Synthesis and ionic conductivity studies of In- and Y-doped Li6Hf2O7 as solid-state electrolyte for all-solid state Li-Ion batteries

Amores, M., Corr, S.A. and Cussen, E.J. (2017) Synthesis and ionic conductivity studies of In- and Y-doped Li6Hf2O7 as solid-state electrolyte for all-solid state Li-Ion batteries. Journal of the Electrochemical Society, 164(1), A6395-A6400. (doi: 10.1149/2.06011701jes)

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Abstract

The development of all solid-state lithium batteries is reliant on suitable high performance solid state electrolytes. Here, we present the synthesis and ionic conductivity of the In- and Y-doped Li6Hf2O7 materials; Li6+xHf2-xMxO7 (M = In3+, Y3+). Microwave-assisted synthesis was used to give phase pure material after heating for 4 hours at 850°C. The ionic conductivity of the materials is increased with the insertion of interstitial lithium ion within the structure from 0.02 to 0.25 mS cm−1 at 174°C and the activation energy for ionic conduction is lowered from 0.97(4) eV to 0.42(3) eV with respect to the undoped material.

Item Type:Articles
Additional Information:This paper was presented at the Chicago, Illinois, Meeting of the IMLB, June 19–24, 2016. This paper is part of the Focus Issue of Selected Papers from IMLB 2016 with Invited Papers Celebrating 25 Years of Lithium Ion Batteries.
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Corr, Professor Serena and Amores Segura, Mr Marco
Authors: Amores, M., Corr, S.A., and Cussen, E.J.
College/School:College of Science and Engineering > School of Chemistry
Journal Name:Journal of the Electrochemical Society
Publisher:Electrochemical Society
ISSN:0013-4651
ISSN (Online):1945-7111
Published Online:21 January 2017
Copyright Holders:Copyright © 2017 The Authors
First Published:First published in Journal of the Electrochemical Society 164(1):A6395-A6400
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
643201Microwave processing for fast, green preparation of insertion electrodesSerena CorrEngineering & Physical Sciences Research Council (EPSRC)EP/K029290/1SCHOOL OF CHEMISTRY
693531High throughput microwave synthesis of Li-ion battery materialsSerena CorrEngineering & Physical Sciences Research Council (EPSRC)EP/N001982/1SCHOOL OF CHEMISTRY