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 journalArticle

11 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

  • Chemistry(all)
  • Chemical Engineering(all)

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    Choi, J. H., Lee, C. L., Park, K. S., Jo, S. M., Lim, D. S., & Kim, I. D. (2014). Sulfur-impregnated MWCNT microball cathode for Li-S batteries. RSC Advances, 4(31), 16062-16066. https://doi.org/10.1039/c4ra01919a