Journal
JOURNAL OF POWER SOURCES
Volume 205, Issue -, Pages 420-425Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2011.12.061
Keywords
Lithium-sulfur batteries; Sulfur electrode; Fabrication process; Binder materials; Economically viable electrodes
Funding
- German Ministry for Science and Education (BMBF)
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The specific capacity and cycling stability of lithium sulfur batteries have been investigated with respect to the chemical composition and fabrication process of the sulfur electrode. Three different kinds of electrode compositions (containing Nafion, polyacrylonitrile/carboxymethylcellulose, and Teflon, respectively, as binder materials) have been tested. For the electrodes containing Nafion as the binder material, an additional Nafion coating has been deposited on top of the electrodes to enhance the sulfur retention and to suppress the polysulfide shuttle. Both SEM images before cycling and post mortem are presented in order to shed light on the influence of the composition of the electrode on its electrochemical performance. Good cycling performance can be attained based on relatively simple and therefore cost-effective electrode setups and production methods. (C) 2012 Elsevier B.V. All rights reserved.
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