Lee, Jeongyeon Choi, Wonchang 2024-01-20T07:33:30Z 2024-01-20T07:33:30Z 2021-09-05 2015-03 0013-4651 https://pubs.kist.re.kr/handle/201004/125730 Sulfur powder was coated with poly(3,4-ethylenedioxythiophene)-polystyrenesulfonie acid (PEDOT:PSS) using a wet mixing process in water. The modified sulfur material was investigated for use as a cathode in lithium-sulfur (Li-S) batteries. The surface modification with the conducting polymer was identified with Fourier transform infrared (FTIR) spectra, scanning electron microscopy (SEM), and high-resolution transmission electron microscopy (HR-TEM) analyses. Electrochemical evaluation revealed that surface modification with PEDOT:PSS leads to increases in initial capacity and improvements in the rate capability and cyclability of sulfur electrodes. Electrochemical impedance spectroscopy (EIS) measurements certified a decreased resistance of the PEDOT:PSS-coated sulfur electrode compared to a pure sulfur electrode, indicating that surface modification with a conducting polymer effectively enhanced the electrochemical performance of sulfur electrodes in Li-S batteries. (C) The Author(s) 2015. Published by ECS. All rights reserved. English ELECTROCHEMICAL SOC INC LI-S BATTERIES PERFORMANCE COMPOSITE GRAPHENE Surface Modification of Sulfur Cathodes with PEDOT:PSS Conducting Polymer in Lithium-Sulfur Batteries Article 10.1149/2.0651506jes 1 JOURNAL OF THE ELECTROCHEMICAL SOCIETY, v.162, no.6, pp.A935 - A939 JOURNAL OF THE ELECTROCHEMICAL SOCIETY 162 6 A935 A939 scie scopus 000353009300022 2-s2.0-84928396647 Electrochemistry Materials Science, Coatings & Films Electrochemistry Materials Science Article LI-S BATTERIES PERFORMANCE COMPOSITE GRAPHENE Sulfur Lithim-sulfur batteries