A fast and efficient pre-doping approach to high energy density lithium-ion hybrid capacitors

Minho Kim, Fan Xu, Jin Hong Lee, Cheolsoo Jung, Soon Man Hong, Q. M. Zhang, Chong Min Koo

    Research output: Contribution to journalArticle

    45 Citations (Scopus)

    Abstract

    We demonstrate that the internal short (IS) approach is a fast and efficient process for lithium pre-doping in lithium-ion capacitors. Direct contact between the graphite electrode and lithium metal leads to very fast but controllable lithium pre-doping into graphite due to the large contacting area in the excess electrolyte medium, facilitating not only fast lithium intercalation into graphite but also fast dissipation of reaction heat generated during this process. LIC cells pre-doped through the IS method exhibit remarkably higher coulombic efficiency and longer cycle life than those of the cells prepared using conventional pre-doping methods such as electrochemical (EC) and external short circuit (ESC) methods. These results indicate that the IS pre-doping approach can significantly improve the anode manufacturing speed and reduce the cost of high energy density lithium-ion capacitors. 2014 This journal is

    Original languageEnglish (US)
    Pages (from-to)10029-10033
    Number of pages5
    JournalJournal of Materials Chemistry A
    Volume2
    Issue number26
    DOIs
    StatePublished - Jul 14 2014

    Fingerprint

    Lithium
    Capacitors
    Doping (additives)
    Ions
    Graphite
    Graphite electrodes
    Intercalation
    Short circuit currents
    Electrolytes
    Life cycle
    Anodes
    Metals
    Costs

    All Science Journal Classification (ASJC) codes

    • Chemistry(all)
    • Renewable Energy, Sustainability and the Environment
    • Materials Science(all)

    Cite this

    Kim, Minho ; Xu, Fan ; Lee, Jin Hong ; Jung, Cheolsoo ; Hong, Soon Man ; Zhang, Q. M. ; Koo, Chong Min. / A fast and efficient pre-doping approach to high energy density lithium-ion hybrid capacitors. In: Journal of Materials Chemistry A. 2014 ; Vol. 2, No. 26. pp. 10029-10033.
    @article{77d6d2e9440b4dfb90ad6a3a0d6dda50,
    title = "A fast and efficient pre-doping approach to high energy density lithium-ion hybrid capacitors",
    abstract = "We demonstrate that the internal short (IS) approach is a fast and efficient process for lithium pre-doping in lithium-ion capacitors. Direct contact between the graphite electrode and lithium metal leads to very fast but controllable lithium pre-doping into graphite due to the large contacting area in the excess electrolyte medium, facilitating not only fast lithium intercalation into graphite but also fast dissipation of reaction heat generated during this process. LIC cells pre-doped through the IS method exhibit remarkably higher coulombic efficiency and longer cycle life than those of the cells prepared using conventional pre-doping methods such as electrochemical (EC) and external short circuit (ESC) methods. These results indicate that the IS pre-doping approach can significantly improve the anode manufacturing speed and reduce the cost of high energy density lithium-ion capacitors. 2014 This journal is",
    author = "Minho Kim and Fan Xu and Lee, {Jin Hong} and Cheolsoo Jung and Hong, {Soon Man} and Zhang, {Q. M.} and Koo, {Chong Min}",
    year = "2014",
    month = "7",
    day = "14",
    doi = "10.1039/c4ta00678j",
    language = "English (US)",
    volume = "2",
    pages = "10029--10033",
    journal = "Journal of Materials Chemistry A",
    issn = "2050-7488",
    publisher = "Royal Society of Chemistry",
    number = "26",

    }

    A fast and efficient pre-doping approach to high energy density lithium-ion hybrid capacitors. / Kim, Minho; Xu, Fan; Lee, Jin Hong; Jung, Cheolsoo; Hong, Soon Man; Zhang, Q. M.; Koo, Chong Min.

    In: Journal of Materials Chemistry A, Vol. 2, No. 26, 14.07.2014, p. 10029-10033.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - A fast and efficient pre-doping approach to high energy density lithium-ion hybrid capacitors

    AU - Kim, Minho

    AU - Xu, Fan

    AU - Lee, Jin Hong

    AU - Jung, Cheolsoo

    AU - Hong, Soon Man

    AU - Zhang, Q. M.

    AU - Koo, Chong Min

    PY - 2014/7/14

    Y1 - 2014/7/14

    N2 - We demonstrate that the internal short (IS) approach is a fast and efficient process for lithium pre-doping in lithium-ion capacitors. Direct contact between the graphite electrode and lithium metal leads to very fast but controllable lithium pre-doping into graphite due to the large contacting area in the excess electrolyte medium, facilitating not only fast lithium intercalation into graphite but also fast dissipation of reaction heat generated during this process. LIC cells pre-doped through the IS method exhibit remarkably higher coulombic efficiency and longer cycle life than those of the cells prepared using conventional pre-doping methods such as electrochemical (EC) and external short circuit (ESC) methods. These results indicate that the IS pre-doping approach can significantly improve the anode manufacturing speed and reduce the cost of high energy density lithium-ion capacitors. 2014 This journal is

    AB - We demonstrate that the internal short (IS) approach is a fast and efficient process for lithium pre-doping in lithium-ion capacitors. Direct contact between the graphite electrode and lithium metal leads to very fast but controllable lithium pre-doping into graphite due to the large contacting area in the excess electrolyte medium, facilitating not only fast lithium intercalation into graphite but also fast dissipation of reaction heat generated during this process. LIC cells pre-doped through the IS method exhibit remarkably higher coulombic efficiency and longer cycle life than those of the cells prepared using conventional pre-doping methods such as electrochemical (EC) and external short circuit (ESC) methods. These results indicate that the IS pre-doping approach can significantly improve the anode manufacturing speed and reduce the cost of high energy density lithium-ion capacitors. 2014 This journal is

    UR - http://www.scopus.com/inward/record.url?scp=84902275187&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=84902275187&partnerID=8YFLogxK

    U2 - 10.1039/c4ta00678j

    DO - 10.1039/c4ta00678j

    M3 - Article

    AN - SCOPUS:84902275187

    VL - 2

    SP - 10029

    EP - 10033

    JO - Journal of Materials Chemistry A

    JF - Journal of Materials Chemistry A

    SN - 2050-7488

    IS - 26

    ER -