Self-polymerized dopamine as an organic cathode for Li- and Na-ion batteries

Tianyuan Liu, Ki Chul Kim, Byeongyong Lee, Zhongming Chen, Suguru Noda, Seung Soon Jang, Seung Woo Lee

    Research output: Contribution to journalArticle

    64 Citations (Scopus)

    Abstract

    Self-polymerized dopamine is a versatile coating material that has various oxygen and nitrogen functional groups. Here, we demonstrate the redox-active properties of self-polymerized dopamine on the surface of few-walled carbon nanotubes (FWNTs), which can be used as organic cathode materials for both Li- and Na-ion batteries. We reveal the multiple redox reactions between self-polymerized dopamine and electrolyte ions in the high voltage region from 2.5 to 4.1 V vs. Li using both density functional theory (DFT) calculations and electrochemical measurements. Free-standing and flexible hybrid electrodes are assembled using a vacuum filtration method, which have a 3D porous network structure consisting of polydopamine coated FWNTs. The hybrid electrodes exhibit gravimetric capacities of ∼133 mA h g-1 in Li-cells and ∼109 mA h g-1 in Na-cells utilizing double layer capacitance from FWNTs and multiple redox-reactions from polydopamine. The polydopamine itself within the hybrid film can store high gravimetric capacities of ∼235 mA h g-1 in Li-cells and ∼213 mA h g-1 in Na-cells. In addition, the hybrid electrodes show a high rate-performance and excellent cycling stability, suggesting that self-polymerized dopamine is a promising cathode material for organic rechargeable batteries.

    Original languageEnglish
    Pages (from-to)205-215
    Number of pages11
    JournalEnergy and Environmental Science
    Volume10
    Issue number1
    DOIs
    Publication statusPublished - 2017 Jan 1

    Fingerprint

    Carbon Nanotubes
    Dopamine
    Cathodes
    Ions
    Carbon nanotubes
    electrode
    ion
    Redox reactions
    Electrodes
    Secondary batteries
    electrolyte
    Functional groups
    Electrolytes
    functional group
    Density functional theory
    coating
    Capacitance
    Nitrogen
    Vacuum
    Oxygen

    ASJC Scopus subject areas

    • Environmental Chemistry
    • Renewable Energy, Sustainability and the Environment
    • Nuclear Energy and Engineering
    • Pollution

    Cite this

    Self-polymerized dopamine as an organic cathode for Li- and Na-ion batteries. / Liu, Tianyuan; Kim, Ki Chul; Lee, Byeongyong; Chen, Zhongming; Noda, Suguru; Jang, Seung Soon; Lee, Seung Woo.

    In: Energy and Environmental Science, Vol. 10, No. 1, 01.01.2017, p. 205-215.

    Research output: Contribution to journalArticle

    Liu, Tianyuan ; Kim, Ki Chul ; Lee, Byeongyong ; Chen, Zhongming ; Noda, Suguru ; Jang, Seung Soon ; Lee, Seung Woo. / Self-polymerized dopamine as an organic cathode for Li- and Na-ion batteries. In: Energy and Environmental Science. 2017 ; Vol. 10, No. 1. pp. 205-215.
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