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CARBONLETT, vol. 27, no. 1, pp.12-17, 2018

DOI: http://dx.doi.org/ DOI:10.5714/CL.2018.27.012

The effect of pore structure and surface properties of carbon nanotube films on the performance of a lithium sulfur battery

Hyeonjun Song1, Yunjae Hwang1, Vimal Tiwari Kumar2 and Youngjin Jeong1,2,♠

Affiliation: 1Department of Information Communication, Materials, and Chemistry Convergence Technology, Soongsil University, Seoul 06978, Korea
2Department of Organic Materials and Fiber Engineering, Soongsil University, Seoul 06978, Korea

Abstract: We fabricated a Li-S battery with post-treated carbon nanotube (CNT) films which offered better support for sulfur, and investigated the effect of the surface properties and pore structure of the post-treated CNT films on Li-S battery performance. Post-treatments, i.e., acid treatment, unzip process and cetyltrimethylammonium bromide (CTAB) treatment, effectively modified the surface properties and pore structure of the CNT film. The modified pore structure impacted the ability of the CNT films to accommodate the catholyte, resulting in an increase in initial discharge capacity.

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