Issue 14, 2017
From the journal:

Journal of Materials Chemistry A

A hybrid polymer/oxide/ionic-liquid solid electrolyte for Na-metal batteries

Shufeng Song, ORCID logo *a   Masashi Kotobuki,b   Feng Zheng,b   Chaohe Xu,a   Serguei V. Savilov,c   Ning Hu,*ad   Li Lu,be   Yu Wang ORCID logo f  and  Wei Dong Z. Lif  

* Corresponding authors

a College of Aerospace Engineering, Chongqing University, Chongqing, P. R. China
E-mail: sfsong@cqu.edu.cn

b Department of Mechanical Engineering, National University of Singapore, Singapore, Singapore

c Department of Physical Chemistry Engineering, M.V. Lomonosov Moscow State University, Russia

d The State Key Laboratory of Mechanical Transmissions, Chongqing University, Chongqing 400044, P. R. China

e National University of Singapore Suzhou Research Institute, Suzhou, P. R. China

f School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, P. R. China

Abstract

The development of solid electrolytes with superior electrical and electrochemical performances for the room-temperature operation of sodium (Na)-based batteries is at the infant stage and still remains a challenge. Herein, we, for the first time, report hybrid solid electrolytes consisting of PEO20–NaClO4–5% SiO2–x% Emim FSI (x = 50, 70) designed for solid-state Na-metal batteries. The hybrid design yields a solid electrolyte featuring a high room-temperature ionic conductivity of 1.3 × 10−3 S cm−1, suitable mechanical property, a wide voltage stability window of 4.2 V and a high Na+ transference number of 0.61. A prototypical Na-metal battery using this hybrid solid electrolyte demonstrates promising long-term cycling performances at room temperature and at an elevated temperature of 60 °C for 100 cycles. The finding implies that the hybrid solid electrolyte is promising for Na-metal batteries operating at room temperature.

Graphical abstract: A hybrid polymer/oxide/ionic-liquid solid electrolyte for Na-metal batteries

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Article information

DOI
https://doi.org/10.1039/C6TA11165C
Article type
Paper
Submitted
28 Dec 2016
Accepted
15 Feb 2017
First published
15 Feb 2017

J. Mater. Chem. A, 2017,5, 6424-6431

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A hybrid polymer/oxide/ionic-liquid solid electrolyte for Na-metal batteries

S. Song, M. Kotobuki, F. Zheng, C. Xu, S. V. Savilov, N. Hu, L. Lu, Y. Wang and W. D. Z. Li, J. Mater. Chem. A, 2017, 5, 6424 DOI: 10.1039/C6TA11165C

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