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Title: Lithium ion battery with improved safety

Abstract

A lithium battery with improved safety that utilizes one or more additives in the battery electrolyte solution wherein a lithium salt is dissolved in an organic solvent, which may contain propylene, carbonate. For example, a blend of 2 wt % triphenyl phosphate (TPP), 1 wt % diphenyl monobutyl phosphate (DMP) and 2 wt % vinyl ethylene carbonate additives has been found to significantly enhance the safety and performance of Li-ion batteries using a LiPF 6 salt in EC/DEC electrolyte solvent. The invention relates to both the use of individual additives and to blends of additives such as that shown in the above example at concentrations of 1 to 4-wt % in the lithium battery electrolyte. This invention relates to additives that suppress gas evolution in the cell, passivate graphite electrode and protect it from exfoliating in the presence of propylene carbonate solvents in the electrolyte, and retard flames in the lithium batteries.

Inventors:
; ; ;
Publication Date:
Research Org.:
The University Of Chicago, Chicago, IL (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1175697
Patent Number(s):
7,026,074
Application Number:
10/077,569
Assignee:
The University of Chicago (Chicago, IL) OSTI
DOE Contract Number:
W-31-109-ENG-38
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE

Citation Formats

Chen, Chun-hua, Hyung, Yoo Eup, Vissers, Donald R., and Amine, Khalil. Lithium ion battery with improved safety. United States: N. p., 2006. Web.
Chen, Chun-hua, Hyung, Yoo Eup, Vissers, Donald R., & Amine, Khalil. Lithium ion battery with improved safety. United States.
Chen, Chun-hua, Hyung, Yoo Eup, Vissers, Donald R., and Amine, Khalil. Tue . "Lithium ion battery with improved safety". United States. doi:. https://www.osti.gov/servlets/purl/1175697.
@article{osti_1175697,
title = {Lithium ion battery with improved safety},
author = {Chen, Chun-hua and Hyung, Yoo Eup and Vissers, Donald R. and Amine, Khalil},
abstractNote = {A lithium battery with improved safety that utilizes one or more additives in the battery electrolyte solution wherein a lithium salt is dissolved in an organic solvent, which may contain propylene, carbonate. For example, a blend of 2 wt % triphenyl phosphate (TPP), 1 wt % diphenyl monobutyl phosphate (DMP) and 2 wt % vinyl ethylene carbonate additives has been found to significantly enhance the safety and performance of Li-ion batteries using a LiPF6 salt in EC/DEC electrolyte solvent. The invention relates to both the use of individual additives and to blends of additives such as that shown in the above example at concentrations of 1 to 4-wt % in the lithium battery electrolyte. This invention relates to additives that suppress gas evolution in the cell, passivate graphite electrode and protect it from exfoliating in the presence of propylene carbonate solvents in the electrolyte, and retard flames in the lithium batteries.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Apr 11 00:00:00 EDT 2006},
month = {Tue Apr 11 00:00:00 EDT 2006}
}

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