Engineering solid electrolyte interphase for the application of propylene carbonate solvent for graphite anode in low temperate battery

Lihang Chen, Jie Shu, Yunbo Huang, Zhepu Shi, Hao Luo, Zhaoping Liu, Cai Shen

    Research output: Journal PublicationArticlepeer-review

    1 Citation (Scopus)

    Abstract

    Propylene carbonate (PC) is regarded as a good candidate solvent for low-temperature electrolyte applications due to its low melting point (−49.2 °C). However, the co-intercalation of PC into the graphite anode limits its use in low-temperature electrolytes. Along these lines, in this work, by pre-growing a stable solid electrolyte interphase (SEI) on the graphite anode in 1 M LiPF6 FEC: DMC electrolyte, it was found that the co-intercalation of PC into graphite can be inhibited when the latter was cycled in 1 M LiDFOB EC: PC: DEC electrolyte. As was observed by in-situ Electrochemical atomic force microscopy (EC-AFM) measurements, the SEI film has a double-layer structure. Additionally, no gas generation was detected by differential electrochemical mass spectrometry (DEMS) during the cycling, demonstrating the stability of the SEI layer. The addition of PC improves the low-temperature performance of the battery, which can be charged and discharged at −20 °C, while the discharge capacity can reach about 75% of room temperature's discharge capacity. Our work provides a new idea for the design of low-temperature PC-based electrolytes for the next-generation battery systems.

    Original languageEnglish
    Article number153740
    JournalApplied Surface Science
    Volume598
    DOIs
    Publication statusPublished - 1 Oct 2022

    Keywords

    • Graphite
    • Lithium ion batteries
    • Low temperature batteries
    • Propylene carbonate
    • Solid electrolyte interphase (SEI)

    ASJC Scopus subject areas

    • Chemistry (all)
    • Condensed Matter Physics
    • Physics and Astronomy (all)
    • Surfaces and Interfaces
    • Surfaces, Coatings and Films

    Fingerprint

    Dive into the research topics of 'Engineering solid electrolyte interphase for the application of propylene carbonate solvent for graphite anode in low temperate battery'. Together they form a unique fingerprint.

    Cite this