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

M. Amores; S. A. Corr; E. J. Cussen

doi:10.1149/2.06011701jes

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

M. Amores, S. A. Corr, E. J. Cussen

Pure And Applied Chemistry

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4 Citations (Scopus)

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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 oC. 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 oC 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.

Original language	English
Pages (from-to)	A6395-A6400
Number of pages	6
Journal	Journal of the Electrochemical Society
Volume	164
Issue number	1
DOIs	https://doi.org/10.1149/2.06011701jes
Publication status	Published - 21 Jan 2017

Keywords

solid state lithoum batteries
electrolytes
ionic conductivity
synthesis

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10.1149/2.06011701jesLicence: CC BY 4.0

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Projects

1 Finished

Design and high throughput microwave synthesis of Li-ion battery materials

Cussen, E.

EPSRC (Engineering and Physical Sciences Research Council)

1/10/15 → 30/09/19

Project: Research

Cite this

Amores, M., Corr, S. A., & 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. https://doi.org/10.1149/2.06011701jes

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AB - 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 oC. 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 oC 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.

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