Measurements of the thermal conductivity of poly(ethylene oxide)-lithium salt electrolytes
- Lawrence Berkeley National Lab., CA (United States). Environmental Energy Technologies Div.
Thermal management is essential in assuring the safe and efficient operation of rechargeable lithium batteries for such application as electric vehicle propulsion. The thermal conductivity of polymer electrolytes is one of the important parameters characterizing heat transport in lithium polymer batteries. Experimental measurements, over the temperature range from 25 C (298 K) to 150 C (423 K), of the thermal conductivity of poly(ethylene oxide)-lithium salt electrolytes by a guarded heat flowmeter are described. Thermal conductivities of the poly(ethylene oxide) (PEO)-LiCF{sub 3}SO{sub 3} polymer electrolytes were found to be relatively constant for the electrolytes with various concentrations of the lithium salt. Also, the thermal conductivity of the PEO-lithium salt electrolytes decreases with increasingly amorphous structure according to the order: PEO-LiClO{sub 4} {approx_equal} PEO-LiCF{sub 3}SO{sub 3} > PEO-LiN(CF{sub 3}SO{sub 2}){sub 2} > PEO-LiC(CF{sub 3}SO{sub 2}){sub 3}.
- Sponsoring Organization:
- USDOE Assistant Secretary for Energy Efficiency and Renewable Energy, Washington, DC (United States)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 564085
- Journal Information:
- Journal of the Electrochemical Society, Vol. 144, Issue 11; Other Information: PBD: Nov 1997
- Country of Publication:
- United States
- Language:
- English
Similar Records
Influence of salt on the adsorption of poly(ethylene oxide) onto battery grade metal oxides and electrically conductive carbon blacks
Synthesis of polymer electrolyte membranes from cellulose acetate/poly(ethylene oxide)/LiClO{sub 4} for lithium ion battery application