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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概要
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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 Li0.35La0.55TiO3 (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 × 10−4 and 2.6 × 10−5 S cm−1, 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.
著者
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Kanamura Kiyoshi
Department Of Applied Chemistry Graduate School Of Engineering Tokyo Metropolitan University
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Kotobuki Masashi
Department Of Applied Chemistry Graduate School Of Urban Environmental Science Tokyo Metropolitan Un
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Munakata Hirokazu
Department Of Applied Chemistry Graduate School Of Urban Environmental Science Tokyo Metropolitan Un
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OKUDA Sayaka
Department of Applied Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan
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MUNAKATA Hirokazu
Department of Applied Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University
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KANAMURA Kiyoshi
Department of Applied Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University
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KOTOBUKI Masashi
Department of Applied Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University
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OKUDA Sayaka
Department of Applied Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University
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