Song, Jongchan Noh, Hyungjun Lee, Jinhong Nah, In-Wook Cho, Won-Il Kim, Hee-Tak 2024-01-20T03:01:23Z 2024-01-20T03:01:23Z 2021-09-04 2016-11-15 0378-7753 https://pubs.kist.re.kr/handle/201004/123435 Polysulfide (PS) shuttle, which is one of the critical problems that need to be addressed for realizing lithium sulfur batteries, can be suppressed by confining PSs within microporous or mesoporous templates. However, PS dissolution through the external opening of the templates has to be further prevented. In this work, a poly (3,4-ethylenedioxythiophene) (PEDOT) layer is formed in situ on the CMK-3/S cathode by inducing the electro-oxidative polymerization of the EDOT monomer included in electrolytes during pre-charging. The PEDOT layer covering the external cathode surface functions as a PS blocking layer, which suppresses the PS shuttle and, thus, improves the cycling stability. The spectroscopic analysis indicates that the PEDOT layer reduces the decomposition of the electrolyte by preventing any reaction between the active PS species and electrolytes. Therefore, the in situ formation of the PS blocking layer from the electrolyte additive provides a simple and effective method to improve the cycling stability of lithium sulfur batteries. (C) 2016 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE BV LI-S BATTERIES RATE CAPABILITY CAPACITY SHELL ELECTROLYTES COMPOSITES ADDITIVES In situ coating of Poly(3,4-ethylenedioxythiophene) on sulfur cathode for high performance lithium-sulfur batteries Article 10.1016/j.jpowsour.2016.09.092 1 JOURNAL OF POWER SOURCES, v.332, pp.72 - 78 JOURNAL OF POWER SOURCES 332 72 78 scie scopus 000386643000010 2-s2.0-84988701287 Chemistry, Physical Electrochemistry Energy & Fuels Materials Science, Multidisciplinary Chemistry Electrochemistry Energy & Fuels Materials Science Article LI-S BATTERIES RATE CAPABILITY CAPACITY SHELL ELECTROLYTES COMPOSITES ADDITIVES Lithium-sulfur battery PEDOT (Poly(3,4-ethylenedioxythiophene)) Oxidative polymerization Electrolyte additive Protection layer