Published March 5, 2009 | Version v1
Journal article Metadata-only

Effects of solvents and salt on the thermal stability of charged LiCoO2

Creators

  • 1. State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026 (China)
  • 2. School of Natural Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070 (China)
  • 3. State Key Lab of Explosion Science and Technology, Beijing Institute of Technology, 100081 (China)
  • 4. Waterborne Transportation Institute, Ministry of Communications, Beijing 100088 (China)
  • 5. Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026 (China)

Description

Lithium-ion batteries safety is an issue that should be solved. The thermal stability of Li0.5CoO2 in the presence of solvents/electrolyte and LiPF6 salt were studied by using C80 micro-calorimeter in this paper. It was found that the thermal stability of Li0.5CoO2 either in the presence of cyclic carbonate or linear carbonate is decreased greatly, especially for the linear carbonate-Li0.5CoO2 coexisting system, and the thermal stability of dimethyl carbonate-Li0.5CoO2 coexisting system is the least stable one. LiPF6 can prevent oxygen releasing from Li0.5CoO2 at low temperature, but the delayed reaction will generate more heat at higher temperature. At last, thermal stability of two kinds of electrolytes with Li0.5CoO2 was explored. The LiPF6/ethylene carbonate + dimethyl carbonate + ethylmethyl carbonate-Li0.5CoO2 system shows less thermal stability, which is attributed to the activity between dimethyl carbonate and Li0.5CoO2, as well as agree with the thermal experiment on dimethyl carbonate-Li0.5CoO2 coexisting system

Availability note (English)

Available from http://dx.doi.org/10.1016/j.materresbull.2008.07.006

Additional details

Identifiers

DOI
10.1016/j.materresbull.2008.07.006;
PII
S0025-5408(08)00242-0;

Publishing Information

Journal Title
Materials Research Bulletin
Journal Volume
44
Journal Issue
3
Journal Page Range
p. 543-548
ISSN
0025-5408
CODEN
MRBUAC

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
40069728
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
CALORIMETERS; CARBONATES; COBALT COMPOUNDS; ELECTRIC BATTERIES; ELECTROCHEMISTRY; ELECTROLYTES; ETHYLENE; HEAT; INORGANIC COMPOUNDS; LITHIUM COMPOUNDS; LITHIUM IONS; OXIDES; OXYGEN; SALTS; SOLVENTS; STABILITY
Descriptors DEC
ALKALI METAL COMPOUNDS; ALKENES; CARBON COMPOUNDS; CHALCOGENIDES; CHARGED PARTICLES; CHEMISTRY; ELECTROCHEMICAL CELLS; ELEMENTS; ENERGY; ENERGY STORAGE SYSTEMS; ENERGY SYSTEMS; HYDROCARBONS; IONS; MEASURING INSTRUMENTS; NONMETALS; ORGANIC COMPOUNDS; OXYGEN COMPOUNDS; TRANSITION ELEMENT COMPOUNDS

Optional Information

Copyright
Copyright (c) 2008 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.