Influence of salt, solvents, and additives on the thermal stability of delithiated cathodes in lithium-ion batteries

Yongho Lee, Sang Ok Kim, Junyoung Mun, Min Sik Park, Ki Jae Kim, Kwan Young Lee, Wonchang Choi

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The thermal stability of a fully delithiated cathode, coupled with an inorganic salt, organic solvents, and electrolyte, was evaluated with differential scanning calorimetry (DSC) to address the safety issue of lithium-ion batteries. The DSC experiments revealed that vinylene carbonate (VC)-based systems exhibit decreased thermal stability compared to other coexisting systems. The DSC analysis of the cathode and electrolyte in the presence of VC, employed as additives, confirmed the reduction in thermal stability. Our results suggested that VC additives, which have been recently employed to enhance the electrochemical performance in anodes, negatively affect the thermal properties and safety characteristics of the cathode in lithium-ion batteries.

Original languageEnglish
Pages (from-to)174-180
Number of pages7
JournalJournal of Electroanalytical Chemistry
Volume807
DOIs
Publication statusPublished - 2017 Dec 15

Fingerprint

Carbonates
Differential scanning calorimetry
Cathodes
Thermodynamic stability
Salts
Electrolytes
Organic solvents
Anodes
Thermodynamic properties
Lithium-ion batteries
vinylene carbonate
Experiments

Keywords

  • Additives
  • Cathode
  • Lithium-ion battery
  • Solvents
  • Thermal stability

ASJC Scopus subject areas

  • Analytical Chemistry
  • Chemical Engineering(all)
  • Electrochemistry

Cite this

Influence of salt, solvents, and additives on the thermal stability of delithiated cathodes in lithium-ion batteries. / Lee, Yongho; Kim, Sang Ok; Mun, Junyoung; Park, Min Sik; Kim, Ki Jae; Lee, Kwan Young; Choi, Wonchang.

In: Journal of Electroanalytical Chemistry, Vol. 807, 15.12.2017, p. 174-180.

Research output: Contribution to journalArticle

Lee, Yongho ; Kim, Sang Ok ; Mun, Junyoung ; Park, Min Sik ; Kim, Ki Jae ; Lee, Kwan Young ; Choi, Wonchang. / Influence of salt, solvents, and additives on the thermal stability of delithiated cathodes in lithium-ion batteries. In: Journal of Electroanalytical Chemistry. 2017 ; Vol. 807. pp. 174-180.
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