skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Liquid-solid phase diagrams of binary carbonates for lithium batteries

Abstract

The authors present the liquid-solid phase diagrams that they mapped with a differential scanning calorimeter (DSC) for the following seven binary carbonates: dimethyl carbonate (DMC)-ethylene carbonate (EC), ethyl methyl carbonate (EMC)-EC, EMC-propylene carbonate (PC), EMC-dimethyl ethylene carbonate (DMEC), EMC-isobutylene carbonate (iBC), PC-EC, and EMC-DMC. Many of these are among the most frequently used solvent systems for making the nonaqueous electrolytes for lithium batteries. The phase diagrams of these carbonate systems are all of the simple eutectic type but with vastly different particular features. Comparison of these phase diagrams shows that to expand the liquid region of a carbonate system toward low temperature, the two components of the system need to have comparable melting temperatures and compatible molecular structures. These results are consistent with thermodynamic considerations and have significant practical implications.

Authors:
; ;
Publication Date:
Research Org.:
Army Research Lab., Adelphia, MD (US)
OSTI Identifier:
20080565
Resource Type:
Journal Article
Journal Name:
Journal of the Electrochemical Society
Additional Journal Information:
Journal Volume: 147; Journal Issue: 5; Other Information: PBD: May 2000; Journal ID: ISSN 0013-4651
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 25 ENERGY STORAGE; METAL-NONMETAL BATTERIES; ELECTROLYTES; LITHIUM; PHASE DIAGRAMS; CARBONIC ACID ESTERS; BINARY MIXTURES; MELTING POINTS; MOLECULAR STRUCTURE

Citation Formats

Ding, M.S., Xu, K., and Jow, T.R. Liquid-solid phase diagrams of binary carbonates for lithium batteries. United States: N. p., 2000. Web. doi:10.1149/1.1393419.
Ding, M.S., Xu, K., & Jow, T.R. Liquid-solid phase diagrams of binary carbonates for lithium batteries. United States. doi:10.1149/1.1393419.
Ding, M.S., Xu, K., and Jow, T.R. Mon . "Liquid-solid phase diagrams of binary carbonates for lithium batteries". United States. doi:10.1149/1.1393419.
@article{osti_20080565,
title = {Liquid-solid phase diagrams of binary carbonates for lithium batteries},
author = {Ding, M.S. and Xu, K. and Jow, T.R.},
abstractNote = {The authors present the liquid-solid phase diagrams that they mapped with a differential scanning calorimeter (DSC) for the following seven binary carbonates: dimethyl carbonate (DMC)-ethylene carbonate (EC), ethyl methyl carbonate (EMC)-EC, EMC-propylene carbonate (PC), EMC-dimethyl ethylene carbonate (DMEC), EMC-isobutylene carbonate (iBC), PC-EC, and EMC-DMC. Many of these are among the most frequently used solvent systems for making the nonaqueous electrolytes for lithium batteries. The phase diagrams of these carbonate systems are all of the simple eutectic type but with vastly different particular features. Comparison of these phase diagrams shows that to expand the liquid region of a carbonate system toward low temperature, the two components of the system need to have comparable melting temperatures and compatible molecular structures. These results are consistent with thermodynamic considerations and have significant practical implications.},
doi = {10.1149/1.1393419},
journal = {Journal of the Electrochemical Society},
issn = {0013-4651},
number = 5,
volume = 147,
place = {United States},
year = {2000},
month = {5}
}