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Title: Preparation and characterization of three dimensionally ordered macroporous Li5La3Ta2O12 by colloidal crystal templating for all-solid-state lithium-ion batteries
Authors: Kokal, I.
VAN DEN HAM, Jonathan 
Delsing, A.C.A.
Notten, P.H.L.
Hintzen, H.T.
Issue Date: 2015
Source: CERAMICS INTERNATIONAL, 41 (1), p. 737-741
Abstract: Three dimensionally ordered macroporous (3DOM) membranes of Li5La3Ta2O12 (LLTO) for all-solid-state lithium-ion batteries were prepared by using colloidal crystal templating of mono dispersed polystyrene (PS) spheres combined with sol–gel synthesis of LLTO precursor. During the sol–gel synthesis, the appropriate mixtures of CH3COOLi, La(NO3)3·6H2O and Ta(OC2H5)5 were dissolved in two different solvents to prepare garnet-type LLTO. Various sizes of mono dispersed (1, 3 and 5 μm) PS beads were used as a template to investigate the size effect of template on the network formation of LLTO membranes. The transformation from precursor solutions, which are added onto the PS template, to crystalline phase, was investigated by TG analysis and X-ray powder diffraction (XRPD). The morphology of the PS templates and the 3DOM garnet membranes were investigated by Scanning Electron Microscopy. The templates made from 5 μm PS spheres were found to be the most suitable template to obtain 3DOM membranes of LLTO.
Notes: van den Ham, EJ (reprint author), Hasselt Univ, Agoralaan Bldg D, B-3590 Diepenbeek, Belgium.
Keywords: macroporous membrane; solid-state lithium-ion conductors; garnet; 3DOM; crystal templating
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ISSN: 0272-8842
e-ISSN: 1873-3956
DOI: 10.1016/j.ceramint.2014.08.132
ISI #: 000346216300088
Rights: © 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
Category: A1
Type: Journal Contribution
Validations: ecoom 2016
Appears in Collections:Research publications

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