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Effect of solvents on the electrochemical properties of binder-free sulfur cathode films in lithium-sulfur batteries
- Authors
- Ryu, Ho-Suk; Kim, Byeong-Wook; Park, Jin-Woo; Nam, Tae-Hyun; Cho, Kwon-Koo; Kim, Ki-Won; Ahn, Jou-Hyeon; Ahn, Hyo-Jun
- Issue Date
- Oct-2016
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- Electrochemical measurements; Electrochemical properties; Energy storage; Mechanical properties; Surface properties
- Citation
- MATERIALS RESEARCH BULLETIN, v.82, pp 102 - 108
- Pages
- 7
- Indexed
- SCI
SCIE
SCOPUS
- Journal Title
- MATERIALS RESEARCH BULLETIN
- Volume
- 82
- Start Page
- 102
- End Page
- 108
- ISSN
- 0025-5408
1873-4227
- Abstract
- The effects of solvents on the preparation of sulfur cathodes were investigated by fabricating binder-free sulfur electrode 'films using three different solvents: 1-methyl-2-pyrrolidinone (NMP), acetonitrile, and deionized water. These solvents are commonly employed to dissolve binders used to prepare sulfur cathodes for lithium sulfur batteries. The sulfur electrode fabricated with NMP had a higher discharge capacity and longer cycle life than the ones fabricated with acetonitrile and deionized water. Better adhesion between the current collector and the sulfur electrode accounted for the improved capacity and cycle life of the battery. In addition, the stability of the electrode in the electrolyte was a result of the solubility of sulfur in the solvent. We thus concluded that the solvents used in the fabrication of sulfur electrodes had a positive influence on the electrochemical properties of Li-S batteries. (C) 2016 Elsevier Ltd. All rights reserved.
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