the colloidal crystal templating method and sol-gel process. A LATP nanoparticle for the fabrication of 3DOM-LATP was prepared by a sol-gel process. A suspension containing polystyrene (PS) beads and the LATP nanoparticles was filtrated by using a polycarbonate filter to accumulate PS beads and LATP. The accumulated PS beads had a close-packing structure, and the void between PS beads was filled with LATP nanoparticles. 3DOM-LATP was obtained by heat treatment of the accumulated composite. Li-Mn-O sol was injected by a vacuum impregnation process into the macropores of 3DOM-LATP and then was heated to form three-dimensionally ordered composite materials consisting of LiMn 2 O 4 and LATP. The formation of the composite between 3DOM-LATP and LiMn 2 O 4 were confirmed with scanning electron microscopy and Xray diffraction method. The prepared composite electrode system exhibited a good electrochemical performance.

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Section: Introductionmentioning

confidence: 99%

Three-dimensionally ordered composite electrode between LiMn2O4 and Li1.5Al0.5Ti1.5(PO4)3

Nakano

Dokko

Hara

et al. 2007

Ionics

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“…Recently, we have investigated the synthesis of nanocrystalline garnet compounds at relatively low temperatures by sol-gel synthesis to reduce the internal resistance in those materials [17,18]. Dokko et al proposed and reported the Li 0.35 La 0.55 TiO 3 (LLT) perovskitetype solid electrolyte with three-dimensionally ordered macroporous (3DOM) structure to enlarge the contact area between the solid electrolyte and electrode material [19]. One of the short-comings of this study was that LLT undergoes a reduction of Ti 4 þ to Ti 3 þ during the contact with Lithium metal and since LLT has 3D lithium ion mobility only above 400 K [20], the perovskite-type lithium ion conductor is not favorable in those 3DOM network.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of three dimensionally ordered macroporous Li5La3Ta2O12 by colloidal crystal templating for all-solid-state lithium-ion batteries

Kokal

Ham

Delsing

et al. 2015

Ceramics International

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“…4), 5) We have proposed a novel electrode system using ceramic electrolyte with three-dimensionally ordered macroporous (3DOM) structure having a large surface area. 6),7) By impregnation of active material into the 3DOM pore, large contact area between active material and ceramics electrolyte can be obtained. Such large contact area is expected to provide low internal resistance to the battery.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Li0.35La0.55TiO3 solid electrolyte with two-layered structure for all-solid-state Li battery by a colloidal crystal templating method

Kotobuki

Okuda

Munakata

et al. 2011

J. Ceram. Soc. Japan

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2-layered all-solid-state battery, which is made up of 3DOM (3dimensionally ordered macroporous) porous layer and dense layer, is one of the promising structures for all-solid-state Li battery with Li metal anode. In this paper, an influence of precursor powder size of solid electrolyte on formation of 2-layered electrolyte which is a framework of all-solid-state battery was studied using Li 0.35 La 0.55 TiO 3 (LLT) electrolyte. The particle size strongly affected on morphology of prepared 2-layered structure. In the case of mixture of milled powder with below 1 µm diameter and non-milled powder with sub µm in weight ratio = 3:1, completely sintered 2-layered LLT could be obtained. This would be due to high bulk density of the mixture. Li ion conductivities of obtained 2-layered LLT at bulk and grain boundary were 8.0 © 10 ¹4 and 2.6 © 10 ¹5 S cm ¹1, respectively, which were well consistent with reported values. These findings imply the 2-layered structure can be prepared by many kinds of ceramics if size of precursor powder would be controlled properly.

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Preparation of three dimensionally ordered macroporous Li0.35La0.55TiO3 by colloidal crystal templating process

Cited by 41 publications

References 15 publications

Three-dimensionally ordered composite electrode between LiMn2O4 and Li1.5Al0.5Ti1.5(PO4)3

Three-dimensionally ordered composite electrode between LiMn2O4 and Li1.5Al0.5Ti1.5(PO4)3

Preparation and characterization of three dimensionally ordered macroporous Li5La3Ta2O12 by colloidal crystal templating for all-solid-state lithium-ion batteries

Fabrication of Li0.35La0.55TiO3 solid electrolyte with two-layered structure for all-solid-state Li battery by a colloidal crystal templating method

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