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 journalArticlepeer-review

    18 Citations (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

    Bibliographical note

    Funding Information:
    This work was supported by the institutional program of the Korea Institute of Science and Technology ( KIST-2E27062 ).

    Keywords

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

    ASJC Scopus subject areas

    • Analytical Chemistry
    • General Chemical Engineering
    • Electrochemistry

    Fingerprint

    Dive into the research topics of 'Influence of salt, solvents, and additives on the thermal stability of delithiated cathodes in lithium-ion batteries'. Together they form a unique fingerprint.

    Cite this