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Received July 20, 2023
Accepted September 14, 2023
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Enhancing High-Rate Charge–Discharge Performance of Lithium–Sulfur Batteries Using Carbon Black Interlayer
Jae Bin Lee
Gyeonguk Min
Won-Gwang Lim
Hyunchul Kang
Kyuchul Shin
Songhun Yoon†
Jinwoo Lee†
Jin Joo†
Department of Hydrogen & Renewable Energy , Kyungpook National University 1Department of Chemical and Biomolecular Engineering , Korea Advanced Institute of Science and Technology (KAIST) 2School of Integrative Engineering , Chung-Ang University 3Department of Applied Chemistry , Kyungpook National University
yoonshun@cau.ac.kr, jwlee1@kaist.ac.kr, joojin@knu.ac.kr
Korean Journal of Chemical Engineering, April 2024, 41(4), 1239-1248(10), https://doi.org/10.1007/s11814-024-00057-w
Abstract
In this study, the cathode was coated with Super P, a low-cost conductive carbon, to simplify the process and reduce cost.
Electrodes with diff erent sulfur ratios were assembled into cells to characterize their CV curves and impedances. The S0.6-
sp cell shows a high discharge capacity of 600 mAh g −1 at 2 C and 967 mAh g −1 at 0.5 C. These values are 10% and 25%
higher, respectively, compared to S0.53 cells with the same carbon-to-sulfur ratio. Afterward, the S0.6-sp cell was disassembled
to observe the suppression of the shuttle eff ect by confi rming the appearance of the separator. In addition, through
SEM images, electrode structure collapse caused by the Li 2 S/Li 2 S 2 layer was insignifi cant.
