1T-MoS2/carbon nanofiber composite as an interlayer fabricated by an in situ electrochemical fabrication method for lithium-sulfur batteries
- Authors
- Moon, Sang-Hyun; Kim, Min-Cheol; Choi, Jin-Hyeok; Kim, Yo-Seob; Kim, Hyeona; Park, Kyung-Won
- Issue Date
- 15-Mar-2021
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- MoS2/carbon nanofiber; 1T-MoS2; In situ phase transition; Lithium sulfur batteries; Interlayer
- Citation
- JOURNAL OF ALLOYS AND COMPOUNDS, v.857
- Journal Title
- JOURNAL OF ALLOYS AND COMPOUNDS
- Volume
- 857
- URI
- http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/40338
- DOI
- 10.1016/j.jallcom.2020.158236
- ISSN
- 0925-8388
- Abstract
- Lithium-sulfur (Li-S) batteries are electrochemical energy devices that can store electrical energy in solid-state sulfur as a cathode. However, despite their high capacity and energy density, there are key issues for commercialization of Li-S batteries that need to be solved, such as shuttle effect to be solved. In this study, for high-rate performance Li-S batteries, we fabricated an interlayer consisting of molybdenum disulfide (MoS2) and carbon nanofiber (CNF) (MoS2/CNF). The in situ phase transition of 2H-MoS2 to 1T-MoS2 in the MoS2/CNF was electrochemically induced. The 1T-MoS2/CNF interlayer structure was found to effectively suppress the shuttle effect. The superior rate performance of the Li-S cell with 1T-MoS2/CNF was found to result from the interlayer structures acting as an upper current collector and a reservoir for Li-polysulfides. (C) 2020 Elsevier B.V. All rights reserved.
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Collections - College of Engineering > Department of Chemical Engineering > 1. Journal Articles
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