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 poly...

Full description

Saved in:
Bibliographic Details
Published in:Solid state ionics 2018-04, Vol.317, p.97-102
Main Authors: Zewde, Berhanu W., Carbone, Lorenzo, Greenbaum, Steve, Hassoun, Jusef
Format: Article
Language:English
Subjects:
Batteries
Battery
Dimethyl sulfoxide
Dimethyl sulphoxide (DMSO)
Electrochemical analysis
Electrochemical impedance spectroscopy
Electrolytes
Lithium
Lithium batteries
Lithium-metal
Morphology
Olivine
Operating temperature
Organic chemistry
Polyethylene
Polyethylene oxide (PEO)
Polyethylenes
Polymers
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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. •PEO-DMSO-LiCF3SO3 is reported as polymer electrolyte for Li-metal battery.•FTIR, AFM, EIS, chronoamperometry and voltammetry are used for the study.•The membrane reveals conductivity above 10−4Scm−1 and a tLi+ of about 0.5.•Rechargeable lithium metal cell using the membrane and LiFePO4 is reported.•The cell delivers a capacity of 130mAhg−1 at about 3.4V at 50°C.
ISSN:0167-2738
1872-7689
DOI:10.1016/j.ssi.2017.12.039