Issue 31, 2014
From the journal:

RSC Advances

Sulfur-impregnated MWCNT microball cathode for Li–S batteries†

Jin-Hoon Choi,acd   Cho-Long Lee,a   Kyu-Sung Park,b   Sung-Moo Jo,c   Dae-Soon Limd  and  Il-Doo Kim*a  

* Corresponding authors

a Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Republic of Korea
E-mail: idkim@kaist.ac.kr

b Texas Materials Institute, The University of Texas at Austin, Austin, TX 78712, USA

c Carbon Convergence Materials Research Division, Korea Institute of Science and Technology, Seoul, Republic of Korea

d Department of Materials Science and Engineering, Korea University, Seoul, Republic of Korea

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.

Graphical abstract: Sulfur-impregnated MWCNT microball cathode for Li–S batteries

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Article information

DOI
https://doi.org/10.1039/C4RA01919A
Article type
Communication
Submitted
05 Mar 2014
Accepted
20 Mar 2014
First published
20 Mar 2014

RSC Adv., 2014,4, 16062-16066

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Sulfur-impregnated MWCNT microball cathode for Li–S batteries

J. Choi, C. Lee, K. Park, S. Jo, D. Lim and I. Kim, RSC Adv., 2014, 4, 16062 DOI: 10.1039/C4RA01919A

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