Sulfur-impregnated MWCNT microball cathode for Li-S batteries

Jin Hoon Choi, Cho Long Lee, Kyu Sung Park, Sung Moo Jo, Dae Soon Lim, Il Doo Kim

    Research output: Contribution to journalArticlepeer-review

    15 Citations (Scopus)

    Abstract

    We report a facile synthesis, via an electrostatic spray route, of MWCNT microballs that are used as highly porous templates for effective sulfur impregnation. Mesoporous MWCNT microballs with a three-dimensional interpenetrating network structure offer a promising solution to not only maximize the energy density but also guarantee high power capability. Furthermore, the high specific surface area (175.24 m2 g -1) of the microballs provides large pore volumes suitable for effective sulfur impregnation. A sulfur-impregnated MWCNT cathode showed superior electrochemical cell performance for long-term and high rate capability. In particular, sulfur-impregnated MWCNT microball based electrodes have a significant advantage to secure a mechanically robust carbon structure with better electrical contact during cycling. This journal is

    Original languageEnglish
    Pages (from-to)16062-16066
    Number of pages5
    JournalRSC Advances
    Volume4
    Issue number31
    DOIs
    Publication statusPublished - 2014

    ASJC Scopus subject areas

    • General Chemistry
    • General Chemical Engineering

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