A novel polymer electrolyte membrane for application in solid state lithium metal battery

A novel polymer electrolyte membrane for application in solid state lithium metal battery Polyethylene oxide (PEO), dimethyl sulphoxide (DMSO) and lithium trifluoromethanesulfonate (LiCF3SO3) salts are combined into a composite polymer electrolyte studied for application in lithium metal battery. FTIR measurements and AFM images are used to reveal the structure and morphology of the polymer electrolyte, while electrochemical impedance spectroscopy (EIS), chronoamperometry and voltammetry are employed for determining the electrolyte conductivity, lithium transference number, chemical and electrochemical stability, respectively. The data reveal a suitable conductivity and lithium transport, i.e., δ above 10−4Scm−1 and tLi+ about 0.5, at moderate temperature, which allow the use of the membrane and a LiFePO4 olivine cathode in an efficient lithium metal cell delivering a capacity of 130mAhg−1 at about 3.4V, and operating at 50°C. This relatively low operating temperature, the good electrochemical properties, and the polymer configuration of the PEO-DMSO-LiCF3SO3 membrane suggest it as a viable solution for application in high energy lithium metal battery. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Solid State Ionics Elsevier

A novel polymer electrolyte membrane for application in solid state lithium metal battery

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Publisher
Elsevier
Copyright
Copyright © 2018 Elsevier B.V.
ISSN
0167-2738
eISSN
1872-7689
D.O.I.
10.1016/j.ssi.2017.12.039
Publisher site
See Article on Publisher Site

Abstract

Polyethylene oxide (PEO), dimethyl sulphoxide (DMSO) and lithium trifluoromethanesulfonate (LiCF3SO3) salts are combined into a composite polymer electrolyte studied for application in lithium metal battery. FTIR measurements and AFM images are used to reveal the structure and morphology of the polymer electrolyte, while electrochemical impedance spectroscopy (EIS), chronoamperometry and voltammetry are employed for determining the electrolyte conductivity, lithium transference number, chemical and electrochemical stability, respectively. The data reveal a suitable conductivity and lithium transport, i.e., δ above 10−4Scm−1 and tLi+ about 0.5, at moderate temperature, which allow the use of the membrane and a LiFePO4 olivine cathode in an efficient lithium metal cell delivering a capacity of 130mAhg−1 at about 3.4V, and operating at 50°C. This relatively low operating temperature, the good electrochemical properties, and the polymer configuration of the PEO-DMSO-LiCF3SO3 membrane suggest it as a viable solution for application in high energy lithium metal battery.

Journal

Solid State IonicsElsevier

Published: Apr 1, 2018

References

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