Why PEO as a binder or polymer coating increases capacity in the Li–S system
- 1 January 2013
- journal article
- Published by Royal Society of Chemistry (RSC) in Chemical Communications
- Vol. 49 (76), 8531-8533
- https://doi.org/10.1039/c3cc44772c
Abstract
PEO, used either as a binder or a polymer coating, and PEGDME, used as an electrolyte additive, are shown to increase the reversible capacity of Li–S cells. The effect, in all three cases, is the same: an improved solvent system for the electrochemistry of sulfur species and suppression of cathode passivation on discharge. This constitutes a novel interpretation of the mechanistic behaviour of polyethers in the Li–S system, and sheds new light upon several previous studies.Keywords
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