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Issue 12, 2015
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A hybrid solid electrolyte for flexible solid-state sodium batteries

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Abstract

Development of Na-ion battery electrolyte with high-performance electrochemical properties and high safety is still challenging to achieve. In this study, we report on a NASICON (Na3Zr2Si2PO12)-based composite hybrid solid electrolyte (HSE) designed for use in a high safety solid-state sodium battery for the first time. The composite HSE design yields the required solid-state electrolyte properties for this application, including high ionic conductivity, a wide electrochemical window, and high thermal stability. The solid-state batteries of half-cell type exhibit an initial discharge capacity of 330 and 131 mA h g−1 for a hard carbon anode and a NaFePO4 cathode at a 0.2C-rate of room temperature, respectively. Moreover, a pouch-type flexible solid-state full-cell comprising hard carbon/HSE/NaFePO4 exhibits a highly reversible electrochemical reaction, high specific capacity, and a good, stable cycle life with high flexibility.

Graphical abstract: A hybrid solid electrolyte for flexible solid-state sodium batteries

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Supplementary files

Article information


Submitted
24 Jun 2015
Accepted
18 Aug 2015
First published
27 Aug 2015

This article is Open Access

Energy Environ. Sci., 2015,8, 3589-3596
Article type
Paper

A hybrid solid electrolyte for flexible solid-state sodium batteries

J. Kim, Y. J. Lim, H. Kim, G. Cho and Y. Kim, Energy Environ. Sci., 2015, 8, 3589
DOI: 10.1039/C5EE01941A

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    [Original citation] - Published by The Royal Society of Chemistry.

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