publication . Article . Other literature type . 2006

Thermal Stability of LiPF6 Salt and Li-ion Battery Electrolytes Containing LiPF6

Name: Thermal Stability of LiPF6 Salt and Li-ion Battery Electrolytes Containing LiPF6
Keywords: Environmental Energy Technologies, Li ion battery electrolyte

Yang, Hui; Zhuang, Guorong V.; Ross Jr., Philip N.;

Open Access

Published: 08 Mar 2006 Journal: Journal of Power Sources, volume 161, pages 573-579 (issn: 0378-7753,

Publisher: Elsevier BV

Country: United States

Summary

Abstract

The thermal stability of the neat LiPF6 salt and of 1 molal solutions of LiPF6 in prototypical Li-ion battery solvents was studied with thermogravimetric analysis (TGA) and on-line FTIR. Pure LiPF6 salt is thermally stable up to 380 oK in a dry inert atmosphere, and its decomposition path is a simple dissociation producing LiF as solid and PF5 as gaseous products. In the presence of water (300 ppm) in the carrier gas, its decomposition onset temperature is lowered as a result of direct thermal reaction between LiPF6 and water vapor to form POF3 and HF. No new products were observed in 1 molal solutions of LiPF6 in EC, DMC and EMC by on-line TGA-FTIR analysis. Th...

doi: 10.1016/j.jpowsour.2006.03.058

Subjects

free text keywords: Environmental Energy Technologies, Li ion battery electrolyte, Physical and Theoretical Chemistry, Renewable Energy, Sustainability and the Environment, Electrical and Electronic Engineering, Energy Engineering and Power Technology, Lithium-ion battery, Thermogravimetric analysis, Impurity, Electrolyte, Battery (electricity), Thermal stability, Inorganic chemistry, Chemistry, Thermogravimetry, Analytical chemistry, Inert gas

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